有机化学 ›› 2014, Vol. 34 ›› Issue (9): 1701-1716.DOI: 10.6023/cjoc201403060 上一篇    下一篇

综述与进展

侧链调控在有机光电高分子材料中的应用研究进展

张超, 孙莹, 戴斌, 张雪勤, 杨洪, 林保平, 郭玲香   

  1. 东南大学化学化工学院, 南京 211189
  • 收稿日期:2014-03-27 修回日期:2014-04-26 发布日期:2014-05-23
  • 通讯作者: 林保平 E-mail:lbp@seu.edu.cn
  • 基金资助:

    国家自然科学基金(Nos. 21304018, 21374016)和江苏省自然科学基金(Nos. BK20130619, BK20130617)资助项目.

Resent Progress in Side-Chain Engineering of Organic Photovoltaic Conjugated Polymer

Zhang Chao, Sun Ying, Dai Bin, Zhang Xueqin, Yang Hong, Lin Baoping, Guo Lingxiang   

  1. Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189
  • Received:2014-03-27 Revised:2014-04-26 Published:2014-05-23
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21304018, 21374016) and the Jiangsu Provincial Natural Science Foundation (Nos. BK20130619, BK20130617).

有机光电聚合物材料是由共轭主链与柔性侧链组成,具有制备简单、成本低廉、重量轻及可制成柔性器件等突出优点,近年来成为国内外研究的前沿和热点. 目前对聚合物材料主链结构的优化研究较多,基于侧链调控的报道则相对较少. 对主链共轭高分子光电材料侧链调控的目的主要是改善材料的溶解性能,然而,侧链修饰的影响远非如此. 研究发现,侧链修饰后聚合物材料的吸收光谱、能级分布、载流子迁移率、器件共混膜形貌以及界面形态等光电性能方面可发生不同程度的变化. 此类研究成果无疑将对设计与优化有机聚合物材料分子结构、活性层形貌与界面形态以及器件制备方法和加工工艺具有指导意义. 同时,随着器件制备方法的不断改进以及加工工艺的不断发展,为进一步改善器件效率,提高纳米活性材料的形貌调控与界面形态优化能力,基于有机光电高分子材料侧链调控的研究价值日益突显. 因此,结合高分子光电材料应用领域的研究现状,以聚合物分子侧链结构优化设计为出发点,基于侧链调控为主题,以不同的修饰侧链为研究对象,对光电高分子材料侧链调控中拟解决的问题及本实验室的相关工作做主要综述.

关键词: 侧链调控, 光电性能, 聚合物太阳能电池, 膜形貌

Photovoltaic conjugated polymer materials are composed of π-conjugated backbone and flexible side chains. Their potential advantages of cost-effective production, fabrication on flexible and light weight substrates by roll-to-roll solution processing, capability to be fabricated into flexible devices and reduced environment impact have made them receive considerable attention in both academia and industry. In recent years, most of the interest has been directed into the optimization of main chain, while research on side-chain engineering of polymer is relatively few. Initially, side chains have been primarily utilized as solubilizing groups in organic photovoltaic conjugated polymers. However, roles which side chains play are far beyond. Accordingly, it has been found that side chains of organic conjugated polymer have a different impact on polymer absorption, emission, energy level, carrier mobility, nanoscale morphology and interfacial contact. Certainly enough, these findings have profound guiding significance on molecular structure design and optimization, blend microstructure, interfacial morphology, preparation methods and processing technology of device and so on. Moreover, based on ameliorative preparation and processing technology of device, side-chain engineering is deserved to be deeply researched due to their remarkably improved ability to regulate and control blend microstructure, interfacial morphology so as to obtain ideal photovoltaic properties and device performance, the ultimate goal. Thus, as for resent progress in application, in this perspective article, we will present a review on side chain engineering and assess different side chain on the basis of molecular structure design and optimization, as well as summarize relevant issues to be solved and related work in our laboratory.

Key words: side chain engineering, photovoltaic properties, polymer solar cells, nanoscale morphology