Electrochemical Generation and Spectroscopic Characterization of Charge Carriers within Isolated Planar Polythiophene
Electrochemical Generation and Spectroscopic Characterization of Charge Carriers within Isolated Planar Polythiophene
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DOI：
10.1021/ma300373n
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发表时间：
2012-04
期刊：
影响因子：
5.5
通讯作者：
Ryo Shomura;K. Sugiyasu;T. Yasuda;Akira Sato;M. Takeuchi
中科院分区：
文献类型：
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作者：
Ryo Shomura;K. Sugiyasu;T. Yasuda;Akira Sato;M. Takeuchi
为了揭示掺杂聚噻吩中载流子的性质，在电极上电化学合成了空间隔离的聚噻吩，聚（1 EDOT）。产生的电荷载流子诱导后，控制电化学掺杂，并通过各种光谱方法进行了研究;的电荷载流子进行了鉴定的基础上自旋浓度（ESR光谱），芳族特性（拉曼光谱），和电子跃迁（紫外-可见-近红外吸收光谱）的聚噻吩。该研究的特殊性在于聚（1 EDOT）的电化学反映了单个聚噻吩线的p掺杂过程，因为线间相互作用（即，π-π堆叠）;因此，结果对于理解聚噻吩基材料和器件至关重要且具有信息性。在电化学掺杂时，产生ESR活性极化子。进一步掺杂使极化子集中，这导致极化子对的形成。最后，PO…
In order to unveil the nature of charge carriers in a doped polythiophene, a sterically isolated polythiophenene, poly(1EDOT), was electrochemically synthesized on electrodes. Generation of charge carriers was induced upon controlled electrochemical doping and investigated through various spectroscopic methods; the charge carriers were identified based on spin concentration (ESR spectra), aromatic character (Raman spectra), and electronic transition (UV–vis–NIR absorption spectra) of the polythiophene. Peculiarity of this study lies in the fact that the electrochemistry of the poly(1EDOT) reflects the p-doping process of a single polythiophene wire because interwire interaction (i.e., π–π stacking) is effectively prevented; therefore, the results should be essential and informative to understand polythiophene-based materials and devices. Upon electrochemical doping, ESR active polarons were generated. Further doping concentrated the polarons, which led to the formation of polaron pairs. Eventually, the po...