Polymer-Supported Photosensitizers for Oxidative Organic Transformations in Flow and under Visible Light Irradiation
作者:John M. Tobin、Timothy J. D. McCabe、Andrew W. Prentice、Sarah Holzer、Gareth O. Lloyd、Martin J. Paterson、Valeria Arrighi、Peter A. G. Cormack、Filipe Vilela
DOI:10.1021/acscatal.7b00888
日期:2017.7.7
styrene using freeradical polymerization to deliver heterogeneous triplet photosensitizers in three distinct physical formats: gels, beads, and monoliths. These photosensitizers were employed for the production of singlet oxygen (1O2) and for the aerobic hydroxylation of arylboronic acids via superoxide radical anion (O2•–), whereby the materials demonstrated good chemical and light stability. BTZ-containing
合成了一种基于2,1,3-苯并噻二唑(BTZ)的乙烯基交联剂,并使用自由基聚合与大量过量的苯乙烯共聚,以三种不同的物理形式(凝胶,微珠和整料)提供异质三线态光敏剂。这些光敏剂用于产生单线态氧(1 O 2)和芳基硼酸通过超氧自由基阴离子(O 2 •–)的需氧羟基化,因此该材料表现出良好的化学稳定性和光稳定性。含BTZ的珠子和整料在商业流动反应器中被用作光敏剂,并且1 O 2 还通过直接日光照射证明了其生产,其转化率与将420 nm LED模块用作光子源时所达到的转化率相当。