Failure of Energy Transfer between Identical Aromatic Molecules on Excitation at the Long Wave Edge of the Absorption Spectrum | Zendy

Gregorio Weber | Zendy; Meir Shinitzky | Zendy

Open Access

Failure of Energy Transfer between Identical Aromatic Molecules on Excitation at the Long Wave Edge of the Absorption Spectrum

Author(s) -

Gregorio Weber,

Meir Shinitzky

Publication year - 1970

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.65.4.823

Subject(s) - excitation , absorption (acoustics) , fluorescence , molecule , chemistry , photochemistry , micelle , absorption spectroscopy , absorption edge , energy transfer , analytical chemistry (journal) , molecular physics , chemical physics , atomic physics , materials science , optics , physics , band gap , organic chemistry , optoelectronics , quantum mechanics , aqueous solution , composite material

Electronic energy transfer among identical molecules has been followed by the depolarization of the fluorescence in concentrated solutions as well as in dimers, polymers, and micelle systems. In the many aromatic fluorophores examined, unlike a few nonaromatic ones, transfer is much decreased or altogether undetectable on excitation at the red edge of the absorption spectrum. The phenomenon is not due to the transfer taking place during a small fraction of the total fluorescence lifetime, nor is it explainable by a decrease in overlap of absorption and emission upon edge excitation.

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