Organic room-temperature phosphorescence (RTP) materials have garnered extensive attention owing to their long-lived excited states, low cost, good processability, and promising applications in domains such as anti-counterfeiting and information encryption, afterglow displays, biological imaging, and sensing. However, most current organic RTP materials are derived from artificial phosphors and petroleum-based polymers, hindering their practical applications owing to issues such as complicated synthesis and purification procedures, poor colour tunability, and lack of renewability and sustainability. Fortunately, the conversion of natural polysaccharides to RTP materials can address the issues. In this review, we summarize the recent advancements in natural polysaccharide-based RTP materials, including their design principles, underlying mechanisms, advanced luminescence characteristics, and potential applications. Special emphasis is placed on representative natural polysaccharide-based RTP systems exhibiting remarkable properties rarely observed in artificial phosphors. The discussion also focuses on intrinsic structure–performance relationships and outlines key challenges and perspectives for future development in this intriguing field. Overall, this review aims to detail guidelines and provide inspiration for the development of eco-friendly polysaccharide-based RTP materials, shedding new light on the high-value utilization of natural polysaccharides.

中文翻译：

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天然多糖基室温磷光材料：设计、性能和应用


有机室温磷光 （RTP） 材料因其长寿命激发态、低成本、良好的加工性能以及在防伪和信息加密、余辉显示、生物成像和传感等领域的良好应用而受到广泛关注。然而，目前的大多数有机 RTP 材料都是来自人造荧光粉和石油基聚合物，由于合成和纯化程序复杂、颜色可调性差以及缺乏可再生性和可持续性等问题，阻碍了它们的实际应用。幸运的是，将天然多糖转化为 RTP 材料可以解决这些问题。本文总结了天然多糖基RTP材料的最新进展，包括其设计原理、基本机制、高级发光特性和潜在应用。特别强调具有代表性的基于天然多糖的 RTP 系统，该系统表现出在人工荧光粉中很少观察到的显着特性。讨论还侧重于内在结构-性能关系，并概述了这一有趣领域未来发展的关键挑战和前景。总体而言，本综述旨在详细阐述指南并为开发基于生态多糖的 RTP 材料提供灵感，为天然多糖的高值化利用提供新的思路。