Quater-, quinque-, and sexithiophene organogelators: Structure, thermochromism, and heating-free sol-gel phase-control triggered by redox-stimuli

Shin Ichiro Kawano, Norifumi Fujita, Seiji Shinkai

研究成果: Contribution to conferencePaper査読

抄録

A series of quater-, quinque-, and sexithiophene derivatives bearing two cholesteryl groups at the exposition, which are abbreviated as 4T-(chol) 2, 5T-(chol)2, and 6T-(chol)2, respectively, were synthesized. It was found that these oligothiophene derivatives work as excellent organogelators for various organic fluids and show the unique thermochromic behaviors through the sol-gel phase-transition. From investigations on the organogels by their absorption, CD spectroscopic analyses, and TEM, SEM, and AFM, these gelators self-assemble in the one-dimensional manner in the organogels, where the π-block moieties of the oligothiophenes are stacked in H-aggregate fashion. In addition, a sol-gel phase-transition of the 6T-(chol)2 gel was implemented by addition of oxidizing and reducing reagent such FeCl3, ascorbic acid, respectively. The functionality of the organogels makes them promising candidates for opto- and electronic soft materials.

本文言語英語
ページ数1
出版ステータス出版済み - 12 1 2005
イベント54th SPSJ Annual Meeting 2005 - Yokohama, 日本
継続期間: 5 25 20055 27 2005

その他

その他54th SPSJ Annual Meeting 2005
国/地域日本
CityYokohama
Period5/25/055/27/05

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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