Photosensitizers: comprehensive photophysics/photochemistry and theory of coumarins, chromones, their homologues and thione analogues
作者:Ralph S. Becker、Sankar Chakravorti、Carlos A. Gartner、Maria de Graca Miguel
DOI:10.1039/ft9938901007
日期:——
been determined for many of a group of 22 carbonyl and thione compounds. These include coumarins, psoralens, chromones and furochromone and their thiones. Many of the thiones were synthesized for the first time. Two types of theoretical calculations were carried out on the majority of the compounds. The principal goals of the research for the thiones, were (1) to produce or improve the photosensitizer
对于22种羰基和硫酮中的许多化合物,已确定其光物理-光化学行为,包括吸收光谱,荧光光谱和寿命,磷光光谱,三重态-三重态瞬态光谱,三重态寿命和量子产率以及敏化的单重态氧的形成和产率。化合物。这些包括香豆素,补骨脂素,色酮和呋喃色酮及其硫酮。许多硫酮是首次合成的。对大多数化合物进行了两种类型的理论计算。硫酮研究的主要目标是(1)在体内产生或提高化合物的光敏剂能力,(2)将化合物的光谱移动到更长的波长,(3)增加三重态和单重态氧的量子产率。其中大多数已基本实现。已经使用一种独特的测试技术评估了两种硫酮的光敏能力,该测试技术采用了一系列基因工程细菌。