期刊
CHEMICAL COMMUNICATIONS
卷 53, 期 5, 页码 975-978出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cc07820f
关键词
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资金
- EPSRC
- Chinese Scholarship Council
The as-produced isomer mixture of the organic photovoltaic device acceptor material bis-[60] PCBM has been purified into its constituents by peak-recycling HPLC, and those individual isomers were characterised by UV-Vis absorption spectroscopy and cyclic voltammetry. A total of 18 isomerswere purified from the mixture to a standard exceeding 99.5% with respect to other isomers. The HOMOs, LUMOs, and HOMO-LUMO gaps of the purified isomers vary from -5.673 to -5.444 eV, -3.901 to -3.729 eV, and 1.664 to 1.883 eV, respectively. We also find a correlation between HPLC retention time and the relative positions of the addends; in that generally the closer the addends are to each other the longer the retention time of the isomer, and vice versa.
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