Department of Chemistry, UGC Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, India.
Anal Methods. 2020 Jul 28;12(28):3560-3574. doi: 10.1039/d0ay00966k. Epub 2020 Jul 6.
Perylene diimides (PDI) are a well-studied class of functional organic dyes, and in recent years, they have been accepted as promising scaffolds for the design of small molecule/polymer-based chromogenic and fluorogenic reaction-based-probes because of their strong absorption combined with high fluorescence quantum yield in organic solvents, low reduction potential, good electron-acceptor properties, and broad color range properties. Undoubtedly, the intrinsically poor solubility of PDI-based derivatives in water greatly hampers their exploitation as reaction-based probes; however, a vast array of functionalizations now offer design strategies that have resulted in >50% solubility of PDI derivatives in water. A chemodosimeter, wherein chemical transformation is achieved by specific reactions, affords naked-eye visibility, fast response time, sensitivity, ratiometric response, and low cost. The present review focuses on the progress of PDI-based chemodosimeters achieved so far since the inception of this member in the rylene diimide family. This comprehensive review may facilitate the development of more powerful chemodosimeters based on PDI for broad and exciting applications in the future.
并苯二酰亚胺（PDI）是一类经过深入研究的功能有机染料，近年来，由于其在有机溶剂中具有较强的吸收和高荧光量子产率、较低的还原电位、良好的电子受体性质以及较宽的颜色范围性质，它们已被接受为小分子/聚合物基显色和荧光反应型探针设计的有前途的支架。毫无疑问，基于 PDI 的衍生物在水中的固有低溶解度极大地阻碍了它们作为反应型探针的开发；然而，现在有大量的功能化提供了设计策略，使 PDI 衍生物在水中的溶解度达到了 >50%。化学转化通过特定反应实现的化学计量比传感器提供了肉眼可见性、快速响应时间、灵敏度、比率响应和低成本。本综述重点介绍了自该家族成员出现以来基于 PDI 的化学计量比传感器所取得的进展。这篇全面的综述可能有助于开发更强大的基于 PDI 的化学计量比传感器，以在未来实现更广泛和令人兴奋的应用。
