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Synthesis and characterization of single-bond fullerene dimer derivatives
Zhao, Hong-Quan1; Yang, Shihan2; Xu, Tong-Le1; Shi, Xuan2; Lu, Shirong1; Wu, Jian-Wei2; Wang, Chunxiang2; Hu, Jian-Ming2
2020-10-28
摘要Fullerene dimers have attracted extensive attention due to their unique structures and fascinating properties. Here, fullerene dimer derivatives with four to six carbon atoms in the esters are designed and synthesized. The property differences that caused by the carbon number in the esters of the fullerene dimers are investigated by performing their electrochemical, optical, and photoelectric measurements. As the carbon atom numbers in the esters increase from four to five and six, the absorption intensities increase to 1.6- and 4.4-folds. The intensities of the fluorescence spectra increase to 1.8- and 5.2-folds. Their photocurrent increases to 2- and 7-folds under the irradiation of a 405-nm laser. The LUMO energy levels move downward slightly from -3.89 to -3.90 and -3.92 eV, respectively. Our results indicate that as the carbon number increases, the carbon chain lengths in the ester structures increase, very slight effects produced on the energy levels of the fullerene dimers, but strongly contribute to their chemical activities and thus the photoelectronic efficiencies.
关键词fullerene dimer derivatives esters absorption spectra fluorescence spectra photocurrent
DOI10.1557/jmr.2020.244
发表期刊JOURNAL OF MATERIALS RESEARCH
ISSN0884-2914
卷号35期号:20页码:2676-2683
通讯作者Zhao, Hong-Quan(hqzhao@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000595594900004
语种英语