Herein, we present electrochromic properties of polythiophenes (PEDOT-Ru, PProDOT-Ru, PSNS-Ru) which were synthesized through electrochemical polymerization of thiophene derivatives tethered to [Ru(bpy)₂pytri]²⁺ complexes via alkyl chain. The unconjugated spacer hinders the effective electronic interaction between the metal center and polymer backbone provided explicitly different multichromic and ambipolar nature to polythiophenes from their metal free counterparts (PEDOT, PProDOT and PSNS). The cathodic behavior of all polymers was mainly dominated by the redox and optical properties of the tethered Ru complex whereas their anodic behavior depended on properties of both the conjugated backbone and the Ru complex. Modification of conjugated backbone from SNS, ProDOT to EDOT led to a distinct variation of band gap from 2.44 eV, 1.94 eV–1.84 eV and provided a wide span of colors at neutral state (yellow, orange, green, respectively) which are all evidently different from their metal free counterparts. PEDOT based metallopolymer reached as high as 46.24% optical contrast and 2.52 s switching time. The coloration efficiency of SNS, ProDOT and EDOT based polymers were calculated as 69.42, 298.70, 365.22 cm²/C, respectively. The polymers displayed distinct colors from various hues of red, green and blue legs of RGB color-space upon sequential anodic and cathodic polarization indicating the rewarding effect of tethering of Ru(II) complex and backbone derivatization in refinement of electrochromic properties of polythiophenes.

在这里，我们介绍了聚噻吩（PEDOT-Ru，PProDOT-Ru，PSNS-Ru）的电致变色性质，这些聚噻吩是通过束缚于[ Ru（bpy）₂ pytri ] ²⁺的噻吩衍生物进行电化学聚合而合成的通过烷基链的配合物。非共轭间隔基阻碍了金属中心与聚合物主链之间的有效电子相互作用，从而为聚噻吩提供了与不含金属的对应物（PEDOT，PProDOT和PSNS）明显不同的多色和双极性性质。所有聚合物的阴极行为主要受束缚的Ru络合物的氧化还原和光学性质支配，而它们的阳极行为取决于共轭骨架和Ru络合物的性质。从SNS，ProDOT到EDOT的共轭骨架的修饰导致带隙从2.44 eV，1.94 eV–1.84 eV明显变化，并在中性状态下提供了宽范围的颜色（分别是黄色，橙色，绿色），这些颜色显然都是明显的与不含金属的同类产品不同。基于PEDOT的金属聚合物达到了46。24％的光学对比度和2.52 s的切换时间。计算出基于SNS，ProDOT和EDOT的聚合物的着色效率为69.42、298.70、365.22 cm² / C，分别。在连续的阳极和阴极极化作用下，聚合物显示出来自RGB颜色空间的红色，绿色和蓝色分支的各种颜色的不同颜色，表明Ru（II）络合物的束缚和主链衍生化在改善聚噻吩电致变色性能方面的有益作用。