Electrochromic and electrochemical properties of 3-pyridinyl and 1,10-phenanthroline bearing poly(2,5-di(2-thienyl)-1H-pyrrole) derivatives
Electrochromic and electrochemical properties of 3-pyridinyl and 1,10-phenanthroline bearing poly(2,5-di(2-thienyl)-1H-pyrrole) derivatives
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DOI：
10.1016/j.solmat.2010.03.027
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发表时间：
2010-07
影响因子：
6.9
通讯作者：
Jaeyoung Hwang;J. Son;Y. Shim
中科院分区：
文献类型：
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作者：
Jaeyoung Hwang;J. Son;Y. Shim
本研究探讨了一种高效的合成路线和表征的两个衍生物的2，5-二（2-噻吩基）-1H-吡咯，纳入3-吡啶基和1，10-菲咯啉部分的中心吡咯环。在0.1M TBAP/二氯甲烷溶液中，通过在玻碳电极上的电聚合，合成了导电的聚PTPy和聚PhenTPy膜。聚合物膜的特征在于使用循环伏安法（CV），在原位电导率测量，并在原位光谱电化学。在0.96/0.66和0.89/0.73V处分别观察到聚PTPy和聚PhenTPy膜的氧化还原峰。在1.4V时，聚PTPy和聚PhenTPy的最大电导率分别为6.5×10− 2和9.2×10−2S/cm。光谱电化学分析表明，聚PTPy膜在中性状态下为棕黄色（λmax= 430 nm），完全氧化状态下为深蓝色（1.4V）。类似地，polyPhenTPy在中性状态下为绿黄色（λmax= 451 nm），在完全氧化状态下为浅蓝色（1.4V）。聚合物薄膜具有快速的光开关时间在1.0秒以内。这些薄膜的电化学和光谱电化学表征表明，该材料是高度电活性和强大的电致变色。
This study examined a highly efficient synthetic route and characterization of two derivatives of 2,5-di(2-thienyl)-1H-pyrrole that incorporated 3-pyridinyl and 1,10-phenanthroline moieties in the central pyrrole ring. The electrically conductive polyPTPy and polyPhenTPy films were synthesized through electropolymerization on a glassy carbon electrode in a 0.1M TBAP/dichloromethane solution. The polymer films were characterized using cyclic voltammetry (CV), in situ conductivity measurements, and in situ spectroelectrochemistry. The redox peaks of the polyPTPy and polyPhenTPy films were observed at 0.96/0.66 and 0.89/0.73V, respectively. The maximum conductivities of polyPTPy and polyPhenTPy were 6.5×10−2and 9.2×10−2S/cm at 1.4V. The spectroelectrochemical analysis showed that the polyPTPy film was brownish-yellow color (λmax=430nm) in the neutral state and dark blue (1.4V) in the fully oxidized state. Similarly, polyPhenTPy was greenish-yellow color (λmax=451nm) in the neutral state and light blue (1.4V) in the fully oxidized state. The polymer films exhibited a fast optical switching time within 1.0s. The electrochemical and spectroelectrochemical characterizations of these films revealed that the materials were highly electroactive and robust in terms of electrochromics.