中文摘要：

设计并合成了一种新型三苯胺衍生物：（4-（（4-（二甲基氨基）苯基）（苯基）氨基）苄基）膦酸,并研究了它的光谱电化学性质和光伏性质.光谱电化学谱图表明该化合物具有电致变色性能：通过施加不同电压,该化合物薄膜可以在透明态和着色态之间转换,且在629 nm处透过率对比度达到最大,为64.2%.由该材料组装成的自供能电致变色器件具有光伏性能,光电转化效率可以达到0.32%.和传统的光电变色器件相比,该新型器件具有结构简单、制备成本低廉、绿色环保等特点,预计在建筑、汽车、显示器等领域将有广泛的应用.

英文摘要：

Self-powered electrochromic device is a kind of instrument that can change transmittance with the electricity converting from solar energy. To realise the dual functions of solar energy harvesting and transmittance changing in one ma- terial, a novel derivative of triphenylamine （4-（（4-（dimethylamino）phenyl）（phenyl）amino）benzyl）phosphoric acid （Ph2ABPA-Me2） is designed and synthesized in this paper. IH NMR, FT-IR and MS were used to characterize the structure of the compound. Working electrode was made by dissolving the compound in chloroform and then immersing titanium diox- ide-coated fluorine-doped tin oxide glass in the solution for 24 h. Its spectroelectrochemical properties were investigated with a UV-vis-IR spectrophotometer and a potentiostat, which allowed us to acquire transmittance spectra under potential control in a solution of 0.1 mol/L lithium perchlorate in propylene carbonate. The experiment was carried out with three electrodes system in which Ag wire acted as reference electrode and Pt wire as counter electrode. The working electrode shows light yellow with relatively high transmittance at --1.5 V and dark green with low transmittance at ＋2.5 V. The maximum transmittance contrast between the two states is 64.2% at 629 nm. Meanwhile, to investigate the photovoltaic properties of PhEABPA-Me2, PhEABPA-MeE-based electrochromic devices were made by sandwiching the working electrode and Pt-based counter electrode together with electrolyte of Iodolyte AN-50. The photovoltaic properties were measured with a solar simu- lator under 1 sun AM1.5G illumination. Energy conversion efficiency of 0.32% was obtained, with short-circuit current den- sity of 1.32 mA/cm2, open-circuit voltage of 0.44 V and fill factor of 0.54. All the results mentioned above suggest that the compound has dual functions of electrochromism and photovoltaics. Compared with traditional photoelectrochromic devices with both a photovoltaic electrode and an electrochromic electrode, the dual functional Ph2ABPA-M