Title

Two-Photon Photochromism Of A Diarylethene Enhanced By Förster Resonance Energy Transfer From Two-Photon Absorbing Fluorenes

Keywords

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

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. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

Publication Date

12-11-2006

Publication Title

ChemPhysChem

Volume

7

Issue

12

Number of Pages

2514-2519

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/cphc.200600553

Socpus ID

33845782530 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33845782530

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