Heterocyclic nonlinear optical chromophores composed of phenothiazine or carbazole donor and 2-cyanomethylene-3-cyano-4,5,5-trimethyl-2,5-dihydrofuran acceptor

Min Ju Cho, Ja Youn Kim, Jae Hong Kim, Seung Hwan Lee, Larry R. Dalton, Dong Hoon Choi

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

We prepared the new nonlinear optical chromophores that show fairly high microscopic nonlinearity through intramolecular charge transfer. Phenothiazine and carbazole units played an important role to contribute high electron donability and connect the resonance pathway via conjugative effect in the cyclized ring beside the aromatic ring. Theoretical calculation, electrochemical analysis, and absorption spectroscopic study gave us useful information about the energy states and microscopic nonlinearities of two serial chromophores. We compared the microscopic nonlinearities of four chromophores with the conjugation length and electron donability in the push-pull type NLO chromophores. The effect of gradient donability and lengthening the conjugation were investigated on the electronic state and microscopic nonlinearity.

Original languageEnglish
Pages (from-to)77-84
Number of pages8
JournalBulletin of the Korean Chemical Society
Volume26
Issue number1
DOIs
Publication statusPublished - 2005 Jan 20

Keywords

  • Carbazole
  • Gradient donor moiety
  • Nonlinear optical chromophore
  • Phenothiazine

ASJC Scopus subject areas

  • Chemistry(all)

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