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

K. Wostyn*, G. Olbrechts, K. Clays, A. Persoons, A. Watanabe, K. Nogi, X. M. Duan, S. Okada, H. Oikawa, H. Nakanishi, H. Vogel, D. Beljonne, Jean-Luc Bredas

*Corresponding author for this work

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 (US)
Pages (from-to)353-358
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume25
Issue number1-4
StatePublished - Dec 1 2000

Keywords

  • DAST homologues
  • First hyperpolarizability
  • HRS

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

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