Two-photon photochromism of a diarylethene enhanced by förster resonance energy transfer from two-photon absorbing fluorenes

Kevin D. Belfield, Mykhailo V. Bondar, Claudia C. Corredor, Florencio E. Hernandez, Olga V. Przhonska, Sheng Yao

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Resonance energy transfer from two-photon absorbing fluorene derivatives to the photochromic compound 3,4-bis-(2,4,5-trimethyl-thiophen-3-yl)furan-2,5- dione (PC 1) is investigated in hexane under one- and two-photon excitation. The quenching of the steady-state fluorescence of donor molecules in the presence of the diarylethene acceptor is used to study the nature of resonance energy transfer. The Förster distances and critical acceptor concentrations are determined for nonbound donor-acceptor pairs in homogeneous molecular ensembles. Quite significantly, up to a two-fold enhancement in the velocity of the photochromic transformation of 1, in the presence of two-photon absorbing fluorene derivatives, is demonstrated.

Original languageEnglish (US)
Pages (from-to)2514-2519
Number of pages6
JournalChemPhysChem
Volume7
Issue number12
DOIs
StatePublished - Dec 11 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

Keywords

  • Diarylethenes
  • FRET (fluorescence resonance energy transfer)
  • Fluorescence
  • Photochromism
  • Two-photon excitation

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