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有机室温磷光材料因其独特的光学性能和广阔的应用前景而备受关注。文章将含咔唑发色团的离子液体单体与丙烯酰胺共聚，设计合成了一种结构独特且具有蓝色余辉的二元离子液体共聚物。当摩尔比优化为1%时，该共聚物的磷光寿命可达2.15 s，量子产率高达23.00%。在此基础上，以该离子液体共聚物为能量给体，商用有机染料荧光素钠、罗丹明6G和罗丹明B为能量受体，采用电子从给体三线态到受体单线态的荧光共振能量转移策略，通过调节不同染料的掺杂比例，实现了从蓝色到黄绿色再到玫红色的全色可调余辉发射。该共聚物体系具有良好的水溶性和优异的可加工性，合成简单、可大量制备，在信息加密与防伪领域具有广阔的应用前景。
Abstract：Organic room-temperature phosphorescent materials have attracted much attention due to their unique optical properties and broad application prospects. In this paper, a binary ionic liquid copolymer with a unique structure and blue afterglow was designed and synthesized by copolymerizing an ionic liquid monomer containing a carbazole chromophore with acrylamide. When the molar ratio was optimized to 1%, the phosphorescence lifetime of the copolymer could reach 2.15 s, and the quantum yield was as high as 23.00%. On this basis, using this ionic liquid copolymer as the energy donor and commercial organic dyes sodium fluorescein, rhodamine 6G and rhodamine B as the energy acceptors, the fluorescence resonance energy transfer strategy from the donor's triplet state to the acceptor's singlet state was adopted. By adjusting the doping ratio of different dyes, the full-color tunable afterglow emission from blue to yellow-green and then to rose red was achieved. This copolymer system has good water solubility and excellent processability, is simple to synthesize and can be prepared in large quantities, and has broad application prospects in the fields of information encryption and anticounterfeiting.
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基本信息:
DOI：10.16026/j.cnki.iea.2025060464
中图分类号:TB34
引用信息:
[1]薛芳芳,何秋婷,齐玉,等.离子液体共聚物室温磷光材料的设计制备及性能研究[J].离子交换与吸附,2025,41(06):464-472.DOI:10.16026/j.cnki.iea.2025060464.
基金信息:
国家自然科学基金面上项目(项目号52373008)