Premium
ROFRET: A Molecular‐Scale Fluorescent Probe Displaying Viscosity‐Enhanced Intramolecular Förster Energy Transfer
Author(s) -
Bai Dan,
Benniston Andrew C.,
Whittle Victoria L.,
Lemmetyinen Helge,
Tkachenko Nikolai V.
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402320
Subject(s) - bodipy , förster resonance energy transfer , intramolecular force , fluorescence , photochemistry , time resolved spectroscopy , chemistry , solvent , viscosity , spectroscopy , fluorescence spectroscopy , chemical physics , materials science , organic chemistry , optics , quantum mechanics , composite material , physics
The fluorescent probe ROFRET contains a Bodipy molecular rotor connected through a short triazole‐based spacer to a fully alkylated Bodipy. Förster resonance energy transfer takes place from the rotor to the other Bodipy, and is enhanced to a limiting value as the viscosity of the solvent increases. Time‐resolved spectroscopy and steady‐state studies are consistent with both forward and reverse energy transfer, and delayed fluorescence.