如何设计基于供体-受体的杂环共轭聚合物用于从有机电子到传感器的应用

IF 7.1 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
K. Mahesh, Subramanian Karpagam, K. Pandian
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引用次数: 28

摘要

在过去的几年中,有机半导体共轭聚合物的设计取得了重大进展,这种聚合物易于传输空穴或电子,并且可以导致发光。共轭主链主要由供电子(给体)和供电子(受体)单元组成,它们在共轭低聚物或聚合物中作为交替基团,可以通过π共轭长度、单体改变、分子间/分子内相互作用和能级等物理性质来调节。当然,今天值得注意的是,生产材料的最高已占据分子轨道水平主要位于给电子部分,最低未占据分子轨道水平位于接受电子部分。共轭低聚物或聚合物由于其特殊的感知有毒化学物质、金属离子和生物分子的能力而被用于许多检测领域。共轭聚合物具有独特的离域π-电子“分子线”,可以显着扩大荧光强度。聚合物的荧光强度可以被特定的猝灭分子猝灭。本文就这些共轭聚合物的荧光强度、对多种金属离子的检测、溶解度、光化学稳定性、光电性能以及不同官能团对其的调控等方面进行了综述。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

How to Design Donor–Acceptor Based Heterocyclic Conjugated Polymers for Applications from Organic Electronics to Sensors

How to Design Donor–Acceptor Based Heterocyclic Conjugated Polymers for Applications from Organic Electronics to Sensors

Over the past few years, significant progress has been made in the design of organic semi-conducting conjugated polymers that readily transport holes or electrons and can result in light emission. The conjugated backbone consist mainly of electron-donating (donor) and electron-withdrawing (acceptor) units as alternating groups in a conjugated oligomer or polymer that can be regulated by physical properties such as π conjugation length, monomer alteration, inter/intramolecular interactions and energy levels. Certainly, it is notable today that the highest occupied molecular orbital level of the producing material is localized predominantly on the electron-donating moiety and lowest unoccupied molecular orbital level on the electron-accepting moiety. Conjugated oligomers or polymers are used in many detecting fields due to their exceptional ability to sense toxic chemicals, metal ions and biomolecules. The conjugated polymers have unique delocalized π-electronic “molecular wires” that can expand the fluorescence intensity considerably. The fluorescence intensity of polymers can be quenched by particular quenching molecules. In this review, the fluorescence intensity, detecting of multiple metal ions, solubility, photochemical stability and optoelectronic properties of these conjugated polymers, and how they can be regulated by different functional groups, are discussed in detail.

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来源期刊
Topics in Current Chemistry
Topics in Current Chemistry Chemistry-General Chemistry
CiteScore
13.70
自引率
1.20%
发文量
48
期刊介绍: Topics in Current Chemistry is a journal that presents critical reviews of present and future trends in modern chemical research. It covers all areas of chemical science, including interactions with related disciplines like biology, medicine, physics, and materials science. The articles in this journal are organized into thematic collections, offering a comprehensive perspective on emerging research to non-specialist readers in academia or industry. Each review article focuses on one aspect of the topic and provides a critical survey, placing it in the context of the collection. Selected examples highlight significant developments from the past 5 to 10 years. Instead of providing an exhaustive summary or extensive data, the articles concentrate on methodological thinking. This approach allows non-specialist readers to understand the information fully and presents the potential prospects for future developments.
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