Accession Number : ADA019210

Title :   A Review of Dye Sensitization of Photographic Image Formation.

Descriptive Note : Interim rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF CHEMISTRY AND PHYSICS LAB

Personal Author(s) : Fleischauer,Paul D.

Report Date : 01 DEC 1975

Pagination or Media Count : 48

Abstract : Photosensitization is becoming increasingly more popular with solution chemists because of the recent interest in molecular energy levels and the reactivities of excited states. Sensitization of image formation is one of the oldest known types of sensitization. It involves absorption of actinic light by an adsorbed dye sensitizer and energy (electron) transfer to a solid substrate. Recognized in the nineteenth century, dye sensitization has benefited more recently from advanced physical chemical and electronic analysis techniques. In this report, recent developments in dye sensitization are summarized with emphasis on sensitizer structures, dye-substrate energy levels, and mechanisms of sensitization. The intent here is to compile information for use in the interpretation of sensitization phenomena on semiconductor surfaces, specifically recent experimental results on image formation on TiO2 thin films.

Descriptors :   *Photographic images, *Sensitizing, *Dyes, Image processing, Reactivities, Molecular energy levels, Excitation, Absorption, Photosensitivity, Absorption spectra, Semiconductors, Silver halides, Chemical properties, Energy transfer, Electron transfer, Thin films, Titanium oxides, Supersensitivity, Desensitizing, Adsorption, Structures, Reviews

Subject Categories : Polymer Chemistry
      Printing and Graphic Arts

Distribution Statement : APPROVED FOR PUBLIC RELEASE