Three donor–acceptor type π-conjugated polymers were synthesized electrochemically:poly[2,3-di(2-furyl)-5,8-bis(2-(3,4-ethylenedioxythiophene)) quinoxaline] (PFETQ), poly[2,3-di(2-furyl)-5,8-bis(2-thienyl) quinoxaline] (PFTQ) and poly[2,3-di(2-furyl)-5,8-bis(2-(3-methoxythiophene)) quinoxaline] (PFMTQ). All of the synthesized polymers, contained the 2,3-di(2-furyl) quinoxaline moiety in the backbone as the acceptor unit and different thiophene derivatives as the donor units. The electroactivity of the monomers and the electrochemical properties of their polymers were investigated by cyclic voltammetry. The presence of the strong electron-donating ethylenedioxy and methoxy groups on the aromatic structure increased the electron density. Thus, the oxidation potential of FETQ and FMTQ shifted to a lower value than that of FTQ. The optical properties of the polymers were investigated by UV–vis–NIR spectroscopy. Both PFETQ and PFMTQ reveal two distinct absorption bands in the red and blue regions of the visible spectrum, while PFTQ has only one dominant wavelength at 596 nm in the visible region. The colorimetry analysis revealed that while PFTQ has a light blue color, PFETQ and PFMTQ are green in the neutral state. The optical band gaps, defined as the onset of the π–π* transition, were found to be 1.15 eV for PFETQ, 1.2 eV for PFMTQ and 1.34 eV for PFTQ. Moreover, all three polymers showed both n-doping and fast switching times.

电化学合成了三种供体-受体型π共轭聚合物：聚[2,3-二（2-呋喃基）-5,8-双（2-（3,4-乙撑二氧噻吩））喹喔啉]（PFETQ），聚[ 2,3-二（2-呋喃基）-5,8-双（2-噻吩基）喹喔啉]（PFTQ）和聚[2,3-二（2-呋喃基）-5,8-双（2-（3 -甲氧基噻吩））喹喔啉]（PFMTQ）。所有合成的聚合物在主链中均包含2,3-二（2-呋喃基）喹喔啉部分作为受体单元，并使用不同的噻吩衍生物作为供体单元。通过循环伏安法研究了单体的电活性及其聚合物的电化学性能。芳族结构上强供电子乙二氧基和甲氧基的存在增加了电子密度。因此，FETQ和FMTQ的氧化电位比FTQ的氧化电位低。聚合物的光学性质通过紫外-可见-近红外光谱法进行了研究。PFETQ和PFMTQ都在可见光谱的红色和蓝色区域显示了两个不同的吸收带，而PFTQ在可见区域中只有一个主波长在596 nm。比色分析显示，尽管PFTQ为浅蓝色，但PFETQ和PFMTQ在中性状态下为绿色。光学带隙（定义为π–π *跃迁的起点）对于PFETQ为1.15 eV，对于PFMTQ为1.2 eV，对于PFTQ为1.34 eV。此外，所有三种聚合物均显示出n掺杂和快速切换时间。而PFTQ在可见光区域只有一个主波长596 nm。比色分析显示，尽管PFTQ为浅蓝色，但PFETQ和PFMTQ在中性状态下为绿色。光学带隙（定义为π–π *跃迁的起点）对于PFETQ为1.15 eV，对于PFMTQ为1.2 eV，对于PFTQ为1.34 eV。此外，所有三种聚合物均显示出n掺杂和快速切换时间。而PFTQ在可见光区域只有一个主波长596 nm。比色分析显示，尽管PFTQ为浅蓝色，但PFETQ和PFMTQ在中性状态下为绿色。光学带隙（定义为π–π *跃迁的起点）对于PFETQ为1.15 eV，对于PFMTQ为1.2 eV，对于PFTQ为1.34 eV。此外，所有三种聚合物均显示出n掺杂和快速切换时间。