Size-controlled synthesis and near-infrared photothermal response of Cp^(*)Rh-based metalla[2]catenanes and rectangular metallamacrocycles  

作　　者：Ying Zhao Yin-Hang Chai Tian Chen Jie Zheng Ting-Ting Li Francisco Aznarez Li-Long Dang Lu-Fang Ma 

机构地区：[1]College of Chemistry and Chemical Engineering,Henan Key Laboratory of Function-Oriented Porous Materials,Luoyang Normal University,Luoyang 471934,China [2]College of Chemistry,Zhengzhou University,Zhengzhou 450001,China [3]Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,State Key Laboratory of Molecular Engineering of Polymers,Department of Chemistry,Fudan University,Shanghai 200438,China

出　　处：《Chinese Chemical Letters》2024年第6期337-343,共7页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22101108 and 22171123);the Shanghai Science and Technology Committee(No.19DZ2270100);training Plan for Young Core Teachers in Higher Education of Henan Province(No.2021GGJS131);Natural Science Foundation of Henan Province(No.232300421232)。

摘　　要：A variety of research reports on novel supramolecular topologies have been published over the last years.However,it is still a great challenge to tap into the inner functional properties of these complexes.Herein,two tetranuclear metallamacrocycles 1 and 2 and four octonuclear[2]catenanes 3-6 were constructed successfully via a coordination-driven self-assembly strategy,by conscious design and use of the tetramethyl bidentate pyridine ligand L1,and the appropriate selection of six binuclear half-sandwich rhodium building units with different longitudinal dimensions.The complexes have been fully characterized by single crystal X-ray diffraction analysis and NMR spectroscopy.Furthermore,near-infrared photothermal studies of the obtained[2]catenanes reveal different photothermal response in solid and solution states,which may be attributed to a strong fluorescence quenching effect of the half-sandwich organometallic fragment and different conjugated effect of Cp^(*)Rh based building blocks in the interlocking structures.The photothermal conversion efficiencies of[2]catenanes 4-6 fall in the range 30.5%-16.5% respectively.This contribution aims to play a key role in the experimental development of Cp^(*)-based photothermal materials.

关 键 词：Catenanes Photothermal materials Supramolecular topologies Half-sandwich fragment 3 3'-N-donor analogues 

分 类 号：O641.4[理学—物理化学]