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化学进展 2009, Vol. 21 Issue (12): 2605-2612 前一篇   后一篇

• 综述与评论 •

有机硼π-共轭光电功能材料*

赵翠华**;赵以红;林吉茂   

  1. (山东大学化学与化工学院    济南  250100)
  • 收稿日期:2008-12-29 修回日期:2009-02-03 出版日期:2009-12-24 发布日期:2009-12-01
  • 通讯作者: 赵翠华 E-mail:chzhao@sdu.edu.cn
  • 基金资助:

    教育部博士点新教师基金;省级资助;国家自然科学基金

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Optoelectronic Materials of Organoboron π-Conjugated Systems

Zhao Cuihua**;  Zhao Yihong;  Lin Jimao   

  1. (School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China)
  • Received:2008-12-29 Revised:2009-02-03 Online:2009-12-24 Published:2009-12-01
  • Contact: Zhao Cuihua E-mail:chzhao@sdu.edu.cn

由于硼元素所特有的一些性质，如硼原子空的p轨道与π-共轭体系的π*轨道间的pπ-π*共轭效应与Lewis碱络合所表现出的强Lewis酸性以及为获得足够的动力学稳定性在硼原子上所引入的大体积芳香取代基使之表现出的立体位阻效应等，将硼引入到π-共轭体可以赋予体系一些独特的光电性能，因此近年来含硼元素的π-共轭材料引起了人们极大的研究兴趣。这类材料已经显示出非常广阔的潜在应用前景，可以用作非线性光学材料、双光子吸收和发光材料、有机电致发光器件中的电子传输材料和发光材料以及化学传感器等。本文根据π-共轭体系分子结构的不同，对有机硼π-共轭材料，包括硼取代基位于末端的线形π-共轭体系、硼原子位于中心的星形π-共轭体系、硼原子位于主链的π-共轭聚合物体系、硼原子桥联的并环π-共轭体系以及硼取代基位于侧链的π-共轭体系等的研究进展进行了综述，并对该领域的发展前景进行了展望。

关键词： 有机硼π-共轭材料, pπ-π*共轭效应, Lewis酸性, 立体位阻效应

The boron-containing π-conjugated materials have attracted considerable research interest in recent years due to their unique optoelectronic properties, which stem from the characteristic features of boron element, such as the p-π* conjugation between the vacant p orbital on the boron atom with π* orbital of the π-conjugated framework, the high Lewis acidity to coordinate with Lewis bases, as well the steric bulk arising from the aryl substituent on the boron atom to get enough kinetic stability. It has been demonstrated that this kind of materials are applicable in a wide range fields, such as nonlinear optics, two-photon absorption and emission materials, electron-transporting and emissive materials in organic light-emitting devices as well as chemosensors. Research progress in the oganoboron π-conjugated materials are reviewed in this paper, in terms of the molecular structures of the π-conjugated systems, including the linear π-conjugated systems with boryl groups at the terminal positions, the starburst π-conjugated systems containing boron atoms at the center, the polymeric π-conjugated systems containing boron atoms in the main chain, the boron-bridged ring-fused π-conjugated systems, as well as the π-conjugated systems with boryl groups at the side positions. The further development tendency of this field is also prospected.

Contents
1 Introduction
2 Research progress in the optoelectronic materials of organoboron π-conjugated systems
2.1 Linear π-conjugated systems with boryl groups at the terminal positions
2.2 The starburst π-conjugated systems containing boron atoms at the center
2.3 The polymeric π-conjugated systems containing boron atoms in the main chain
2.4 The boron-bridged ring-fused π-conjugated systems
2.5 The π-conjugated systems containing boryl groups at the side positions
3 Prospects

Key words: organoboron π-conjugated materials, pπ-π* conjugation, Lewis acidity, steric bulk

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摘要

有机硼π-共轭光电功能材料*