We herein report the development of a regioselective synthetic route to [70]methanofullerenes, which have potential for application as electron acceptors in solution-processed bulk heterojunction solar cells. Sterically hindered sulfur ylide, generated in situ from their corresponding sulfonium salts in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as the base, smoothly reacted with [70]fullerene
我们在此报告了 [70]
甲烷富勒烯的区域选择性合成路线的开发,该路线具有作为电子受体在溶液处理体异质结太阳能电池中应用的潜力。空间位阻
硫叶立德,在
1,8-二氮杂双环 [5.4.0] 十一碳-7-烯 (
DBU) 作为碱存在下,由其相应的锍盐原位生成,与 [70]
富勒烯顺利反应得到 α -型 [6,6]-苯基-C71-
丁酸甲酯 ([70]PCBM),纯度高达 98%。此外,我们成功地证明了 [70] PCBM 的克级合成。