Organic Polymeric Electrochromic Devices: Polychromism with Very High Coloration Efficiency
Organic Polymeric Electrochromic Devices: Polychromism with Very High Coloration Efficiency
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DOI：
10.1021/cm0301773
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发表时间：
2004-01
影响因子：
8.6
通讯作者：
G. Sonmez;H. Meng;F. Wudl
中科院分区：
文献类型：
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作者：
G. Sonmez;H. Meng;F. Wudl
详细报道了电沉积聚合物电致变色显示材料聚（1，4-双（2-[3 '，4'-亚乙二氧基]噻吩基）-2-甲氧基-5-2 "-乙基己氧基苯）（P（BEDOT-MEHB））的电致变色性能。虽然聚合物在完全氧化状态下是透明的，但是对于中性和部分氧化的聚合物在可见光区域中获得的两个吸收带是由于来自相同材料的两种不同颜色。与其他无机或有机电致变色材料相比，P（BEDOT-MEHB）薄膜表现出非常高的显色效率值：在535 nm处高达680 cm 2/C，在760 nm处为−360 cm 2/C。该膜具有显示阴极和阳极着色的优点。由聚合物主链上的EDOT单元之间的甲氧基乙基己氧基苯产生的空间使得带负电荷的抗衡离子更容易注入/排斥到聚合物内部/外部，从而在相同的光密度下产生比PEDOT更高的掺杂水平。非常明确的电化学。
The electrochromic properties of electrodeposited poly(1,4-bis(2-[3‘,4‘-ethylenedioxy]thienyl)-2-methoxy-5-2‘ ‘-ethylhexyloxybenzene) (P(BEDOT-MEHB)), a material for polymer electrochromic displays, are reported in detail. While the polymer is transparent in the fully oxidized state, two absorption bands obtained in the visible region for the neutral and partially oxidized polymer are due to two different colors from the same material. Compared to other inorganic or organic electrochromic materials, the P(BEDOT-MEHB) films exhibited very high coloration efficiency values: as high as 680 cm2/C at 535 nm and −360 cm2/C at 760 nm. The films have the advantage of exhibiting cathodic and anodic coloration. The space created by the methoxy ethylhexyloxy benzene between EDOT units on the polymer backbone makes the injection/rejection of the negatively charged counterions inside/outside of the polymer easier, resulting in higher doping levels than PEDOT at the same optical density. Very well-defined electrochemi...