手性超分子组装圆偏振室温磷光材料的研究进展

Research Progress of Circularly Polarized Room-temperature Phosphorescent Materials based on Chiral Supramolecular Assembly

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摘要圆偏振室温磷光(CP-RTP)材料因其优异的光学灵敏度和空间分辨率,在三维显示、防伪和信息存储等领域展现出广泛的应用潜力.然而,提升CP-RTP材料的发光不对称因子(g_(lum))依然面临挑战.近年来,研究者们发现手性超分子组装策略能够提供高阶有序的排列方式,从而有利于实现更高的g_(lum)值.分析了手性超分子组装体系中螺旋结构对材料光物理性质的影响,总结了近年来手性超分子室温磷光材料的研究进展及其在信息加密和安全防伪等领域的应用. Circularly polarized room-temperature phosphorescence(CP-RTP)materials have garnered significant attention due to their exceptional optical sensitivity and spatial resolution,making them highly promising for a wide array of applications,such as three-dimensional displays,anti-counterfeiting,and information storage.Generally,the polarization magnitude is quantified by the luminescence dissymmetry factor(g_(lum)),which has a value between-2 and 2.However,while chiral organic RTP materials often demonstrate higher luminous efficiency,they typically display remarkably low g_(lum)values,generally in the order of 10^(-5)to 10^(-3),owing to their inherently weak magnetic transition dipole moment.This limitation significantly hinders the practical application of high-performance CP-RTP materials.Therefore,enhancing the g_(lum)values of CP-RTP materials remains a substantial challenge.With the rapid advancement of chiral supramolecular assembly,researchers have discovered that this system can construct long-range ordered helical nanostructures by precisely regulating intermolecular interactions,such asπ-πstacking and hydrogen bonding.This approach facilitates the attainment of a high g_(lum)value while maintaining favorable luminous efficiency.Meanwhile,the processes of chiral self-assembly or co-assembly frequently involve chiral transfer,chiral induction,and intermolecular Förster resonance energy transfer.These processes are advantageous for inducing achiral dyes to achieve CP-RTP.This dramatically simplifies the synthesis of CP-RTP materials,circumventing the often-complex and costly preparation of intrinsically chiral RTP chromophores.Consequently,chiral supramolecular assembly systems have emerged as a highly effective strategy for the development of CP-RTP materials exhibiting substantially improved g_(lum)values.This review comprehensively examines the influence of helical structures on the photophysical properties of chiral supramolecular assembly systems,summarizing recent progress in the design,synthesis,and application of chiral supramolecular RTP materials,with a particular focus on their exploitation in advanced information encryption and anti-counterfeiting technologies.We delve into the underlying mechanisms driving enhanced circular polarization and discuss future directions for this rapidly evolving field.

作者潘禹州殷炜杰张雨霞 Pan Yuzhou;Yin Weijie;Zhang Yuxia(Institute of Advanced Materials/School of Materials Science and Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210000)

机构地区南京邮电大学信息材料与纳米技术研究院/材料科学与工程学院

出处《化学学报》北大核心 2025年第6期639-654,共16页 Acta Chimica Sinica

基金国家自然科学基金(No.62305172) 江苏省高校自然科学基金(No.23KJB430026) 南京邮电大学人才引进自然科学研究启动基金(No.NY223052)资助。

关键词手性超分子组装圆偏振发光室温磷光圆偏振发光不对称因子分子间相互作用液晶 chiral supramolecular assembly circularly polarized luminescence room temperature phosphorescence circular polarization luminescence dissymmetry factor intermolecular interactions liquid crystal

分类号 O641.3 [理学—物理化学] TB34 [一般工业技术—材料科学与工程]

作者简介张雨霞,E-mail:iamyxzhang@njupt.edu.cn。