Fluorescence depolarization by electronic energy transfer in donor–acceptor pairs of like and unlike chromophores

1991 ◽  
Vol 95 (11) ◽  
pp. 8048-8055 ◽  
Author(s):  
M. N. Berberan‐Santos ◽  
B. Valeur
Keyword(s):  
Energy Transfer ◽  
Electronic Energy ◽  
Fluorescence Depolarization ◽  
Electronic Energy Transfer ◽  
Donor Acceptor

A Donor−Acceptor Molecular Dyad Showing Multiple Electronic Energy-Transfer Processes in Crystalline and Amorphous States

2008 ◽  
Vol 130 (23) ◽  
pp. 7174-7175 ◽  
Author(s):  
Andrew C. Benniston ◽  
Graeme Copley ◽  
Anthony Harriman ◽  
Dorota B. Rewinska ◽  
Ross W. Harrington ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Electronic Energy ◽  
Electronic Energy Transfer ◽  
Transfer Processes ◽  
Donor Acceptor ◽  
Amorphous States

Interactions of dyes with wool. Spectral and photochemical studies of fluorescent whitening agents

1977 ◽  
Vol 30 (1) ◽  
pp. 87 ◽  
Author(s):  
IH Leaver
Keyword(s):  
Energy Transfer ◽  
Polymer Films ◽  
Spectral Study ◽  
Emission Spectra ◽  
Electronic Energy ◽  
Fluorescence Excitation ◽  
Fluorescence Depolarization ◽  
Electronic Energy Transfer ◽  
Fluorescent Whitening Agents ◽  
Photochemical Behaviour

A spectral study has been made of the interactions of four types of fluorescent whitening agents with wool. Fluorescence excitation and emission spectra have been measured in single wool fibres, and are compared with the corresponding spectra in solution and in polymer films. The polarity of the environment has a pronounced effect on the fluorescence properties of the whiteners in solution, but generally has little effect in rigid media. The emission spectra in wool are found to be strongly influenced by the concentration of whitener in the fibre. This heterogeneity of the fluorescence is attributed both to aggregation of the whitener and to changes in the polarity of its micro-environment in the fibre. The results of fluorescence depolarization studies indicate that electronic energy transfer between whitener molecules occurs efficiently at the concentrations normally used for whitening wool. Critical transfer distances and concentrations have been determined for the various whiteners, and are compared with the values predicted by Forster's theory of dipole-dipole transfer. The photochemical behaviour of the fluorescent whiteners in wool has been examined, and the effects of oxygen and water on the fading rates are discussed.

On the quantitative molecular analysis of electronic energy transfer within donor–acceptor pairs

2007 ◽  
Vol 9 (16) ◽  
pp. 1941-1951 ◽  
Author(s):  
Mikael Isaksson ◽  
Nils Norlin ◽  
Per-Olof Westlund ◽  
Lennart B.-Å. Johansson
Keyword(s):  
Energy Transfer ◽  
Molecular Analysis ◽  
Electronic Energy ◽  
Electronic Energy Transfer ◽  
Donor Acceptor

scholarly journals Vibrational energy redistribution during donor–acceptor electronic energy transfer: criteria to identify subsets of active normal modes

2020 ◽  
Vol 22 (33) ◽  
pp. 18454-18466 ◽  
Author(s):  
L. Alfonso-Hernandez ◽  
S. Athanasopoulos ◽  
S. Tretiak ◽  
B. Miguel ◽  
A. Bastida ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Vibrational Energy ◽  
Normal Modes ◽  
Electronic Energy ◽  
Energy Redistribution ◽  
Electronic Energy Transfer ◽  
Donor Acceptor

Photoinduced electronic energy transfer in conjugated donor–acceptor systems is naturally accompanied by intramolecular vibrational energy redistributions accepting an excess of electronic energy.

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