A Review of Dye Sensitization of Photographic Image Formation.

摘要

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.