Nonconventional Macromolecular Luminogens with Aggregation-Induced Emission Characteristics
Nonconventional Macromolecular Luminogens with Aggregation-Induced Emission Characteristics
复制标题
具有聚集诱导发光特性的非常规高分子发光体
DOI：
10.1002/pola.28420
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Zhang Yongming
中科院分区：
文献类型：
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作者：
Yuan Wang Zhang;Zhang Yongming
非传统的无共轭结构的发光材料由于其重要性和应用前景而引起人们的广泛关注。这些发光体通常带有叔胺、C = C、C = N、C = O、OH、醚和酰亚胺等亚组。然而，排放机制仍在辩论中。不同的假设，如叔胺的氧化或酸化，C = O基团的聚集，以及集群和电子云重叠提出。与通常在传统发光体中观察到的浓度猝灭和聚集引起的猝灭（ACQ）不同，这些非正统发光体中的许多都表现出独特的聚集诱导发射（AIE）特性，无论其分子结构如何。本文综述了各种具有AIE特征的非正统发光体，旨在概述这一令人兴奋的领域的最新进展，重点是大分子系统。根据报道的结果，聚集触发的发射机制，即不同亚群的聚集与随后的电子云重叠和构象硬化可以很好地合理化大多数系统的电子物理行为。© 2016 Wiley Periodicals，Inc. J.波利姆科学，A部分：聚合物化学2017，55，560-574
Nonconventional luminogens without classic conjugated structures have drawn increasing interests owing to their fundamental importance and promising applications. These luminogens generally bear such subgroups as tertiary amine, C = C, C≡N, C = O, OH, ether, and imide. The emission mechanism, however, remains under debate. Different assumptions like oxidation or acidification of tertiary amines, aggregation of C = O groups, as well as clustering and electron cloud overlap are proposed. Unlike concentration quenching and aggregation‐caused quenching (ACQ) that are normally observed in traditional luminogens, many of these unorthodox luminogens exhibit unique aggregation‐induced emission (AIE) characteristics, regardless of their molecular architectures. This review summarizes varying unorthodox luminogens with AIE features, aiming to outline the recent advances in this exciting area, with focus on the macromolecular systems. In light of the reported results, clustering‐triggered emission mechanism, namely clustering of diverse subgroups with subsequent electron cloud overlap and conformation rigidification can well rationalize the photophysical behaviors of most systems. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2017,55, 560–574