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以1,2-二(4-吡啶基)乙烯、卤代烃、7,7,8,8-四氰基对苯二醌二甲烷(TCNQ)为原料,合成了4种新型的1,2-二(4-吡啶基)乙烯双季铵盐-TCNQ阴离子自由基复合物(VBPDTCs),通过1H NMR、13C NMR、IR对其结构进行了表征,并研究了其电化学性质.循环伏安研究表明,它们均有3组明显的氧化还原峰,且氧化还原可逆性好;紫外吸收光谱表明,它们均具有较低的能量带隙(Eg?1.8 e V).此外,以VBPDTCs为原料组装的电致变色器件,当施加?2.5~+2.5 V电压时,器件颜色在绿色和血红色间循环变化,且变色效果明显.研究表明,VBPDTCs是一种具有广泛应用前景的新型电致变色材料.
In this paper, four novel 1,2-bis (4-pyridyl) ethene, halogenated hydrocarbons and 7,7,8,8-tetracyanoquinodimethane (TCNQ) (VBPDTCs) were synthesized and characterized by 1H NMR, 13C NMR and IR. The electrochemical properties of the compounds were investigated by cyclic voltammetry The results showed that all of them have three groups of obvious redox peaks, and their redox reversibility is good. UV absorption spectra show that all of them have a lower energy band gap (Eg? 1.8eV) .In addition, using VBPDTCs as raw material Of the electrochromic device, when the voltage of 2.5 ~ +2.5 V is applied, the color of the device changes cyclically between the green and the red color, and the color change effect is obvious.The research shows that VBPDTCs is a new electrochromic material with wide application prospect .