A series of novel alternating polymers, namely P(BDTO-TTFQ), P(BDTT-TTFQ), and P(BDTSi-TTFQ), incorporating electron-rich benzo [1,2-b:4,5-bʹ]dithiophene (BDT) derivatives, namely 4,8-bis(2-butyloctyloxy)benzo [1,2-b:4,5-bʹ]dithiophene (BDTO), 4,8-bis(5-(2-butyloctyl)thiophen-2-yl)benzo [1,2-b:4,5-bʹ]dithiophene (BDTT), and 4,8-bis(triisopropylsilylethynyl)-benzo [1,2-b:4,5-ʹ]dithiophene (BDTSi), as well as electron-deficient 5,8-bis(5-(4-hexylthiophen-2-yl)thiophen-2-yl)-2,3-didodecyl-6,7-difluoroquinoxaline (TTFQ) units were prepared. The photo-physical, electrochemical, crystallinity, curvature, charge transport, and photovoltaic properties of the TTFQ-based polymers were investigated thoroughly and compared briefly to those of structurally similar 2,3-didodecyl-6,7-difluoro-5,8-di(thiophen-2-yl)quinoxaline (TFQ)-based polymers, namely P(BDTO-TFQ), P(BDTT-TFQ), and P(BDTSi-TFQ), containing BDTO, BDTT, and BDTSi. This study confirmed that the incorporation of additional π˗bridges (3-hxeylthiophene) between the BDT and TFQ units of P(BDTO-TFQ), P(BDTT-TFQ), and P(BDTSi-TFQ) do not significantly alter the properties of the polymers P(BDTO-TFQ) and P(BDTT-TFQ), but do significantly alter the properties of P(BDTSi-TFQ). Consequently, the polymers P(BDTO-TTFQ) and P(BDTT-TTFQ) exhibit comparable power conversion efficiencies (PCEs, 3.99% and 6.69%, respectively) to those of P(BDTO-TFQ) and P(BDTT-TFQ) (3.49% and 7.06%, respectively), but P(BDTSi-TTFQ) exhibits a significantly improved PCE of 6.21% compared to that of P(BDTSi-TFQ) (0.75%).

一系列新颖的交替聚合物，即P（BDTO-TTFQ），P（BDTT-TTFQ）和P（BDTSi-TTFQ），并结合了富电子的苯并[1,2-b：4,5-bʹ]二噻吩（BDT）衍生物，即4,8-双（2-丁基辛基氧基）苯并[1,2-b：4,5-bʹ]二噻吩（BDTO），4,8-双（5-（2-丁基辛基）噻吩-2-基）苯并[1,2-b：4,5-bʹ]二噻吩（BDTT）和4,8-双（三异丙基甲硅烷基乙炔基）-苯并[1,2-b：4,5-ʹ]二噻吩（BDTSi），以及缺电子的5,8-双（5-（4-己基噻吩-2-基）噻吩-2-基制备）-2，3-二癸基-6，7-二氟喹喔啉（TTFQ）单元。彻底研究了基于TTFQ的聚合物的光物理，电化学，结晶度，曲率，电荷传输和光伏性能，并将其与结构相似的2,3-二十二烷基-6,7-二氟-5,8-基于二（噻吩-2-基）喹喔啉（TFQ）的聚合物，即P（BDTO-TFQ），P（BDTT-TFQ）和P（BDTSi-TFQ），其中包含BDTO，BDTT和BDTSi。这项研究证实，在P（BDTO-TFQ），P（BDTT-TFQ）和P（BDTSi-TFQ）的BDT和TFQ单元之间掺入其他π桥（3-己基噻吩）不会显着改变性能聚合物P（BDTO-TFQ）和P（BDTT-TFQ）的合成，但确实会显着改变P（BDTSi-TFQ）的性质。因此，聚合物P（BDTO-TTFQ）和P（BDTT-TTFQ）具有与P（BDTO-TFQ）和P（BDTT-TFQ）（3.49％和7.06 ）相当的功率转换效率（分别为3.99％和6.69％） ％，分别地），但是P（BDTSi-TTFQ）表现出6.21％一显著提高PCE相比P（BDTSi-TFQ）（0.75％）的。