Effects of J-aggregation on the redox levels of a cyanine dye

Journal of Physical Chemistry

Volumn 100, Issue 43, 1996, Pages 17287-17296

  Lenhard, J R ^a   Hein, B R ^a  

^a EASTMAN KODAK COMPANY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 33748614077     PISSN: 00223654     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp961650l     Document Type: Article

References (84)

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80. As reported in ref 45a, λ for a J-aggregated anionic dye was found to differ from that of a cationic monomeric dye by a factor of 10. We expect a much smaller difference in λ for a monomer/aggregate pair derived from the same chromophore with the same net charge.
81. q results in only a 40% difference in spectral sensitization efficiency.
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83. Relative quantum efficiencies of spectral sensitization were also measured using standard photographic techniques on coatings prepared using a companion AgBr dispersion containing no iridium dopant. These measurements indicate a quantum efficiency >0.9 for the monomer, whereas the J-aggregate afforded no spectral sensitivity to the silver halide.
84. r of 0.8 was obtained, showing that spectral sensitization of AgBr at this wavelength is feasible for a dye with the appropriate redox levels.