The influence of solvent dielectric constant on the photophysical properties of cyano and alkoxy substituted phenylene vinylene model compounds

MM Souza, G Rumbles, Ifor David William Samuel, SC Moratti, AB Holmes

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We report time-resolved and steady-state photoluminescence studies of three substituted phenylene vinylene model compounds in solvents of different dielectric constant. We note that the compound containing both the alkoxy and cyano substitution exhibits a drop in the quantum yield relative to the monosubstituted alkoxy or alkyl compounds. In addition, the emission spectrum loses structure and shifts: to the red in high dielectric constant solvent. Estimates of the non-radiative lifetime of the emitting species in this model compound are markedly longer and we interpret this as an indication that the emitting state has a high degree of charge-transfer character.

Original languageEnglish
Pages (from-to)631
Number of pages631
JournalSynthetic Metals
Volume101
Publication statusPublished - May 1999

Keywords

  • photoluminescence
  • UV-Vis absorption
  • poly (phenylene vinylene) and derivatives

Fingerprint

Dive into the research topics of 'The influence of solvent dielectric constant on the photophysical properties of cyano and alkoxy substituted phenylene vinylene model compounds'. Together they form a unique fingerprint.

Cite this