Chao Duobin, Zhao Mengying
School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin, Liaoning, P. R. China.
ChemSusChem. 2017 Sep 11;10(17):3358-3362. doi: 10.1002/cssc.201700930. Epub 2017 Aug 16.
A molecular chromophore-catalyst assembly containing a chromophore ruthenium(II) center (RuIIchro ) and a catalytic copper(II) center (CuIIcat ) has been prepared easily. The assembly was employed for photocatalytic oxidation of sulfides without sacrificial reagent in the presence of dioxygen under blue light irradiation. Unprecedented turnover number (TON) up to 32 000 was achieved. It was elucidated that an electron transferred from excited state of chromophore RuII*chro to CuIIcat along with generation of CuIcat that was further activated by O . These results demonstrate a promising strategy for efficient cooperative photocatalytic reactions under air using the chromophore-catalyst assembly.
一种含有发色团钌（II）中心（RuIIchro）和催化铜（II）中心（CuIIcat）的分子发色团-催化剂组装体已被轻松制备出来。该组装体用于在蓝光照射下、在有氧气存在且无牺牲试剂的情况下对硫化物进行光催化氧化。实现了高达32000的前所未有的周转数（TON）。据阐明，电子从发色团RuII*chro的激发态转移到CuIIcat，同时生成CuIcat，其进一步被O激活。这些结果证明了使用发色团-催化剂组装体在空气中进行高效协同光催化反应的一种有前景的策略。
