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2020 Fiscal Year Final Research Report

Exploration of soft materials exhibiting a macroscopic single-domain structure and new properties

Research Project

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Project/Area Number 17H01034
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanostructural chemistry
Research InstitutionTokyo Institute of Technology

Principal Investigator

Fukushima Takanori  東京工業大学, 科学技術創成研究院, 教授 (70281970)

Co-Investigator(Kenkyū-buntansha) 尾原 幸治  公益財団法人高輝度光科学研究センター, 回折・散乱推進室, 主幹研究員 (00625486)
梶谷 孝  東京工業大学, オープンファシリティセンター, 技術職員 (20469927)
Project Period (FY) 2017-04-01 – 2021-03-31
Keywords分子自己集合 / シングルドメイン / ソフトマター / 液晶 / 高分子材料 / 分子集団運動 / 音波浮遊 / 反応場
Outline of Final Research Achievements

We discovered several unprecedented materials that exhibit new structures, phase behaviors, and collective molecular motions, which can update the existing knowledge for soft materials. A remarkable achievement is the finding of a triphenylene-based chiral liquid crystal (LC), which forms a 3D single-crystal-like structure with a droplet-like shape and can flow without losing the 3D structural regularity. The LC also has provided a new knowledge on the relationship between chirality and collective molecular motion. For the design of a new molecular-assembling field, an acoustic levitator, equipped with a heating device and an X-ray diffraction machine, has been developed, to enable the controlled self-assembly of LCs and polymers into millimeter-sized single-domain structures and observe structural events directly. The acoustic levitator was found to provide a unique field for chemical reactions, in which reactions, different from those occurs without levitation, can be induced.

Free Research Field

構造有機化学、分子集合体化学、有機機能物質化学

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた成果は、低分子から高分子を構成要素とするソフトマターの構造化現象や物理化学に関する、これまでの常識をアップデートする新知見を提供するとともに、実応用上も高機能材料開発にとって重要な、「微子的なドメイン境界を含まず、巨視的スケールで一様な構造を有する材料をいかに構築するか?」という課題解決のための端緒を与える。明確な学術的な意義とともに、応用的観点からも今後、バルク状態の物性ばかりでなく、薄膜や表面・界面などで機能する新しいソフトマター設計の新概念や新合成法に通じる、インパクトある成果が得られたと考えている。

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Published: 2022-01-27  

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