Designing lower critical solution temperature behavior into a discotic small molecule

Gary J. Richards, Jan Labuta, Jonathan P. Hill, Toshiyuki Mori, Katsuhiko Ariga

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Design and analysis of amphiphilic small molecules exhibiting lower critical solution temperature (LCST) behavior is reported. 2,3,6,7,10,11- Hexakis[2-(N,N-dialkylamino)ethoxy] triphenylenes containing hydrophilic groups attached at their discotic core were prepared, and the LCST behavior of their solutions was studied using fluorescence spectrophotometry and 1H NMR spectroscopy. 1H NMR spin-lattice relaxation times were used to assess the rotational mobility of molecules below and above the clouding point. The impact on the LCST of supramolecular π-π stacking forces introduced by the triphenylene (TP) core was studied. The operation of the LCST phenomenon was found not to depend significantly on stacking of TP moieties. This process in small molecular species offers several advantages over the polymer-originated phenomenon. For instance, enabling an analogue of the LCST transition in dye molecules might allow the design of novel optical devices by permitting previously unavailable specific aggregated states.

本文言語English
ページ(範囲)1336-1340
ページ数5
ジャーナルJournal of Physical Chemistry Letters
1
9
DOI
出版ステータスPublished - 2010 5 6
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 物理化学および理論化学

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