内敏乳剂的ESR研究  

AN ESR STUDY OF INTERNALLY SENSITIVE EMULSIONS

作　　者：王斌辉[1,2,3] 夏云勇[1,2,3] 张宜恒[1,2,3] 庄思永[1,2,3] 

机构地区：[1]华东理工大学精细化工研究所 [2]化工部第二胶片厂研究所 [3]中国科学技术大学应用化学系

出　　处：《感光科学与光化学》1998年第3期203-209,共7页Photographic Science and Photochemistry

基　　金：国家自然科学基金

摘　　要：本文制备了具有化学结构缺陷以及具有物理晶格缺陷的两种内敏核壳乳剂，并研究了它们的电子自旋共振波谱．随着化学增感时间的增加，ＥＳＲ信号强度增强，达到一最大值后又下降．ＥＳＲ信号强度随核壳比的下降而下降；随灰化程度的上升而下降．不同减感染料由于其减感机理的不同，对内部感光性能和ＥＳＲ信号强度的影响也不同．上述结果可以用空穴在颗粒内部的行为来解释．The preparation and electron spin resonance of two types of internally sensitive core-shell emulsions: with chemical structure imperfections and with physical lattice imperfections were studied in this paper. It was found that both the internal sensitivity and the intensity of ESR signal increased with increase of the chemical sensitization time to a maximum and then decreased. The ESR signal intensity decreased with decrease of the core/shell ratio, and with increase of the fogging level. Different desensitizing dyes had different effects on the internal photographic property and ESR signal intensity because of their desensitizing mechanisms. The results can be explained based on the behavior of the positive hole within the silver halide crystal.

关 键 词：减感剂 ESR 内敏乳剂 化学增感 减感染料 灰化 

分 类 号：TQ572.32[化学工程—精细化工]