作者:Björn Kobin、Sandra Behren、Beatrice Braun-Cula、Stefan Hecht
DOI:10.1021/acs.jpca.6b02127
日期:2016.7.21
Photochemical degradation is an important issue to be overcome in advancing the lifetime of fluorene-containing conjugated polymers. In order to optimize the inertness of the materials, a quantitative measure for the efficiency of degradation is needed. Here, we introduce a method to measure a relative quantum yield of the photochemical degradation by monitoring the kinetics of the process by means
光化学降解是延长含芴共轭聚合物寿命的重要问题。为了优化材料的惰性,需要定量测定降解效率。在这里,我们介绍一种方法,该方法通过借助UV /可见光谱和液相色谱(LC)技术监视过程的动力学来测量光化学降解的相对量子产率。该方法用于一组不同取代的2,7-二苯基芴,用作聚芴材料的模型化合物。我们的测量结果表明,在改变桥取代基后,量子产率将发生数量级的变化,动力学变化表明降解机理发生了变化。