Synergistic modulation of spin and fluorescence signals in a nano-Saturn assembled by a metallofullerene and cycloparaphenylene nanohoop  

作　　者：Jie Zhang Zhenlin Qiu Chong Zhao Yuxi Lu Wang Li Linshan Liu Chunru Wang Yuanzhi Tan Taishan Wang 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,Key Laboratory of Molecular Nanostructure and Nanotechnology,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]State Key Laboratory for Physical Chemistry of Solid Surfaces,Collaborative Innovation Center of Chemistry for Energy Materials,and Department of Chemistry College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]School of Pharmacy,Guizhou Medical University,Guiyang 550025,China

出　　处：《Nano Research》2023年第2期3372-3378,共7页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52022098 and 51972309);the Youth Innovation Promotion Association of Chinese Academy of Sciences(No.Y201910).

摘　　要：Spin-based interdisciplinary research has attracted considerable attention,and various applications in magnetic memory,quantum science,and precision measuring technology have been reported.In this study,we induced a fluorescence property in a spin-active molecule by supramolecular assembly and realized a synergistic modulation of its spin and fluorescence properties.A Saturn-shaped supramolecular complex was synthesized using a spin-active metallofullerene Sc_(3)C_(2)@C80 with a fluorescent nanohoop of tetra-benzothiadiazole-based[12]cycloparaphenylene(TB[12]CPP),and its spin and fluorescence properties were comprehensively investigated.Temperature-dependent electron paramagnetic resonance(EPR)spectroscopy and fluorescence analyses were conducted.Synchronous changes in the EPR signals and fluorescence peaks were discovered in the temperature range of 170–290 K.Based on nuclear magnetic resonance observations and theoretical calculations,a temperature-dependent host–guest interaction between Sc_(3)C_(2)@C_(80)and a nanohoop was demonstrated,which explained the synchronous changes in the EPR signals and fluorescence peaks for Sc_(3)C_(2)@C_(80)⊂TB[12]CPP.The application of Sc_(3)C_(2)@C_(80)as a molecular spin system to probe the host–guest interaction was also evaluated.These results show that the supramolecular assembly can be used to design advanced spin systems coupled with optical and magnetic behaviors based on paramagnetic and luminescent molecules.

关 键 词：METALLOFULLERENE nanohoop electron spin FLUORESCENCE host–guest interaction 

分 类 号：O62[理学—有机化学]