Electron transfer photochromism of Ln-based(Ln=Dy,Tb)coordinated behavior

作     者：Qian Zhang Song-De Han Qi Li Ji-Xiang Hu Guo-Ming Wang 张倩;韩松德;李琪;胡继祥;王国明

作者机构：College of Chemistry and Chemical EngineeringQingdao UniversityQingdao 266071China 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第3期

页      面：788-794页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(21901133,22171155 and 22071126) the State Key Laboratory of Fine Chemicals(KF1905) 

主　　题：electron transfer photochromism photogenerated radicals single-molecule magnets switch off 

摘      要：Switching on/off single-molecule magnets(SMMs)at room temperature is still a challenge in moleculebased ***,two photochromic Ln-based(Ln=Dy,Tb)phosphonate coordinated polymers were synthesized with regulable SMM *** reversible room-temperature photo-coloration was an electron transfer process with a generation of relatively stable radicals,characterized by structural analyses,ultraviolet-visible,luminescence and electron spin resonance spectra and magnetic ***,owing to the antiferromagnetic coupling interactions between Ln^(3+) ions and photogenerated radicals,the room-temperature light irradiation surprisingly switched off the SMM behavior,showing the first example of radicalquenched SMMs in the molecule-based ***,the silient SMM behavior could be recovered after eliminating photogenerated radicals via heat treatment,showing a reversible off/on switch of SMMs via light and *** work constructs a system for switching off/on SMMs through electron transfer photochromism,providing a visual operation way via naked-eye-detectable coloration for the switchable SMMs.