Size-selective encapsulation of metallofullerenes by [12]Cycloparaphenylene and dissociation using metal-organic framework. (May 2020)

• Record Type: Journal Article
• Authors: Zhang, Jie; Zhao, Chong; Meng, Haibing; Nie, Mingzhe; Li, Qian; Xiang, Junfeng; Zhang, Zhuxia; Wang, Chunru; Wang, Taishan
• Is Part Of: Carbon. Volume 161(2020)
• Page Start: 694
• Page End: 701
• Publication Date: 2020-05
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2020.01.096
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: The supramolecular complexes of metallofullerenes and carbon nanoring were constructed and their properties were studied. The size-selective encapsulation of metallofullerene Sc3 N@C78, Sc3 N@C80 and Sc2 C2 @C82 by a carbon nanoring of [12]Cycloparaphenylene ([12]CPP) was found. Fluorescence spectral titration experiments showed the different quenching effect of matallofullerenes on photoluminance of [12]CPP. It was found that Sc2 C2 @C82 has a stronger affinity to [12]CPP, and their supramolecular complex has a stronger host-guest interaction. Electrochemical results revealed that the redox potentials of encapsulated matallofullerenes are shifted compared to pristine species. Moreover, these supramolecular complexes can be dissociated using a metal-organic framework (MOF-177), which can only absorb the metallofullerene, leaving behind hollow [12]CPP. These results reveal the special supramolecular chemistry for metallofullerenes, [12]CPP nanoring, and porous MOF-177. In addition, the powerful attraction of porous MOF-177 for metallofullerene can break the host-guest interaction between metallofullerene and nanoring, which is applicable in separation. Graphical abstract: Image 1