NEWS
New Members
Four students who will join our lab next April stopped by today to say hello.
We have released a preprint describing our latest work
Densely packed and well-aligned liquid-crystalline scaffolds drive controllable axial crystal strain | Organic Chemistry | ChemRxiv | Cambridge Open Engage
https://chemrxiv.org/engage/chemrxiv/article-details/6921726cef936fb4a208f6f7
Christmas Party 2025
Following last year’s tradition, we held a Christmas party.
We were gifted oysters from a student’s family home Hokkaido and enjoyed them together.
RESEARCH
Our group develops stimuli-responsive molecular-based materials, such as crystals, liquid crystals, organogels and etc. We try to elucidate so far unknown responses of such materials and provide novel functionality of molecules.
Molecular-based materials exhibiting stimuli-responsivity
Molecular crystals or liquid crystals often show properties and functionality different from its individual molecule itself. This is caused by the neighboring molecules within the assembled materials which are connected through various intermolecular interactions. This indicates that the molecular-based materials can show properties/functionalities based on assembled states. Upon applying external stimulations to such materials, such as temperature change, photoirradiation and mechanical stimulations, the assembled states/molecular arrangements can change. As a result, these molecular-based materials exhibit various responses, i.e., property changes and mechanical movement.
Bridging the gap between macroscopic externals stimulation and microscopic molecular arrangement
We have reported that the molecular-based materials exhibiting emission color changes, electronic conductivity changes, and mechanical movements upon applying mechanical stimulation. These stimuli-responses are caused by the “macroscopic” mechanical force by means of a spatula or a pestle/mortar, which leading to changes in “macroscopic” molecular arrangements and patterns of intermolecular interactions. Our group tries to elucidate precise molecular arrangements within the crystals/liquid crystals to identify the effect of external stimulation, bridging the gap between macro- and microscopic information.
Publications
2025
S. Ito, S. Nagai, M. Ikeya, T. Mashimo, T. Seki, H. Ito, Y. Sagara, T. Mutai, Y. Ooyama, K. Nakano,
J. Mater. Chem. C, 2025,
DOI: 10.1039/D5TC03324A.
T. Seki, M. Ikeda,
Cryst. Growth Des., 2025, 25, 10268–10272
DOI: 10.1021/acs.cgd.5c01174.
T. Seki, T. Okada, M. Ikeda, K. Yamamoto, S. Hayashi, Y. Kishida, H. Uekusa,
J. Am. Chem. Soc., 2025, 147, 27431–27437
DOI: 10.1021/jacs.5c04563.
T. Seki, A. Yano,
Eur. J. Inorg. Chem., 2025, 28, e202400793
DOI: 10.1002/ejic.202400793.
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