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

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

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.

The water-soluble polythiophene electroyte,poly[3-（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.