光生酸剂产酸效率的研究

The methods of evaluation on the acid-generation efficiency of PAGs

由罗丹明B在酸作用下异构变色的特性,采用分光光度法系统地考察了罗丹明B在不同酸种、酸浓度以及溶剂体系的变色特性,对光生酸剂在有机溶剂中的产酸效率及其评价方法进行了系统的研究,并考察了溶剂、光生酸剂浓度以及曝光条件对光生酸剂的分解和产酸量子产率的影响。结果表明,本方法在实验范围内能够很好地对光生酸剂的产酸量和产酸量子效率进行定量评价,光生酸剂的分解和产酸效率对其所处的环境(不同的溶剂)表现出很强的依赖性,且光生酸剂的分解产率与产酸率相等,但与其在溶液中的浓度基本没有关系。

According to the character of isomery and meta ehromia of Rhodamine B effeeted by the acid, under different conditions, such as different kinds of acid, different concentrations of acid, different solvents, the metachromia character of RB as well as the acid generation efficiency and estimation methods of PAG in organic solvents had been re searched systematicly. Furthermore, the possible influencing factors effection on the decomposition and acid-generation quanlum productivity ratios of PAGs, including solvents, the concentrations of PAG and exposal factors, were explored. These investigations gives good evidences that the acid-generation dose and acid-generation efficiency of PAGs can be evaluated well quantitatively in our domain, the decomposition and acid-generation quantum productivity ratios of PAGs are approximately equal, both of which deeply de pend on the environment factors, e. g. different solvent species, while not effected by the concentration of PAG in our domain.