Photoinduced charge separation and photophysical dynamics in polynorbornene chromophore labeled and quencher-labeled block copolymers

Journal of the American Chemical Society

Volumn 118, Issue 18, 1996, Pages 4344-4353

  Watkins, Diana M ^a   Fox, Marye Anne ^a  

^a UNIVERSITY OF TEXAS AT AUSTIN   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

COPOLYMER;

ARTICLE; ELECTRON TRANSPORT; ENERGY TRANSFER; FLUORESCENCE; MOLECULAR DYNAMICS; PHOSPHORESCENCE; PHOTOCHEMISTRY;

EID: 17544380757     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja950941p     Document Type: Article

References (21)

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21. ̇-) = 32 ms). We do not expect an exponential drop-off of lifetime with distance, since these systems go through multiple electron and energy transfers in order to achieve charge separation. Therefore, the rate of back electron transfer drops off to 3% over a distance of 7 Å (assuming a typical β value) once the electron moves by one chromophore away from the interface. Hence, with a longer relay block length between the donor and the acceptor block, charge recombination has a lower probability and. hence, longer-lived charge separation.