Molecules that exhibit solid-state luminescence enhancement, i.e. the rare property to be more strongly emissive in the solid state than in solution, find an increasing number of applications in the fields of optoelectronic and nanophotonic devices, sensors, security papers, imaging, and theranostics. Benzazole (BZ) heterocycles are of particular value in this context. The simple enlargement of their π-electron system using a –C=C–Ar or –N=C–Ar moiety is enough for intrinsic solid-state luminescence enhancement (SLE) properties to appear. Their association with a variety of polyaromatic motifs leads to SLE-active molecules that frequently display attractive electroluminescent properties and are sensitive to mechanical stimuli. The excited-state intramolecular proton transfer (ESIPT) process that takes place in some hydroxy derivatives reinforces the SLE effect and enables the development of new sensors based on a protection/deprotection strategy. BZ may also be incorporated into frameworks that are prototypical aggregation-induced enhancement (AIE) luminogens, such as the popular tetraphenylethene (TPE), leading to materials with excellent optical and electroluminescent performance. This review encompasses the various ways to use BZ units in SLE systems. It underlines the significant progresses recently made in the understanding of the photophysical mechanisms involved. A brief overview of the synthesis shows that BZ units are robust building blocks, easily incorporated into a variety of structures. Generally speaking, we try to show how these small heterocycles may offer advantages for the design of increasingly efficient luminescent materials.

表现出固态发光增强的分子，即在固态中比在溶液中发射更强烈的罕见特性，在光电和纳米光子器件、传感器、证券纸、成像和治疗诊断学领域得到越来越多的应用. 苯唑 (BZ) 杂环在这方面具有特殊价值。使用–C=C–Ar 或–N=C–Ar 部分对其π 电子系统的简单放大足以使本征固态发光增强（SLE）特性出现。它们与各种多环芳烃基序的关联导致 SLE 活性分子经常显示出有吸引力的电致发光特性并对机械刺激敏感。在某些羟基衍生物中发生的激发态分子内质子转移 (ESIPT) 过程加强了 SLE 效应，并使基于保护/脱保护策略的新传感器的开发成为可能。BZ 还可以加入到典型的聚集诱导增强 (AIE) 发光原的框架中，例如流行的四苯乙烯 (TPE)，从而产生具有优异光学和电致发光性能的材料。本综述涵盖了在 SLE 系统中使用 BZ 单元的各种方法。它强调了最近在理解所涉及的光物理机制方面取得的重大进展。对合成的简要概述表明，BZ 单元是强大的构建块，可以轻松地合并到各种结构中。通常来说，一般来说，