Two novel phenothiazine dyes bearing a single or double cyanoacrylic acid acceptors, which share the same electron donor phenothiazine and the same 4-phenyl-2-(thiophen-2-yl)thiazole π-bridge, were synthesized. Thus, phenothiazine dyes with D-π-A and A-D-π-A framework were configured, and their photophysical properties and photovoltaic performance were investigated. The incorporation of another cyanoacrylic acid acceptor was found to benefit the loading amount on TiO₂, the light-harvesting ability, and the electron-injection efficiency. Dye with double cyanoacrylic acid acceptors showed a double short-circuit current compared with dye with a single acceptor. Therefore, dye with double cyanoacrylic acid acceptors achieved improved photoelectric conversion efficiency 4.35% (J_SC = 10.29 mA cm⁻², V_OC = 0.65 V, FF = 0.65) under standard global AM 1.5 G solar condition with dye N719 (7.19%) as a reference.

合成了两种带有一个或两个氰基丙烯酸受体的新型吩噻嗪染料，它们共享相同的电子给体吩噻嗪和相同的4-苯基-2-（噻吩-2-基）噻唑π-桥。因此，构造了具有D-π-A和AD-π-A骨架的吩噻嗪染料，并对其光物理性质和光电性能进行了研究。发现掺入另一种氰基丙烯酸受体有利于TiO ₂上的负载量，光收集能力和电子注入效率。与具有单受体的染料相比，具有双氰基丙烯酸受体的染料显示出两倍的短路电流。因此，具有双氰基丙烯酸受体的染料的光电转换效率提高了4.35％（J _SC 在标准的全球AM 1.5 G太阳条件下，染料N719（7.19％）为 10.29 mA cm ^-2，V _OC = 0.65 V，FF = 0.65）。