Influence of conjugation length on the first hyperpolarizability of fluorescent hemicyanine (DAST) homologues

K. Wostyn, G. Olbrechts, K. Clays, A. Persoons, Akira Watanabe, K. Nogi, X. M. Duan, S. Okada, Hidetoshi Oikawa, H. Nakanishi, H. Vogel, D. Beljonne, J. L. Bredas

Research output: Contribution to journalArticlepeer-review

Abstract

The influence of the conjugation length on the first hyperpolarizability of a series of five fluorescent hemicyanine homologues is studied by femtosecond hyper-Rayleigh scattering. A frequency-resolved detection scheme has been used to suppress the multi-photon fluorescence contributions to the HRS signal. The obtained fluorescence-free first hyperpolarizabilities are compared with theoretical values.

Original languageEnglish
Pages (from-to)353-358
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume25
Issue number1-4
Publication statusPublished - 2000 Dec 1
Externally publishedYes

Keywords

  • DAST homologues
  • First hyperpolarizability
  • HRS

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

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