Organic room-temperature phosphorescence (RTP) materials have garnered significant attention for their potential applications in anticounterfeiting authentication and bioimaging, due to their large Stokes shift and prolonged phosphorescence lifetime. However, the traditional RTP materials often suffer from drawbacks such as a complex preparation process and poor biocompatibility due to the presence of aromatic structures. In this study, we present a series of nontraditional intrinsic clusteroluminescent materials that exhibit RTP by introducing the concerted interactions of strong multiple ionic bonds and hydrogen bonds (H-bonds). A class of poly(maleic anhydride-alt-vinyl acetate) (PMV) derivatives with phosphorescence emission are obtained by hydrolysis of PMV. On the basis of these experiments, poly(maleic anhydride-acrylamide) (PMA) derivatives were prepared with a maximum phosphorescence lifetime of 442 ms and a quantum yield of 21% utilizing hydrogen bonding in the amide groups and ionic bonding induced by alcoholysis under alkaline conditions. The findings reveal that the strategic introduction of ionic bonds promotes conformational rigidification, while robust H-bonds further restrict molecular motion, thereby minimizing nonradiative decay pathways and leading to efficient RTP. Information encryption and humidity detection based on this material have been proven with its unique and sensitive water response properties.

中文翻译：

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具有可调簇发光和长寿命室温磷光的非芳香族聚合物


有机室温磷光 （RTP） 材料因其在防伪鉴定和生物成像中的潜在应用而受到广泛关注，因为它们具有较大的斯托克斯位移和延长的磷光寿命。然而，由于芳香族结构的存在，传统的 RTP 材料往往存在制备工艺复杂、生物相容性差等缺点。在这项研究中，我们提出了一系列非传统的本征簇发光材料，这些材料通过引入强多重离子键和氢键（H 键）的协同相互作用来表现出 RTP。通过水解 PMV 获得一类具有磷光发射的聚（马来酸酐-alt-醋酸乙烯酯）（PMV） 衍生物。在这些实验的基础上，利用酰胺基团中的氢键和碱性条件下醇解诱导的离子键，制备了聚（马来酸酐-丙烯酰胺）（PMA）衍生物，其最大磷光寿命为 442 ms，量子产率为 21%。研究结果表明，离子键的战略引入促进了构象刚性化，而强大的 H 键进一步限制了分子运动，从而最大限度地减少了非辐射衰变途径并导致高效的 RTP。基于这种材料的信息加密和湿度检测已证明其独特而灵敏的水响应特性。