Highly fluorescent columnar liquid crystals with elliptical molecular shape: Oblique molecular stacking and excited-state intramolecular proton-transfer fluorescence

Jangwon Seo, Sehoon Kim, Se Hoon Gihm, Chong Rae Park, Soo Young Park

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

We have synthesized a novel class of excited-state intramolecular proton transfer-active molecule (DOXG) forming columnar liquid crystals with enhanced fluorescence emission. The intramolecularly H-bonded core of DOXG produced columnar hexagonal and rectangular phases during cooling as a result of strong core-to-core interactions. In its mesophase, DOXG produced tilted stacking (J-type) in the inner column due to the elliptical molecular shape, bringing about a strong (quantum yield of 34%) and large Stokes' shifted (∼173 nm) fluorescence emission.

Original languageEnglish
Pages (from-to)5052-5057
Number of pages6
JournalJournal of Materials Chemistry
Volume17
Issue number48
DOIs
Publication statusPublished - 2007
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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