期刊
CARBON
卷 161, 期 -, 页码 694-701出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2020.01.096
关键词
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资金
- National Natural Science Foundation of China [51672281, 51972309, 51832008]
- Youth Innovation Promotion Association of CAS [2015025]
- Opening Project of PCOSS, Xiamen University [201928]
- Natural Science Foundation of Shanxi Province [201901D111109]
The supramolecular complexes of metallofullerenes and carbon nanoring were constructed and their properties were studied. The size-selective encapsulation of metallofullerene Sc3N@C-78, Sc3N@C-80 and Sc2C2@C-82 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 Sc2C2@C-82 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. (C) 2020 Elsevier Ltd. All rights reserved.
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