light known as therapeutic window and their diprotonated analogues were used as photosensitizers in the aerobic oxidation of cyclooctene to investigate the influence of degree of β bromination on the photocatalytic activity and oxidative stability of H2TPP. Furthermore, the β brominated porphyrins showed significantly decreased fluorescence quantum yields (φF) and radiative decay rate constants but increased
在这项研究中,一系列β-
溴的内消旋-
四苯基卟啉,H 2
TPPBr x(x = 2、4、6和8)的吸收带明显向着可见光的较长波长偏移,这被称为治疗窗,并且其双质子化在环
辛烯的有氧氧化中,将类似物用作光敏剂,以研究β
溴化程度对H 2
TPP的光催化活性和氧化稳定性的影响。此外,β
溴化
卟啉表明显著降低荧光量子产率(φ ˚F)和辐射衰减率常数,但增加了非辐射衰减率常数。在部分
溴化的
卟啉,H 2
TPPBr 2和H 2
TPPBr 4的情况下,观察到最高的催化活性。尽管H 2
TPPBr 2和H 2
TPPBr 4与H 2
TPP一样稳定,但是H 2
TPPBr 6和H 2
TPPBr 8的氧化降解显着高于未
溴化的
卟啉。H 2
TPPBr x的光催化活性之间存在良好的相关性和它们的双质子物种和单重态氧量子产率(φ Δ = 0.02-0.21和0.12〜0.59,分别地),通过单态氧与1,3- d