Regioselectivity enhancement in synthesis of [70]fullerene derivatives by introduction of a branched structure
Organic & Biomolecular Chemistry(2019)
摘要
Regio-purity in [70]fullerene derivatives is of great importance to improve the power conversion efficiencies of organic photovoltaics. We found that the introduction of a branched structure to [70]PCBM enhanced the yield of alpha-isomers. The effect of the steric group in the reaction mechanism was theoretically investigated and a difference in the activation energies within specific pathways was revealed.
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关键词
regioselectivity enhancement,synthesis
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