Application of Novel Calix[4]arene Metal-free Sensitizers in Dye-sensitized Photoelectrochemical Cells for Water Splitting  

作　　者：LUO Teng HUANG Jianfeng LIU Junmin 

机构地区：[1]School of Materials Science and Engineering,Sun Yat-sen University,Guangzhou 510275,P.R.China

出　　处：《Chemical Research in Chinese Universities》2020年第6期1091-1096,共6页高等学校化学研究（英文版）

基　　金：Supported by the the National Natural Science Foundation of China(Nos.21572280,21975291,and 61772053);the Natural Science Foundation of Guangdong Province,China(No.2019A1515011640);the Fundamental Research Funds for the Central Universities of China(No.19lgpy12).

摘　　要：A series of novel calix[4]arene metal-free dyes,featuring macrocyclic structure and unique conical confor mation,has been introduced into photoanode-based dye-sensitized electrochemical cell system as photosensitizers.The electrochemical properties of the corresponding sensitized photoanodes were systematically studied in the absence.presence of water oxidation catalyst(WOC).Furthermore,the visible-light-driven overall water-splitting reactions wero conducted by fully assembled devices,obtaining a performance trend of Calix-3>Calix-2 Calix-1.The correspondins device of Calix-3 exhibited the best photoactivity,giving an initial photocurrent density of ca.300 pA/cm^2,an IPEC peak value of ca.9.0%at 365 nm and a wide photo-respond band up to ca.620 nm.The best performance of Calix-3 an be attributed to its most effective light-harvesting ability,best ICT transition property,highest oxidation potentiaand thus best ability of activating WOC.This work offers an inspiration for the application of new-type effective metal-free sensitizers in photocatalytic water-splitting device.

关 键 词：CALIXARENE Sensitizer Water splitting Solar fuel Dye-sensitized photoelectrochemical cell 

分 类 号：O62[理学—有机化学]