An Investigation Into The Synthesis And Properties Of New Supersensitizers

The synthesis and application properties in ISO800 high-sensitizing emulsion of the tertiary amine were general studied in this thesis. The self-desensitization and supersensitization mechanism of the sensitizing dyes were discussed in the emulsion sensitizing. Comparing with the supersensitizer used in overseas company at present, it is found that the tertiary amines with the structure of benzothiazolyl (senlenazolyl,oxazolyl) have supersensitization effects, and then the synthetic methods have been developed, the synthetic conditions have been optimized, 6 intermediates and 11 supersensitizers are obtained, their structures have been identified by elemental analysis, IR spectrum and 1H-NMR spectrum.. The correctness of the double-electron supersensitization mechanism has been validated by ESR spectrum and photoelectron life. The experiments including photograph capability and film aging in ISO800 high-sensitizing emulsion indicate that this kind of compounds can enhance sensitivity from 20 percent to 30 percent, the results show that they have good supersensitization effects with a good stability in the process of film aging.