Poly(3,4-alkylenedioxypyrrole)s: Highly stable electronically conducting and electrochromic polymers

被引:164
作者
Schottland, P [1 ]
Zong, K [1 ]
Gaupp, CL [1 ]
Thompson, BC [1 ]
Thomas, CA [1 ]
Giurgiu, I [1 ]
Hickman, R [1 ]
Abboud, KA [1 ]
Reynolds, JR [1 ]
机构
[1] Univ Florida, Dept Chem, Ctr Macromol Sci & Engn, Gainesville, FL 32611 USA
关键词
D O I
10.1021/ma000490f
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A series of poly(3,4-alkylenedioxypyrrole)s are reported as a new class of electronically conducting polymers exhibiting especially low oxidation potentials from ca. -0.6 to -0.4 V vs Fc/Fc(+) (equivalent to -0.15 to +0.05 V vs SCE) as desired for ambient stability of the doped and conducting states. These polymers exhibit unique combinations of multicolor electrochromism, switching from a red or orange neutral state to a light blue/gray doped state, passing through a darker intermediate state (brown), as examined by in situ colorimetry. High spectral contrast ratios have been measured throughout the visible region with a maximum Delta%T = 76% at 534 nm for poly[3,4-(2,2-dimethylpropylenedioxy)pyrrole) (PProDOP-(CH3)(2)). PProDOP-(CH3)(2) exhibits outstanding redox switching stability, being able to undergo 40 000 deep double-potential switches between its doped and neutral states (1 s, Delta%T-max = 76%) while retaining more than 90% of its electroactivity. A high level of stability to overoxidation has also been observed as these materials show limited degradation of their electroactivity at potentials 2 V above their half-wave potential. Triflate-doped free-standing films of PEDOP and PProDOP, having high electrical conductivities of 83 and 95 S/cm, respectively, have been obtained by galvanostatic deposition at low temperature (-7 degrees C).
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收藏
页码:7051 / 7061
页数:11
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