4-羟基-6-甲基-1,3,3a,7-四氮茚对以苯并三氮唑银为银源的PTG材料感光性能的影响  

The Influence of 4-Hydroxy-6-Methyl-1,3,3a,7-Tetraazaindene on the Photographic Performances of Photothermographic Material Based on Silver Benzotriazole

作　　者：李秋艳[1,2] 李金培[1] 

机构地区：[1]中国科学院理化技术研究所,北京100190 [2]中国科学院研究生院,北京100039

出　　处：《影像科学与光化学》2009年第2期111-120,共10页Imaging Science and Photochemistry

基　　金：国家自然科学基金(20573125)

摘　　要：本文以水性聚乙烯醇(PVA)为粘合剂,原位法合成的AgBr或AgBrI为光敏元,考察了4-羟基-6-甲基-1,3,3a,7-四氮茚钠盐(NaTAI)对以苯并三氮唑银为银源的PTG材料感光性能的影响.实验结果表明:NaTAI对PTG材料具有增感作用,其增感程度随着NaTAI用量的不同而改变,并且感光度升高的同时,灰雾没有明显升高.通过Dember光电压衰减测量,并结合对PTG材料乳液pH值和pAg值的测定以及紫外可见吸收光谱分析,引入NaTAI可以延长光电子寿命,有利于提高潜影形成效率,从而提高感光度.The influences of 4-hydroxy-6-methyl-1,3,3a, 7-tetraazaindene sodium （NaTAI） on the photographic performaces of photothermographic （PTG） material based on silver Benzotriazole （ Ag- BTA） were studied. It is found that NaTAl can remarkably increase the photographic speed of the PTG materials without much fog elevation. According to the measurements of the decay of Dember photovoltage, together with pH, pAg, and UV-Vis spectra, the sensitization of NaTAl is attributed to the reduce of interstitial silver ions in the silver halide grain, which results in elevation of latent image formation efficiency.

关 键 词：光敏热成像材料 苯并三氮唑银 羟基四氮茚 增感 

分 类 号：TQ571[化学工程—精细化工]