水溶性共轭聚电解质的制备及在有机电致变色器件中的应用

制备了聚噻吩电解质聚3-(1’-丙氧基-3’-磺酸)噻吩](PTH-n3-SO3H).以铂线和ITO玻璃作为电极,PTH-n3-SO3H的水溶液作为支持电解质,分别以齐聚噻吩衍生物5,5″’-双醛基-2,2’∶5’,2″∶5″,2″’-四噻吩(4T-2CHO)和5,5″’-双氰基-2,2’∶5’,2″∶5″,2″’-四噻吩(4T-2CN)薄膜作为电致变色活性层,组装了有机电致变色器件.研究了4T-2CHO和4T-2CN的电致变色性能,同时考察了PTH-n3-SO3H水溶液作为支持电解质在有机电致变色器件中的应用.研究发现,当进行电化学掺杂和去掺杂时,4T-2CHO膜发生从黄色到蓝绿色的可逆变化,4T-2CN膜发生从淡黄色到蓝色的可逆变化.结果表明,PTH-n3-SO3H水溶液可以作为支持电解质用于有机电致变色器件.

Preparation of Water Soluble Conjugate Polyelectrolyte and Application in Organic Electrochromic Devices

The water-soluble polythiophene electroyte, poly3-(1'-propyloxy-3'-acid sulfonate) thiophene](PTH-n3-SO3H), was prepared. Its application as electroyte in organic electrochromic devices was investigated. 5,5"'-diformyl-2,2': 5',2": 5",2"'-tetrathiophene(4T-2CHO) and 5,5"'-dicyane-2,2': 5',2": 5",2"'-tetrathiophene(4T-2CN) films showed reversible, clear color changes in PTH-n3-SO3H aqueous solution. When the voltage were applied between the ITO working electrode and the platinum wire counter electrode, the 4T-2CHO film showed reversible, clear color changes from yellow to blue-green, while the 4T-2CN film showed reversible, clear color changes from light yellow to blue. The results also indicate that PTH-n3-SO3H can be used as electroyte in organic electrochromic devices.