Studies of Supersensitization by Tetraazaindenols Relative Quantum Yield of Spectral Sensitization and Immersion Treatment

Studies have been made on the mechanism of the sensitizing effect (supersensitization) of tetraazaindenols for spectrally sensitized and sulfur-sensitized AgBr emulsions. The sensitization by a tetraazaindenol was observable only when the tetraazaindenol was introduced into emulsions before their ex...

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Bibliographic Details
Published inJournal of The Society of Photographic Science and Technology of Japan Vol. 41; no. 5; pp. 325 - 332
Main Authors TANI, Tadaaki, URABE, Hitoshi
Format Journal Article
LanguageJapanese
Published THE SOCIETY OF PHOTOGRAPHY AND IMAGING OF JAPAN 25.10.1978
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Summary:Studies have been made on the mechanism of the sensitizing effect (supersensitization) of tetraazaindenols for spectrally sensitized and sulfur-sensitized AgBr emulsions. The sensitization by a tetraazaindenol was observable only when the tetraazaindenol was introduced into emulsions before their exposure to light by immersion treatment. The degree of the increase in the relative quantum yield of spectral sensitization was much smaller than that of the increase in sensitivity caused by the tetraazaindenol. These results seem to indicate that tetraazaindenols depress the recombination process introduced by sensitizing dyes in the sulfur-sesitized emulsions.
ISSN:0369-5662
1884-5932
DOI:10.11454/photogrst1964.41.325