Papers
Papers
2022
81. Mechanical deformation and multiple thermal restoration of organic crystals: reversible multi-stage shape-changing effect with luminescence-color changes,
C. Feng, T. Seki, S. Sakamoto, T. Sasaki, S. Takamizawa, H. Ito,
Chem. Sci., 2022, in press
DOI: 10.1039/D2SC03414J.
C. Feng, T. Seki, S. Sakamoto, T. Sasaki, S. Takamizawa, H. Ito,
Chem. Sci., 2022, in press
DOI: 10.1039/D2SC03414J.
Shape-memory materials can be mechanically deformed and subsequently reverse the deformation upon changing the temperature. Shape-memory materials have attracted considerable attention for basic research and industrial applications, and polymer and alloy shape-memory materials have been well studied; however, it is formidably challenging to develop functional shape-memory materials, such as materials with multi-stage and anisotropic shape changes and shape changes accompanied by changes in color and light emission. Here, we found a reversible multi-stage shape-changing effect after mechanical deformation in a molecular crystal induced by multi-step thermal phase transitions with reversible shape changes and luminescence-color changes. Using single-crystal structure and thermal analyses as well as mechanical property measurements, we found that the reversible multi-stage shape-changing effect was achieved by a combination of a twinning deformation and multi-step thermal phase transitions. The changes in the crystal shape and luminescence suggest novel strategies for imparting known shape-memory materials with additional functionalities.
2021
80. Functional Flexible Molecular Crystals: Intrinsic and Mechanoresponsive Properties,
T. Seki, N. Hoshino, Y. Suzuki, S. Hayashi,
CrystEngComm, 2021, 23, 5686–5696
DOI: 10.1039/D1CE00388G.
T. Seki, N. Hoshino, Y. Suzuki, S. Hayashi,
CrystEngComm, 2021, 23, 5686–5696
DOI: 10.1039/D1CE00388G.
79. (9-Isocyanoanthracene)gold(I) Complexes Exhibiting Two Modes of Crystal Jumps by Different Structure Change Mechanisms,
K. Kato, T. Seki, H. Ito,
Inorg. Chem, 2021, 60, 10849–10856
DOI: 10.1021/acs.inorgchem.1c00881.
K. Kato, T. Seki, H. Ito,
Inorg. Chem, 2021, 60, 10849–10856
DOI: 10.1021/acs.inorgchem.1c00881.
78. Synthesis and Optical Properties of C,N-Swapped Boranils Derived from Potassium Acyltrifluoroborates,
S. Matsuura, J. Taguchi, T. Seki, H. Ito,
Bull. Chem. Soc. Jpn., 2021, 94, 1547–1552
DOI: 10.1246/bcsj.20210024.
S. Matsuura, J. Taguchi, T. Seki, H. Ito,
Bull. Chem. Soc. Jpn., 2021, 94, 1547–1552
DOI: 10.1246/bcsj.20210024.
2020
77. Thermosalience in Macrocycle-Based Soft Crystals via Anisotropic Deformation of Disilanyl Architecture,
K. Omoto, T. Nakae, M. Nishio, Y. Yamanoi, H. Kasai, E. Nishibori, T. Mashimo, T. Seki, H. Ito, K. Nakamura, N. Kobayashi, N. Nakayama, H. Goto, H. Nishihara,
J. Am. Chem. Soc., 2020, 142, 12651–12657
DOI: 10.1021/jacs.0c03643.
K. Omoto, T. Nakae, M. Nishio, Y. Yamanoi, H. Kasai, E. Nishibori, T. Mashimo, T. Seki, H. Ito, K. Nakamura, N. Kobayashi, N. Nakayama, H. Goto, H. Nishihara,
J. Am. Chem. Soc., 2020, 142, 12651–12657
DOI: 10.1021/jacs.0c03643.
Abstract
76. Hydrogen Bond-Directed Supramolecular Polymorphism Leading to Soft and Hard Molecular Ordering,
T. Aizawa, K. Aratsu, S. Datta, T. Mashimo, T. Seki, T. Kajitani, F. Sillye, S. Yagai,
Chem. Commun., 2020, 56, 4280–4283
DOI: 10.1039/D0CC01636E.
T. Aizawa, K. Aratsu, S. Datta, T. Mashimo, T. Seki, T. Kajitani, F. Sillye, S. Yagai,
Chem. Commun., 2020, 56, 4280–4283
DOI: 10.1039/D0CC01636E.
Abstract
75. Photoluminescent Ferroelastic Molecular Crystals,
T. Seki, C. Feng, K. Kashiyama, S. Sakamoto, Y. Takasaki, T. Sasaki, S. Takamizawa, H. Ito,
Angew. Chem., Int. Ed., 2020, 59, 8839–8843
DOI: 10.1002/anie.201914610.
T. Seki, C. Feng, K. Kashiyama, S. Sakamoto, Y. Takasaki, T. Sasaki, S. Takamizawa, H. Ito,
Angew. Chem., Int. Ed., 2020, 59, 8839–8843
DOI: 10.1002/anie.201914610.
Ferroelasticity has been reported for several types of molecular crystals, which show mechanical‐stress‐induced shape change under twinning and/or spontaneous formation of strain. Aiming to create materials that exhibit both ferroelasticity and light‐emission characteristics, we discovered the first examples of ferroelastic luminescent organometallic crystals. Crystals of arylgold(I)(N‐heterocyclic carbene)(NHC) complexes bend upon exposure to anisotropic mechanical stress. X‐ray diffraction analyses and stress‐strain measurements on these ferroelastic crystals confirmed typical ferroelastic behavior, mechanical twinning, and the spontaneous build‐up of strain. A comparison with single‐crystal structures of related gold‐NHC complexes that do not show ferroelasticity shed light on the structural origins of the ferroelastic behavior.
74. Mixed crystal formation of two gold isocyanide complexes with various ratios for continuous tuning of photophysical properties,
T. Seki, N. Toyoshima, H. Ito,
Dalton Trans., 2020, 49, 2073–2076
DOI: 10.1039/D0DT00195C.
T. Seki, N. Toyoshima, H. Ito,
Dalton Trans., 2020, 49, 2073–2076
DOI: 10.1039/D0DT00195C.
73. Synthesis and Tunable Optical Properties of C,N-Chelated Borate Luminophores Derived from Potassium Acyltrifluoroborates,
J. Taguchi, S. Matsuura, T. Seki, H. Ito,
Chem. Eur. J., 2020, 26, 2450–2455
DOI: 10.1002/chem.201904983.
J. Taguchi, S. Matsuura, T. Seki, H. Ito,
Chem. Eur. J., 2020, 26, 2450–2455
DOI: 10.1002/chem.201904983.
72. Stacked Nanocarbon Photosensitizer for Efficient Blue Light Excited Eu(III) Emission,
Y. Kitagawa, F. Suzue, T. Nakanishi, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Commun. Chem., 2020, 3, 3
DOI: 10.1038/s42004-019-0251-z.
Y. Kitagawa, F. Suzue, T. Nakanishi, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Commun. Chem., 2020, 3, 3
DOI: 10.1038/s42004-019-0251-z.
Abstract
71. Crystal Jumping of Simple Hydrocarbons: Cooling-Induced Salient Effect of Bis-, Tri-, and Tetraphenylethene through Anisotropic Lattice Dimension Changes without Thermal Phase Transitions,
T. Seki, T. Mashimo, H. Ito,
Chem. Lett., 2020, 49, 174–177
DOI: 10.1246/cl.190768.
T. Seki, T. Mashimo, H. Ito,
Chem. Lett., 2020, 49, 174–177
DOI: 10.1246/cl.190768.
70. Aurophilicity-mediated Construction of Emissive Porous Molecular Crystals as Versatile Hosts for Liquid and Solid Guests,
T. Seki, K. Ida, H. Sato, S. Aono, S. Sakaki, H. Ito,
Chem. Eur. J., 2020, 26, 735–744
DOI: 10.1002/chem.201904597.
T. Seki, K. Ida, H. Sato, S. Aono, S. Sakaki, H. Ito,
Chem. Eur. J., 2020, 26, 735–744
DOI: 10.1002/chem.201904597.
2019
69. Anisotropic Thermal Expansion as the Source of Macroscopic and Molecular Scale Motion in Phosphorescent Amphidynamic Crystals,
M. Jin, S. Yamamoto, T. Seki, H. Ito, M.A. Garcia-Garibay,
Angew. Chem. Int. Ed., 2019, 58, 18003–18010
DOI: 10.1002/anie.201909048.
M. Jin, S. Yamamoto, T. Seki, H. Ito, M.A. Garcia-Garibay,
Angew. Chem. Int. Ed., 2019, 58, 18003–18010
DOI: 10.1002/anie.201909048.
68. The Direct Dimesitylborylation of Benzofuran Derivatives via an Iridium-Catalyzed C–H Activation with Silyldimesitylborane,
R. Shishido, I. Sasaki, T. Seki, T. Ishiyama, H. Ito,
Chem. Eur. J., 2019, 25, 12924 – 12928
DOI: 10.1002/chem.201903776.
R. Shishido, I. Sasaki, T. Seki, T. Ishiyama, H. Ito,
Chem. Eur. J., 2019, 25, 12924 – 12928
DOI: 10.1002/chem.201903776.
67. Near-IR Luminescent YbIII Coordination Polymers Composed of Pyrene Derivatives for Thermostable Oxygen Sensors,
Y. Hasegawa, T. Matsui, Y. Kitagawa, T. Nakanishi, T. Seki, H. Ito, Y. Nakasaka, T. Masuda, K. Fushimi,
Chem. Eur. J., 2019, 25, 12308–12315
DOI: 10.1002/chem.201902583.
Y. Hasegawa, T. Matsui, Y. Kitagawa, T. Nakanishi, T. Seki, H. Ito, Y. Nakasaka, T. Masuda, K. Fushimi,
Chem. Eur. J., 2019, 25, 12308–12315
DOI: 10.1002/chem.201902583.
Abstract
66. Anisotropic strain release in a thermosalient crystal: Correlation between the microscopic orientation of molecular rearrangements and the macroscopic mechanical motion,
T. Seki, T. Mashimo, H. Ito,
Chem. Sci., 2019, 10, 4185–4191
DOI: 10.1039/C8SC05563G.
T. Seki, T. Mashimo, H. Ito,
Chem. Sci., 2019, 10, 4185–4191
DOI: 10.1039/C8SC05563G.
65. Luminescent mechanochromism of gold N-heterocyclic carbene complexes with hypso- and bathochromic spectral shifts,
T. Seki, K. Kashiyama, H. Ito,
Dalton Trans., 2019, 48, 7105–7109
DOI: 10.1039/C9DT00566H.
T. Seki, K. Kashiyama, H. Ito,
Dalton Trans., 2019, 48, 7105–7109
DOI: 10.1039/C9DT00566H.
64. Dependence of Absorption and Emission Spectra on Polymorphs of Gold(I) Isocyanide Complexes: Theoretical Study with QM/MM Approach,
S. Aono, T. Seki, H. Ito, S. Sakaki,
J. Phys. Chem. C., 2019, 123, 4773–4794
DOI: 10.1021/acs.jpcc.8b10602.
S. Aono, T. Seki, H. Ito, S. Sakaki,
J. Phys. Chem. C., 2019, 123, 4773–4794
DOI: 10.1021/acs.jpcc.8b10602.
2018
63. Soft Crystal Force Field for Reproducing the Crystal Structures of Aryl Gold Isocyanide Complexes,
N. Nakayama, S. Obata, Y. Hori, H. Goto, T. Seki, H. Ito,
J. Comput. Chem. Jpn., 2018, 17, 155–157
DOI: 10.2477/jccj.2018-0031.
N. Nakayama, S. Obata, Y. Hori, H. Goto, T. Seki, H. Ito,
J. Comput. Chem. Jpn., 2018, 17, 155–157
DOI: 10.2477/jccj.2018-0031.
62. Structural Manipulation of Triboluminescent Lanthanide Coordination Polymers by Side-Group Alteration,
Y. Hirai, P. P. F. Da Rosa, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Inorg. Chem., 2018, 57, 14653–14659
DOI: 10.1021/acs.inorgchem.8b02367.
Y. Hirai, P. P. F. Da Rosa, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Inorg. Chem., 2018, 57, 14653–14659
DOI: 10.1021/acs.inorgchem.8b02367.
61. Synthesis and Evaluation of 1,3a,6a-Triazapentalene (TAP)-Bonded System,
M. Ito, A. Mera, T. Mashimo, T. Seki, S. Karanjit, E. Ohashi, A. Nakayama, K. Kitamura, T. Hamura, H. Ito, K. Namba,
Chem. Eur. J., 2018, 24, 17727–17733
DOI: 10.1002/chem.201804733.
M. Ito, A. Mera, T. Mashimo, T. Seki, S. Karanjit, E. Ohashi, A. Nakayama, K. Kitamura, T. Hamura, H. Ito, K. Namba,
Chem. Eur. J., 2018, 24, 17727–17733
DOI: 10.1002/chem.201804733.
Abstract
60. A Gold Isocyanide Complex with a Pendant Carboxy Group: Orthogonal Molecular Arrangements and Hypsochromically Shifted Luminescent Mechanochromism,
T. Seki, K. Kobayashi, T. Mashimo, H. Ito,
Chem. Commun., 2018, 54, 13160–13160
DOI: 10.1039/C8CC06490C.
T. Seki, K. Kobayashi, T. Mashimo, H. Ito,
Chem. Commun., 2018, 54, 13160–13160
DOI: 10.1039/C8CC06490C.
Correction: A gold isocyanide complex with a pendant carboxy group: orthogonal molecular arrangements and hypsochromically shifted luminescent mechanochromism
https://pubs.rsc.org/en/content/articlelanding/2018/cc/c8cc90488j
59. Spiral Eu(III) Coordination Polymers with Circularly Polarized Luminescence,
Y. Hasegawa, Y. Miura, Y. Kitagawa, S. Wada, T. Nakanishi, K. Fushimi, T. Seki, H. Ito, T. Iwasa, T. Taketsugu, M. Gon, Y. Chujo, S. Hattori, M. Karasawa, K. Ishii,
Chem. Commun., 2018, 54, 10695–10697
DOI: 10.1039/C8CC05147J.
Y. Hasegawa, Y. Miura, Y. Kitagawa, S. Wada, T. Nakanishi, K. Fushimi, T. Seki, H. Ito, T. Iwasa, T. Taketsugu, M. Gon, Y. Chujo, S. Hattori, M. Karasawa, K. Ishii,
Chem. Commun., 2018, 54, 10695–10697
DOI: 10.1039/C8CC05147J.
58. Light-Regulated Crystal Growth of π-Conjugated Luminophores in an Azobenzene Matrix,
T. Kobayashi, Y. Kitamoto, Y. Hirai, T. Kajitani, T. Seki, S. Yagai,
Commun. Chem., 2018, 1, 58
DOI: 10.1038/s42004-018-0061-8.
T. Kobayashi, Y. Kitamoto, Y. Hirai, T. Kajitani, T. Seki, S. Yagai,
Commun. Chem., 2018, 1, 58
DOI: 10.1038/s42004-018-0061-8.
57. Spin-orbit Coupling Dependent Energy Transfer in Luminescent Nonanuclear Yb-Gd / Yb-Lu Clusters,
S. Omagari, T. Nakanishi, Y. Kitagawa, T. Seki, K. Fushimi, A. Meijerink, Y. Hasegawa,
J. Lumin., 2018, 201, 170–175
DOI: 10.1016/j.jlumin.2018.04.049.
S. Omagari, T. Nakanishi, Y. Kitagawa, T. Seki, K. Fushimi, A. Meijerink, Y. Hasegawa,
J. Lumin., 2018, 201, 170–175
DOI: 10.1016/j.jlumin.2018.04.049.
56. meta-diisocyanide benzene-based aryl gold isocyanide complex exhibiting multiple solid-state molecular arrangements and luminescent mechanochromism,
T. Seki, K. Ida, H. Ito,
Mater. Chem. Front., 2018, 2, 1195–1200
DOI: 10.1039/C8QM00074C.
T. Seki, K. Ida, H. Ito,
Mater. Chem. Front., 2018, 2, 1195–1200
DOI: 10.1039/C8QM00074C.
55. Thermosensitive Luminophores Using Seven-Coordinate TbIII Complexes Based on LLCT Transition,
P. P. F. Da Rosa, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa,
Eur. J. Inorg. Chem., 2018, , 2031–2037
DOI: 10.1002/ejic.201800281.
P. P. F. Da Rosa, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa,
Eur. J. Inorg. Chem., 2018, , 2031–2037
DOI: 10.1002/ejic.201800281.
54. Mechanical-Stimulation-Triggered and Solvent-Vapor-Induced Reverse Single-Crystal-to-Single-Crystal Phase Transitions with Alterations of the Luminescence Color,
M. Jin, T. Sumitani, H. Sato, T. Seki, H. Ito,
J. Am. Chem. Soc., 2018, 140, 2875–2879
DOI: 10.1021/jacs.7b12455.
M. Jin, T. Sumitani, H. Sato, T. Seki, H. Ito,
J. Am. Chem. Soc., 2018, 140, 2875–2879
DOI: 10.1021/jacs.7b12455.
53. A Luminescent Dinuclear EuIII/TbIII Complex with LMCT Band for Single-Molecular Thermosensor,
K. Yanagisawa, Y. Kitagawa, T. Nakanishi, T. Seki, K. Fushimi, H. Ito, Y. Hasegawa,
Chem. Eur. J., 2018, 24, 1956–1961
DOI: 10.1002/chem.201705021.
K. Yanagisawa, Y. Kitagawa, T. Nakanishi, T. Seki, K. Fushimi, H. Ito, Y. Hasegawa,
Chem. Eur. J., 2018, 24, 1956–1961
DOI: 10.1002/chem.201705021.
52. Synthesis and Photophysical Properties of Eu(III) Complexes with Phosphine Oxide Ligands Including Metal Ions,
M. Yamamoto, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa,
Bull. Chem. Soc. Jpn., 2018, 91, 6–11
DOI: 10.1246/bcsj.20170241.
M. Yamamoto, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa,
Bull. Chem. Soc. Jpn., 2018, 91, 6–11
DOI: 10.1246/bcsj.20170241.
51. Origin of Concentration Quenching in Ytterbium Coordination Polymers: Phonon-Assisted Energy Transfer,
S. Omagari, T. Nakanishi, Y. Hirai, Y. Kitagawa, T. Seki, K. Fushimi, H. Ito, Y. Hasegawa,
Eur. J. Inorg. Chem., 2018, , 561–567
DOI: 10.1002/ejic.201701040.
S. Omagari, T. Nakanishi, Y. Hirai, Y. Kitagawa, T. Seki, K. Fushimi, H. Ito, Y. Hasegawa,
Eur. J. Inorg. Chem., 2018, , 561–567
DOI: 10.1002/ejic.201701040.
2017
50. Phosphorescence Control Mediated by Molecular Rotation and Aurophilic Interactions in Amphidynamic Crystals of 1,4-bis[tri-(p-fluorophenyl)phosphane-gold(I)-ethynyl]benzene,
M. Jin, T. J. Chung, T. Seki, H. Ito, M. A. Garcia-Garibay,
J. Am. Chem. Soc., 2017, 139, 18115 –18121
DOI: 10.1021/jacs.7b11316.
M. Jin, T. J. Chung, T. Seki, H. Ito, M. A. Garcia-Garibay,
J. Am. Chem. Soc., 2017, 139, 18115 –18121
DOI: 10.1021/jacs.7b11316.
49. Tris(trimethylsilyl)silyl Boronate Esters: Novel Bulky, Air- and Moisture-Stable Silylboronate Ester Reagents for Boryl Substitution and Silaboration Reactions,
E. Yamamoto, R. Shishido, T. Seki, H. Ito,
Organometallics., 2017, 36, 3019–3022
DOI: 10.1021/acs.organomet.7b00476.
E. Yamamoto, R. Shishido, T. Seki, H. Ito,
Organometallics., 2017, 36, 3019–3022
DOI: 10.1021/acs.organomet.7b00476.
Abstract
48. Enhanced Luminescence of Asymmetrical Seven-Coordinate EuIII Complexes Including LMCT Perturbation,
K. Yanagisawa, Y. Kitagawa, T. Nakanishi, T. Akama, M. Kobayashi, T. Seki, K. Fushimi, H. Ito, T. Taketsugu, Y. Hasegawa,
Eur. J. Inorg. Chem., 2017, 2017, 3843–3848
DOI: 10.1002/ejic.201700815.
K. Yanagisawa, Y. Kitagawa, T. Nakanishi, T. Akama, M. Kobayashi, T. Seki, K. Fushimi, H. Ito, T. Taketsugu, Y. Hasegawa,
Eur. J. Inorg. Chem., 2017, 2017, 3843–3848
DOI: 10.1002/ejic.201700815.
47. Tuning the Lifetime of Transient Phases of Mechanochromic Gold Isocyanide Complexes through Functionalization of the Terminal Moieties of Flexible Side Chains,
T. Seki, K. Kashiyama, S. Yagai, H. Ito,
Chem. Lett., 2017, 46, 1415–1418
DOI: 10.1246/cl.170482.
T. Seki, K. Kashiyama, S. Yagai, H. Ito,
Chem. Lett., 2017, 46, 1415–1418
DOI: 10.1246/cl.170482.
46. Mechano-Responsive Luminescence via Crystal-to-Crystal Phase Transitions between Chiral and Non-Chiral Space Groups,
M. Jin, T. Seki, H. Ito,
J. Am. Chem. Soc., 2017, 139, 7452–7455
DOI: 10.1021/jacs.7b04073.
M. Jin, T. Seki, H. Ito,
J. Am. Chem. Soc., 2017, 139, 7452–7455
DOI: 10.1021/jacs.7b04073.
45. Low-Temperature-Selective Luminescent Mechanochromism of a Thienyl Gold Isocyanide Complex,
T. Seki, K. Kobayashi, H. Ito,
Chem. Commun., 2017, 53, 6700–6703
DOI: 10.1039/C7CC03190D.
T. Seki, K. Kobayashi, H. Ito,
Chem. Commun., 2017, 53, 6700–6703
DOI: 10.1039/C7CC03190D.
44. Luminescent Mechanochromic 9-Anthryl Gold(I) Isocyanide Complex with an Emission Maximum at 900 nm after Mechanical Stimulation,
T. Seki, N. Tokodai, S. Omagari, T. Nakanishi, Y. Hasegawa, T. Iwasa, T. Taketsugu, H. Ito,
J. Am. Chem. Soc., 2017, 139, 6514–6517
DOI: 10.1021/jacs.7b00587.
T. Seki, N. Tokodai, S. Omagari, T. Nakanishi, Y. Hasegawa, T. Iwasa, T. Taketsugu, H. Ito,
J. Am. Chem. Soc., 2017, 139, 6514–6517
DOI: 10.1021/jacs.7b00587.
43. Triboluminescence of Lanthanide Coordination Polymers with Face-to-Face Arranged Substituents,
Y. Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Angew. Chem. Int. Ed., 2017, 56, 7171–7175
DOI: 10.1002/anie.201703638.
Y. Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Angew. Chem. Int. Ed., 2017, 56, 7171–7175
DOI: 10.1002/anie.201703638.
Abstract
42. Effective Photo- and Triboluminescent Europium(III) Coordination Polymers with Rigid Triangular Spacer Ligands,
Y. Hasegawa, S. Tateno, M. Yamamoto, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi,
Chem. Eur. J., 2017, 23, 2666–2672
DOI: 10.1002/chem.201605054.
Y. Hasegawa, S. Tateno, M. Yamamoto, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi,
Chem. Eur. J., 2017, 23, 2666–2672
DOI: 10.1002/chem.201605054.
2016
41. Critical Role of Energy Transfer Between Terbium Ions for Suppression of Back Energy Transfer in Nonanuclear Terbium Clusters,
S. Omagari, T. Nakanishi, Y. Kitagawa, T. Seki, K. Fushimi, H. Ito, A. Meijerink, Y. Hasegawa,
Sci. Rep., 2016, 6, 37008
DOI: 10.1038/srep37008.
S. Omagari, T. Nakanishi, Y. Kitagawa, T. Seki, K. Fushimi, H. Ito, A. Meijerink, Y. Hasegawa,
Sci. Rep., 2016, 6, 37008
DOI: 10.1038/srep37008.
Abstract
40. Introduction of a Biphenyl Moiety for a Solvent Responsive Aryl Gold(I) Isocyanide Complex with Mechanical Reactivation,
T. Seki, M. Jin, H. Ito,
Inorg. Chem., 2016, 55, 12309–12320
DOI: 10.1021/acs.inorgchem.6b02107.
T. Seki, M. Jin, H. Ito,
Inorg. Chem., 2016, 55, 12309–12320
DOI: 10.1021/acs.inorgchem.6b02107.
39. Direct Introduction of a Dimesitylboryl Group Using Base-Mediated Substitution of Aryl Halides with Silyldimesitylborane,
E. Yamamoto, K. Izumi, R. Shishido, T. Seki, N. Tokodai, H. Ito,
Chem. Eur. J., 2016, 22, 17547– 17551
DOI: 10.1002/chem.201604021.
E. Yamamoto, K. Izumi, R. Shishido, T. Seki, N. Tokodai, H. Ito,
Chem. Eur. J., 2016, 22, 17547– 17551
DOI: 10.1002/chem.201604021.
Abstract
38. Luminescent Europium(III) Coordination Zippers Linked with Thiophene-Based Bridges,
Y. Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Angew. Chem., Int. Ed., 2016, 55, 12059–12062
DOI: 10.1002/anie.201606371.
Y. Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, Y. Hasegawa,
Angew. Chem., Int. Ed., 2016, 55, 12059–12062
DOI: 10.1002/anie.201606371.
Abstract
37. Luminescent mechanochromism of a chiral complex: Distinct crystal structure and color changes of racemic and homochiral gold(I) isocyanide complexes with a binaphthyl moiety,
M. Jin, T. Seki, H. Ito,
Chem. Commun., 2016, 52, 8083–8086
DOI: 10.1039/C6CC03541H.
M. Jin, T. Seki, H. Ito,
Chem. Commun., 2016, 52, 8083–8086
DOI: 10.1039/C6CC03541H.
36. A Screening Approach for the Discovery of Mechanochromic Gold(I) Isocyanide Complexes with Crystal-to-Crystal Phase Transitions,
T. Seki, Y. Takamatsu, H. Ito,
J. Am. Chem. Soc., 2016, 138, 6252 –6260
DOI: 10.1021/jacs.6b02409.
T. Seki, Y. Takamatsu, H. Ito,
J. Am. Chem. Soc., 2016, 138, 6252 –6260
DOI: 10.1021/jacs.6b02409.
35. Hyper-stable organo-EuIII luminophore under high temperature for photo-industrial application,
A. Nakajima, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa,
Sci. Rep., 2016,
DOI: 10.1038/srep24458.
A. Nakajima, T. Nakanishi, Y. Kitagawa, T. Seki, H. Ito, K. Fushimi, Y. Hasegawa,
Sci. Rep., 2016,
DOI: 10.1038/srep24458.
Abstract
34. Mechanical Path to a Photogenerated Structure: Ball Milling-Induced Phase Transition of a Gold(I) Complex,
T. Seki, K. Sakurada, M. Muromoto, S. Seki, H. Ito,
Chem. Eur. J., 2016, 18, 7217 –7220
DOI: 10.1039/C5CE02565F.
T. Seki, K. Sakurada, M. Muromoto, S. Seki, H. Ito,
Chem. Eur. J., 2016, 18, 7217 –7220
DOI: 10.1039/C5CE02565F.
33. Molecular-Level Understanding of Structural Changes of Organic Crystals Induced by Macroscopic Mechanical Stimulation,
T. Seki, H. Ito,
Chem. Eur. J., 2016, 22, 234–241
DOI: 10.1002/chem.201504361.
T. Seki, H. Ito,
Chem. Eur. J., 2016, 22, 234–241
DOI: 10.1002/chem.201504361.
32. Detailed Investigation of the Structural, Thermal, and Electronic Properties of Gold Isocyanide Complexes with Mechano-Triggered Single,
T. Seki, K. Sakurada, M. Muromoto, S. Seki, H. Ito,
Chem. Eur. J., 2016, 22, 6, 1968–1978
DOI: 10.1002/chem.201503721.
T. Seki, K. Sakurada, M. Muromoto, S. Seki, H. Ito,
Chem. Eur. J., 2016, 22, 6, 1968–1978
DOI: 10.1002/chem.201503721.
2015
31. Mechanochromic Luminescence Based on Crystal-to-Crystal Transformation Mediated by a Transient Amorphous,
S. Yagai, T. Seki, H. Aonuma, K. Kawabuchi, T. Karatsu, T. Okura, A. Sakon, H. Uekusa, H. Ito,
Chem. Mat., 2015, 28, 234 – 241
DOI: 10.1021/acs.chemmater.5b03932.
S. Yagai, T. Seki, H. Aonuma, K. Kawabuchi, T. Karatsu, T. Okura, A. Sakon, H. Uekusa, H. Ito,
Chem. Mat., 2015, 28, 234 – 241
DOI: 10.1021/acs.chemmater.5b03932.
30. Seven-Coordinate Luminophores: Brilliant Luminescence of Lanthanide Complexes with C3v Geometrical Structures,
K. Yanagisawa, T. Nakanishi, Y. Kitagawa, T. Seki, T. Akama, M. Kobayashi, T. Taketsugu, H. Ito, K. Fushimi, Y. Hasegawa,
Eur. J. Inorg. Chem., 2015, , 4769–4774
DOI: 10.1002/ejic.201500820.
K. Yanagisawa, T. Nakanishi, Y. Kitagawa, T. Seki, T. Akama, M. Kobayashi, T. Taketsugu, H. Ito, K. Fushimi, Y. Hasegawa,
Eur. J. Inorg. Chem., 2015, , 4769–4774
DOI: 10.1002/ejic.201500820.
Abstract
29. Mismatched changes of the photoluminescence and crystalline structure of a mechanochromic gold(I) isocyanide complex,
T. Seki, K. Sakurada, H. Ito,
Chem. Comm., 2015, 51, 13933–13936
DOI: 10.1039/C5CC04609B.
T. Seki, K. Sakurada, H. Ito,
Chem. Comm., 2015, 51, 13933–13936
DOI: 10.1039/C5CC04609B.
28. Enhanced Electric Dipole Transition in Lanthanide Complex with Organometallic Ruthenocene Units,
Y. Hasegawa, N. Sato, Y. Hirai, T. Nakanishi, Y. Kitagawa, A. Kobayashi, M. Kato, T. Seki, H. Ito, K. Fushimi,
J. Phys. Chem. A, 2015, 119, 4825 –4833
DOI: 10.1021/acs.jpca.5b01809.
Y. Hasegawa, N. Sato, Y. Hirai, T. Nakanishi, Y. Kitagawa, A. Kobayashi, M. Kato, T. Seki, H. Ito, K. Fushimi,
J. Phys. Chem. A, 2015, 119, 4825 –4833
DOI: 10.1021/acs.jpca.5b01809.
Abstract
27. Luminescent Coordination Glass: Remarkable Morphological Strategy for Assembled Eu(III) Complexes,
Y. Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, H. Fueno, K. Tanaka, T. Sato, Y. Hasegawa,
Inorg. Chem., 2015, 54, 4364–4370
DOI: 10.1021/acs.inorgchem.5b00145.
Y. Hirai, T. Nakanishi, Y. Kitagawa, K. Fushimi, T. Seki, H. Ito, H. Fueno, K. Tanaka, T. Sato, Y. Hasegawa,
Inorg. Chem., 2015, 54, 4364–4370
DOI: 10.1021/acs.inorgchem.5b00145.
Abstract
26. Effective Photosensitized Energy Transfer of Nonanuclear Terbium Clusters Using Methyl Salicylate Derivatives,
S. Omagari, T. Nakanishi, T. Seki, Y. Kitagawa, Y. Takahata, K. Fushimi, H. Ito, Y. Hasegawa,
J. Phys. Chem. A, 2015, 119, 1943–1947
DOI: 10.1021/jp512892f.
S. Omagari, T. Nakanishi, T. Seki, Y. Kitagawa, Y. Takahata, K. Fushimi, H. Ito, Y. Hasegawa,
J. Phys. Chem. A, 2015, 119, 1943–1947
DOI: 10.1021/jp512892f.
Abstract
25. Interconvertible Multiple Photoluminescence Color of a Gold(I) Isocyanide Complex in the Solid State: Solvent-Induced Blue-Shifted and Mechano-Responsive Red-Shifted Photoluminescence,
T. Seki, T. Ozaki, T. Ohkura, K. Asakura, A. Sakon, H. Uekusa, H. Ito,
Chem. Sci., 2015, 6, 2187–2195
DOI: 10.1039/C4SC03960B.
T. Seki, T. Ozaki, T. Ohkura, K. Asakura, A. Sakon, H. Uekusa, H. Ito,
Chem. Sci., 2015, 6, 2187–2195
DOI: 10.1039/C4SC03960B.
24. Photoinduced Single-Crystal-to-Single-Crystal Phase Transition and Photosalient Effect of a Gold(I) Isocyanide Complex with Shortening Intermolecular Aurophilic Bonds,
T. Seki, K. Sakurada, M. Muromoto, H. Ito,
Chem. Sci., 2015, 6, 1491–1497
DOI: 10.1039/C4SC02676D.
T. Seki, K. Sakurada, M. Muromoto, H. Ito,
Chem. Sci., 2015, 6, 1491–1497
DOI: 10.1039/C4SC02676D.
2014
23. Enhancement of Optical Faraday Effect of Nonanuclear Tb(III) Complexes,
T. Nakanishi, Y. Suzuki, Y. Doi, T. Seki, H. Koizumi, K. Fushimi, K. Fujita, Y. Hinatsu, H. Ito, K. Tanaka, Y. Hasegawa,
inorg. Chem., 2014, 53, 7635–7641
DOI: 10.1021/ic5009363.
T. Nakanishi, Y. Suzuki, Y. Doi, T. Seki, H. Koizumi, K. Fushimi, K. Fujita, Y. Hinatsu, H. Ito, K. Tanaka, Y. Hasegawa,
inorg. Chem., 2014, 53, 7635–7641
DOI: 10.1021/ic5009363.
Abstract
22. Design amphiphilic dipolar π-systems for stimuli-responsive luminescent materials using metastable states,
S. Yagai, S. Okamura, Y. Nakano, M. Yamauchi, K. Kishikawa, T. Karatsu, A. Kitamura, A. Ueno, D. Kuzuhara, H. Yamada, T. Seki, H. Ito,
Nature Communications, 2014, , 4013
DOI: 10.1038/ncomms5013.
S. Yagai, S. Okamura, Y. Nakano, M. Yamauchi, K. Kishikawa, T. Karatsu, A. Kitamura, A. Ueno, D. Kuzuhara, H. Yamada, T. Seki, H. Ito,
Nature Communications, 2014, , 4013
DOI: 10.1038/ncomms5013.
Abstract
21. A Perylene Bisimide Organogelator for Chlorinated Solvents,
X. Lin, M. Hirono, H. Kurata, T. Seki, Y. Maruya, K. Nakayama, S. Yagai,
Asi. J. Org. Chem., 2014, 3, 128 –132
DOI: 10.1002/ajoc.201300252.
X. Lin, M. Hirono, H. Kurata, T. Seki, Y. Maruya, K. Nakayama, S. Yagai,
Asi. J. Org. Chem., 2014, 3, 128 –132
DOI: 10.1002/ajoc.201300252.
Abstract
2013
20. Cholesterol-Aided Construction of Distinct Self-Organized Materials from Luminescent Gold(I)-Isocyanide Complex Exhibiting Mechanochromic Luminescence,
K. Kawaguchi, T. Seki, T. Karatsu, A. Kitamura, H. Ito, S. Yagai,
Chem. Commun., 2013, 19, 11391–11394
DOI: 10.1039/C3CC47162D.
K. Kawaguchi, T. Seki, T. Karatsu, A. Kitamura, H. Ito, S. Yagai,
Chem. Commun., 2013, 19, 11391–11394
DOI: 10.1039/C3CC47162D.
Abstract
19. Controlling Mechano- and Seeding-Triggered Single-Crystal-to-Single-Crystal Phase Transition: Molecular Domino with a Disconnection of Aurophilic Bonds,
T. Seki, K. Sakurada, H. Ito,
Angew. Chem., Int. Ed., 2013, 52, 12828–12832
DOI: 10.1002/anie.201307672.
T. Seki, K. Sakurada, H. Ito,
Angew. Chem., Int. Ed., 2013, 52, 12828–12832
DOI: 10.1002/anie.201307672.
18. Luminescence Color-Tuning through Polymorph Doping: Preparation of a White-Emitting Solid from a Single Gold(I)-socyanide Complex by Simple Precipitation,
T. Seki, S. Kurenuma, H. Ito,
Chem. Eur. J., 2013, 19, 16214–16220
DOI: 10.1002/chem.201303394.
T. Seki, S. Kurenuma, H. Ito,
Chem. Eur. J., 2013, 19, 16214–16220
DOI: 10.1002/chem.201303394.
17. Doping Effect of CBP in Bulk-Heterojunction Photovoltaic Devices Composed of P3HT and Soluble Perylene Bisimid,
Y. Tani, T. Seki, X. Lin, H. Kurata, S. Yagai, K. Nakayama,
Mol. Cryst. Liq. Cryst., 2013, 578, 88–94
DOI: 10.1080/15421406.2013.804393.
Y. Tani, T. Seki, X. Lin, H. Kurata, S. Yagai, K. Nakayama,
Mol. Cryst. Liq. Cryst., 2013, 578, 88–94
DOI: 10.1080/15421406.2013.804393.
16. Effect of Ligand Polarization on Asymmetric Structural Formation for Strongly Luminescent Lanthanide Complexes,
Y. Hasegawa, T. Ohkubo, T. Nakanishi, A. Kobayashi, M. Kato, T. Seki, H. Ito, K. Fushimi,
Eur. J. Inorg. Chem., 2013, , 5911 –5918
DOI: 10.1002/ejic.201301102.
Y. Hasegawa, T. Ohkubo, T. Nakanishi, A. Kobayashi, M. Kato, T. Seki, H. Ito, K. Fushimi,
Eur. J. Inorg. Chem., 2013, , 5911 –5918
DOI: 10.1002/ejic.201301102.
Abstract
15. Mechanical stimulation and solid seeding trigger single-crystal-to-single-crystal molecular domino transformations,
H. Ito, M. Muromoto, S. Kurenuma, S. Ishizaka, N. Kitamura, H. Sato, T. Seki,
Nature Communications, 2013, 4, 2009
DOI: 10.1038/ncomms3009.
H. Ito, M. Muromoto, S. Kurenuma, S. Ishizaka, N. Kitamura, H. Sato, T. Seki,
Nature Communications, 2013, 4, 2009
DOI: 10.1038/ncomms3009.
14. Covalent Modular Approach for Dimension-Controlled Self-Organization of Perylene Bisimide Dyes,
X. Lin, M. Hirono, T. Seki, H. Kurata, T. Karatsu, A. Kitamura, D. Kuzuhara, H. Yamada, T. Ohba, A. Saeki, S. Seki, S. Yagai,
Chem. Eur. J., 2013, 19, 6561–6565
DOI: 10.1002/chem.201300039.
X. Lin, M. Hirono, T. Seki, H. Kurata, T. Karatsu, A. Kitamura, D. Kuzuhara, H. Yamada, T. Ohba, A. Saeki, S. Seki, S. Yagai,
Chem. Eur. J., 2013, 19, 6561–6565
DOI: 10.1002/chem.201300039.
13. Supramolecular Engineering of Perylene Bisimide Assemblies Based on Complementary Multiple Hydrogen Bonding Interactions,
T. Seki, X. Lin, S. Yagai, T. Nakanishi,
Asi. J. Org. Chem., 2013, 2, 708–724
DOI: 10.1002/ajoc.201300025.
T. Seki, X. Lin, S. Yagai, T. Nakanishi,
Asi. J. Org. Chem., 2013, 2, 708–724
DOI: 10.1002/ajoc.201300025.
12. Alkylated-C60 Based Soft Materials: Regulation of Self-Assembly and Optoelectronic Properties by Chain Branching,
H. Li, S. S. Babu, S. T. Turner, D. Neher, M. J. Hollamby, T. Seki, S. Yagai, Y. Deguchi, H. Mohwalda, T. Nakanishi,
J. Mater. Chem. C, 2013, 1, 1943–1951
DOI: 10.1039/c3tc00066d.
H. Li, S. S. Babu, S. T. Turner, D. Neher, M. J. Hollamby, T. Seki, S. Yagai, Y. Deguchi, H. Mohwalda, T. Nakanishi,
J. Mater. Chem. C, 2013, 1, 1943–1951
DOI: 10.1039/c3tc00066d.
2012
11. Supramolecularly Engineered Perylene Bisimides Assemblies Exhibiting Thermal Transition from Columnar to Multilamellar Structures,
S. Yagai, M. Usui, T. Seki, H. Murayama, Y. Kikkawa, S. Uemura, T. Karatsu, A. Kitamura, A. Asano, S. Seki,
J. Am. Chem. Soc., 2012, 134, 7983–7994
DOI: 10.1021/ja302574b.
S. Yagai, M. Usui, T. Seki, H. Murayama, Y. Kikkawa, S. Uemura, T. Karatsu, A. Kitamura, A. Asano, S. Seki,
J. Am. Chem. Soc., 2012, 134, 7983–7994
DOI: 10.1021/ja302574b.
Abstract
10. Perylene Bisimide Organogels Formed by Melamine・Cyanurate/Barbiturate Hydrogen-Bonded Tapes,
T. Seki, S. Yagai, T. Karatsu, A. Kitamura,
Polymer Journal, 2012, 44, 600–606
DOI: 10.1038/pj.2012.22.
T. Seki, S. Yagai, T. Karatsu, A. Kitamura,
Polymer Journal, 2012, 44, 600–606
DOI: 10.1038/pj.2012.22.
Abstract
2011
9. Solution Processable Hydrogen-Bonded Perylene Bisimide Assemblies Organizing into Lamellar Architectures,
T. Seki, Y. Maruya, K. Nakayama, T. Karatsu, A. Kitamura, S. Yagai,
Chem. Commun., 2011, 47, 12447–12449
DOI: 10.1039/c1cc15118e.
T. Seki, Y. Maruya, K. Nakayama, T. Karatsu, A. Kitamura, S. Yagai,
Chem. Commun., 2011, 47, 12447–12449
DOI: 10.1039/c1cc15118e.
8. Multifunctional, Polymorphic, Ionic Fullerene Supramolecular Materials: Self-Assembly and Thermotropic Properties,
H. Li, M. J. Hollamby, T. Seki, S. Yagai, H. Mohwald, T. Nakanishi,
Langmuir, 2011, 27, 7493–7501
DOI: 10.1021/la2015176.
H. Li, M. J. Hollamby, T. Seki, S. Yagai, H. Mohwald, T. Nakanishi,
Langmuir, 2011, 27, 7493–7501
DOI: 10.1021/la2015176.
Abstract
7. Rational Construction of Perylene Bisimide Columnar Superstructures with Biased Helical Sense,
T. Seki, A. Asano, S. Seki, Y. Kikkawa, H. Murayama, T. Karatsu, A. Kitamura, S. Yagai,
Chem. Eur. J., 2011, 17, 3598–3608
DOI: 10.1002/chem.201003540.
T. Seki, A. Asano, S. Seki, Y. Kikkawa, H. Murayama, T. Karatsu, A. Kitamura, S. Yagai,
Chem. Eur. J., 2011, 17, 3598–3608
DOI: 10.1002/chem.201003540.
2010
6. Structural and Electronic Properties of Extremely Long Perylene Bisimide Nanofibers Formed through a Stoichiometrically Mismatched, Hydrogen-Bonded Complexation,
S. Yagai, T. Seki, H. Murayama, Y. Wakikawa, T. Ikoma, T. Karatsu, A. Kitamura, Y. Honsho, S. Seki,
Small, 2010, 6, 2731– 2740
DOI: 10.1002/smll.201001344.
S. Yagai, T. Seki, H. Murayama, Y. Wakikawa, T. Ikoma, T. Karatsu, A. Kitamura, Y. Honsho, S. Seki,
Small, 2010, 6, 2731– 2740
DOI: 10.1002/smll.201001344.
Abstract
5. Assembly of Fullerene-Carbon Nanotubes: Temperature Indicator for Photothermal Conversion,
Y. Shen, A. G. Skirtach, T. Seki, S. Yagai, H. Li, H. Mowald, T. Nakanishi,
J. Am. Chem. Soc., 2010, 132, 8566 –8568
DOI: 10.1021/ja1026024.
Y. Shen, A. G. Skirtach, T. Seki, S. Yagai, H. Li, H. Mowald, T. Nakanishi,
J. Am. Chem. Soc., 2010, 132, 8566 –8568
DOI: 10.1021/ja1026024.
Abstract
2009
4. Unconventional Hydrogen-bond-directed Hierarchical Co-assembly between Perylene Bisimide and Azobenzene-Functionalized Melamine,
S. Yagai, Hamamura, S.H. Wang, V. Stepanenko, T. Seki, K. Unoike, Y. Kikkawa, T. Karatsu, A. Kitamura,
Org. Biomol. Chem., 2009, 7, 3926–3929
DOI: 10.1039/b912809c.
S. Yagai, Hamamura, S.H. Wang, V. Stepanenko, T. Seki, K. Unoike, Y. Kikkawa, T. Karatsu, A. Kitamura,
Org. Biomol. Chem., 2009, 7, 3926–3929
DOI: 10.1039/b912809c.
Abstract
2008
3. Miniaturization of Nanofibers Composed of Melamine-appended Perylene Bisimides and Cyanurates,
T. Seki, S. Yagai, T. Karatsu, A. Kitamura,
Chem. Lett., 2008, 73, 3328 –3335
DOI: 10.1246/cl.2008.764.
T. Seki, S. Yagai, T. Karatsu, A. Kitamura,
Chem. Lett., 2008, 73, 3328 –3335
DOI: 10.1246/cl.2008.764.
Abstract
2. Formation of Supramolecular Polymers and Discrete Dimers of Perylene Bisimide Dyes Based on Melamine-Cyanurates Hydrogen-Bonding Interactions,
T. Seki, S. Yagai, T. Karatsu, A. Kitamura,
J. Org. Chem., 2008, 73, 3328– 3335
DOI: 10.1021/jo800338f.
T. Seki, S. Yagai, T. Karatsu, A. Kitamura,
J. Org. Chem., 2008, 73, 3328– 3335
DOI: 10.1021/jo800338f.
1. Transformation from H- to J-Aggregated Perylene Bisimide Dyes by Complexation with Cyanurates,
S. Yagai, T. Seki, T. Karatsu, A. Kitamura, F. Wurthner,
Angew. Chem. Int.Ed., 2008, 47, 3367–3371
DOI: 10.1002/anie.200705385.
S. Yagai, T. Seki, T. Karatsu, A. Kitamura, F. Wurthner,
Angew. Chem. Int.Ed., 2008, 47, 3367–3371
DOI: 10.1002/anie.200705385.