Department of Chemistry, Colorado School of Mines, Golden, CO 80401, USA.
Nanoscale. 2017 Jul 13;9(27):9359-9364. doi: 10.1039/c7nr03868b.
Tunable reaction selectivity on a single catalyst is a continual goal in chemical syntheses. Herein, we report an unexpected light-directed intermediate selectivity using well-known plasmonic photocatalysts. We observed distinct intermediate selectivity behaviors between using UV and visible light irradiations. Chemical computations and quenching experiments suggest that the radicals generated by the plasmonic excitation govern the light-directed selectivity. The broader impact of this work ranges from selective yield of desirable intermediates for subsequent syntheses without tedious separation procedures, to arousing interest in examining new opportunities for plasmonic photocatalysts.
在单一催化剂上实现可调反应选择性是化学合成的持续目标。在此，我们报告了一种使用众所周知的等离子体光催化剂的意外的光控中间选择性。我们观察到使用 UV 和可见光照射时中间选择性行为的明显差异。化学计算和猝灭实验表明，由等离子体激发产生的自由基控制光控选择性。这项工作的更广泛影响范围从选择性获得后续合成所需的中间产物（无需繁琐的分离程序），到激发人们对等离子体光催化剂新机会的兴趣。
