Donor conjugated polymers-based on alkyl chain substituted oligobenzo[c]thiophene derivatives with well-balanced energy levels for bulk heterojunction solar cells
作者:Michael Ruby Raj、Sambandam Anandan
DOI:10.1039/c3ra41518j
日期:——
4-phenylene)bis(3-(5-(3-(3-hexylthiophen-2-yl)benzo[c] thiophen-1-yl)thiophen-2-yl)acrylonitrile (CN-PHTBTPB) and poly(2Z,2′Z)-2,2′-(2,5-bis(octyloxy)-1,4-phenylene)bis(3-(5-(3-(3-octylthiophen-2-yl)benzo[c]thiophen-1-yl)thiophen-2-yl)acrylonitrile (CN-POTBTPB)), comprised of hexyl and octyl chains substituted at the 3-position of 1,3-di(thiophene-2-yl)benzo[c]thiophene moieties as a donor unit coupled with
我们设计并合成了两种供体共轭聚合物(poly(2Z,2'Z)-2,2'-(2,5-bis(octyloxy)-1,4-phenylene)bis(3-(5-(3-( 3-己基噻吩-2-基)苯并[c]噻吩-1-基)噻吩-2-基)丙烯腈(CN-PHTBTPB)和聚(2Z,2'Z)-2,2'-(2,5-双(辛氧基)-1,4-亚苯基)双(3-(5-(3-(3-辛基噻吩-2-基)苯并[c]噻吩-1-基)噻吩-2-基)丙烯腈(CN- POTBTPB)),由在1,3-二(噻吩-2-基)苯并[c]噻吩部分的3位取代的己基和辛基链作为供体单元,与1,4-双-(氰基)通过Knoevenagel缩聚反应,然后进行化学氧化聚合方法,制得-2-噻吩基亚乙烯基)亚苯基前体,两种合成的聚合物(CN-PHTBTPB和CN-POTBTPB)展现出减小的约1.86 eV的光学带隙。实验上发现,所得聚合物具有较深的HOMO(约-5