Cui Chaohua, Wong Wai-Yeung
Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, PR China.
Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P R China.
Macromol Rapid Commun. 2016 Feb;37(4):287-302. doi: 10.1002/marc.201500620. Epub 2016 Jan 11.
Side chains play a considerable role not only in improving the solubility of polymers for solution-processed device fabrication, but also in affecting the molecular packing, electron affinity and thus the device performance. In particular, electron-donating side chains show unique properties when employed to tune the electronic character of conjugated polymers in many cases. Therefore, rational electron-donating side chain engineering can improve the photovoltaic properties of the resulting polymer donors to some extent. Here, a survey of some representative examples which use electron-donating alkylthio and alkoxy side chains in conjugated organic polymers for polymer solar cell applications will be presented. It is envisioned that an analysis of the effect of such electron-donating side chains in polymer donors would contribute to a better understanding of this kind of side chain behavior in solution-processed conjugated organic polymers for polymer solar cells.
侧链不仅在改善聚合物的溶解性以用于溶液加工器件制造方面发挥着重要作用，而且在影响分子堆积、电子亲和力以及器件性能方面也起着重要作用。特别是，在许多情况下，当使用供电子侧链来调节共轭聚合物的电子特性时，它们会表现出独特的性质。因此，合理的供电子侧链工程在一定程度上可以改善所得聚合物给体的光伏性能。在此，将介绍一些在聚合物太阳能电池应用中，在共轭有机聚合物中使用供电子烷基硫醚和烷氧基侧链的代表性实例。可以预想，分析聚合物给体中此类供电子侧链的作用将有助于更好地理解溶液加工的共轭有机聚合物中这种侧链行为在聚合物太阳能电池中的应用。
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