Photocatalytic hydrogen production from acidic aqueous solution in BODIPY-cobaloxime-ascorbic acid homogeneous system  

作　　者：An Xie Zhong-Hua Pan Miao Yu Geng-Geng Luo Di Sun 

机构地区：[1]School of Materials Science and Engineering, Xiamen University of Technology [2]Fujian Key Laboratory of Photoelectric Functional Materials, College of Materials Science and Engineering, Huaqiao University [3]School of Chemistry and Chemical Engineering, Shandong University

出　　处：《Chinese Chemical Letters》2019年第1期225-228,共4页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China (Nos. 21641011, 21571115 and 21701133);the Program for New Century Excellent Talents in Fujian Province University and the Fujian Key Laboratory of Functional Materials and Applications (No. fma2017107);the Natural Science Foundation of Shandong Province (No. JQ201803);Young Scholars Program of Shandong University (No. 2015WLJH24);the Fundamental Research Funds of Shandong University (No. 104.205.2.5) for financial support of this work

摘　　要：Iodinated boron dipyrromethene(BODIPY) dyes with 8-hydroxyl-quinoline or phenylamine moiety at the meso-position on the BODIPY core were used as efficient photosensitizers(PSs) of three-component light-driven production of H_2 system from acidic aqueous solution in conjunction with a cobaloxime[CoⅢ(dmgH)_2 PyCl](dmgH = dimethylglyoximate, and py = pyridine) as proton-reducing catalyst and ascorbic acid(H_2 A) as sacrificial electron donor. This is the first example of BODIPYs as homogeneous hydrogen-generating PSs employed in the acidic aqueous conditions. That they are active in the acidic solutions and inactive in the basic conditions may indicate that the extent of competition between intramolecular and intermolecular electron transfer reactions exists. Efficient bimolecular electron transfer reaction between PS and molecular catalyst is needed to make H_2 production, while the intramolecular electron transfer of PS may curb H_2 production. The results underscore that the chemical modification of BODIPYs can be performed, thus allowing for the transformation of acid and base conditions for the light-driven H_2 production.Iodinated boron dipyrromethene(BODIPY) dyes with 8-hydroxyl-quinoline or phenylamine moiety at the meso-position on the BODIPY core were used as efficient photosensitizers(PSs) of three-component light-driven production of H_2 system from acidic aqueous solution in conjunction with a cobaloxime[CoⅢ(dmgH)_2 PyCl](dmgH = dimethylglyoximate, and py = pyridine) as proton-reducing catalyst and ascorbic acid(H_2 A) as sacrificial electron donor. This is the first example of BODIPYs as homogeneous hydrogen-generating PSs employed in the acidic aqueous conditions. That they are active in the acidic solutions and inactive in the basic conditions may indicate that the extent of competition between intramolecular and intermolecular electron transfer reactions exists. Efficient bimolecular electron transfer reaction between PS and molecular catalyst is needed to make H_2 production, while the intramolecular electron transfer of PS may curb H_2 production. The results underscore that the chemical modification of BODIPYs can be performed, thus allowing for the transformation of acid and base conditions for the light-driven H_2 production.

关 键 词：BODIPY DYES PHOTOCATALYTIC H2 production PHOTOSENSITIZER COBALOXIME Electron donor 

分 类 号：O6[理学—化学]