Synthesis and spectroscopic properties of novel dipyrrole and tetrapyrrole-based photosensitizers with various biphenylyl substituents
作者:Weronika Porolnik、Monika Kasprzycka、Kinga Podciechowska、Anna Teubert、Jaroslaw Piskorz
DOI:10.1016/j.tet.2022.133088
日期:2022.11
Two series of novel pyrrole-based photosensitizers - sulfanyl porphyrazines, and BODIPY derivatives with different biphenylyl substituents such as fluorine atoms, cyano, or alkyloxycarbonyl groups, were synthesized, characterized, and subjected to broad spectroscopic studies. All tested compounds showed intensive light absorption, but only BODYPY derivatives exhibited emission properties. Moreover, iodinated
合成、表征和进行广谱研究的两个系列新型吡咯基光敏剂 - 硫基四氮杂卟啉和具有不同联苯基取代基(如氟原子、氰基或烷氧基羰基)的 BODIPY 衍生物。所有测试的化合物都表现出强烈的光吸收,但只有 BODYPY 衍生物表现出发射特性。此外,碘化 BODIPY 显示出显着的重原子效应,表现为吸收带红移约 30 nm,荧光强度降低约 20 倍,单线态氧生成效率比未碘化提高 30-60 倍类似物。外围氟原子、氰基或烷氧基羰基的存在与吸收或发射特性之间没有相关性。然而,在四氮杂卟啉和 BODIPY 中,单线态氧的形成受联苯基中取代基的影响。含氰基的化合物产生单线态氧的能力最高,氟类化合物的产生能力最低。光降解研究表明,四氮杂卟啉和非碘化 BODIPY 有低或中度分解,照射 20 分钟后有 5.9-18.8% 的染料降解。然而,碘化 BODIPY 分解得更快,降解百分比在 40.5-65.5% 范围内。照射