Structural, chemical and electrochemical characterization of poly(3,4-ethylenedioxythiophene) (PEDOT) prepared with various counter-ions and heat treatments.
Structural, chemical and electrochemical characterization of poly(3,4-ethylenedioxythiophene) (PEDOT) prepared with various counter-ions and heat treatments.
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DOI：
10.1016/j.polymer.2011.01.042
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发表时间：
2011-03-01
期刊：
影响因子：
4.6
通讯作者：
Martin, David C.
中科院分区：
文献类型：
--
作者：
King, Zachary A.;Shaw, Charles M.;Spanninga, Sarah A.;Martin, David C.
共轭聚合物聚（3，4-亚乙基二氧噻吩）（PEDOT）的电化学沉积形成薄的导电膜，其特别适合于神经植入物的组织-电极界面处的电荷转移。在这项研究中，反离子的选择和退火参数的PEDOT的电气和结构性能的影响进行了研究。膜与各种有机和无机抗衡离子聚合。通过X射线衍射（XRD）进行结晶顺序的研究。电化学阻抗谱（EIS）和循环伏安法（CV）研究了这些薄膜的电学性能。用X射线光电子能谱（XPS）研究了PEDOT薄膜的表面化学。X射线衍射（XRD）结果表明，在一定的反离子存在下，聚合膜具有规则的结构，在~ 1.3nm处PEDOT链具有很强的（100）边-边相关性。在170 °C下退火1小时后，归因于PEDOT的XRD峰消失。用LiClO 4作为抗衡离子聚合的PEDOT在160 °C退火后显示出改善的阻抗和电荷存储容量。
Electrochemical deposition of the conjugated polymer poly(3,4-ethylenedioxythiophene) (PEDOT) forms thin, conductive films that are especially suitable for charge transfer at the tissue-electrode interface of neural implants. For this study, the effects of counter-ion choice and annealing parameters on the electrical and structural properties of PEDOT were investigated. Films were polymerized with various organic and inorganic counter-ions. Studies of crystalline order were conducted via X-ray diffraction (XRD). Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to investigate the electrical properties of these films. X-ray photoelectron spectroscopy (XPS) was used to investigate surface chemistry of PEDOT films. The results of XRD experiments showed that films polymerized with certain small counter-ions have a regular structure with strong (100) edge-to-edge correlations of PEDOT chains at ~1.3 nm. After annealing at 170 °C for 1 hour, the XRD peaks attributed to PEDOT disappeared. PEDOT polymerized with LiClO4 as a counter-ion showed improved impedance and charge storage capacity after annealing at 160 °C.
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DOI：
10.3390/s8010118
发表时间：
2008-01-09
期刊：
Sensors (Basel, Switzerland)
影响因子：
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作者：
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通讯作者：
Shim YB
影响因子：
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影响因子：
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作者：
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通讯作者：
Martin, DC
影响因子：
4.4
作者：
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通讯作者：
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影响因子：
2.3
作者：
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