Cyano substituted (Z)-(thienylmethylene)-2-indolone as a new building block for near-IR absorbing polymers
Cyano substituted (Z)-(thienylmethylene)-2-indolone as a new building block for near-IR absorbing polymers
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氰基取代的 (Z)-(噻吩亚甲基)-2-吲哚酮作为近红外吸收聚合物的新结构单元
DOI：
10.1016/j.dyepig.2018.02.042
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发表时间：
2018
影响因子：
4.5
通讯作者：
Zhang Qing
中科院分区：
文献类型：
--
作者：
Zhao Dong;Zheng Jiawei;Tang Jianxin;Zhang Qing
合成了一种新的吸电子单体--氰基取代的（Z）-（噻吩亚甲基）-2-吲哚酮（TEI（CN）），并与不同的给体聚合，得到了三种给体/受体交替的共轭聚合物。与未取代的聚合物相比，氰基取代的聚合物显示出显著降低的LUMO能级和小的光学带隙。新聚合物的光学吸收主要出现在近红外波段，峰值在700-800 nm。在强电子给体EDOT的情况下，聚合物PTEI（CN）-EDOT在NIR区域（>700 nm）显示其大部分吸收。制备并测试了基于两种新型聚合物的倒置体异质结聚合物太阳能电池。
A new electron withdrawing monomer, cyano substituted(Z)-(thienylmethylene)-2-indolone (TEI(CN)) has been synthesized and polymerized with different donors to give three alternating donor/acceptor conjugated polymers. The cyano substituted polymers showed significantly reduced LUMO energy levels and small optical bandgaps compared with un-substituted polymer. The optical absorptions of new polymers mainly appeared in NIR range, peaked at 700–800 nm. With strong electron donor EDOT, the polymer, PTEI(CN)-EDOT showed most of its absorption in NIR region (>700 nm). The inverted bulk hetero-junction polymer solar cells based on two of the new polymers were fabricated and tested.