Steps to demarcate the effects of chromophore aggregation and planarization in poly(phenyleneethynylene)s. 1. Rotationally interrupted conjugation in the excited states of 1,4-bis(phenylethynyl)benzene

M. Levitus, K. Schmieder, H. Ricks, K. D. Shimizu, U. H.F. Bunz, M. A. Garcia-Garibay

Research output: Contribution to journalArticlepeer-review

322 Scopus citations

Abstract

A series of photophysical measurements and semiempirical calculations were carried out with 1,4-bis(phenylethynyl)benzene in search of evidence on the effects of phenyl group rotation and chromophore aggregation of oligo- and poly(phenyleneethynylene)s. It is suggested that planarization gives rise to relatively modest shifts of ca. 20-30 nm, which preserve the vibronic structure of the monomer and retain a high emission quantum yield. In contrast, it is proposed that aggregation gives rise to larger shifts and loss of vibronic structure.

Original languageEnglish (US)
Pages (from-to)4259-4265
Number of pages7
JournalJournal of the American Chemical Society
Volume123
Issue number18
DOIs
StatePublished - Oct 8 2001
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Fingerprint

Dive into the research topics of 'Steps to demarcate the effects of chromophore aggregation and planarization in poly(phenyleneethynylene)s. 1. Rotationally interrupted conjugation in the excited states of 1,4-bis(phenylethynyl)benzene'. Together they form a unique fingerprint.

Cite this