ACC共掺杂的PVA有机室温磷光材料的制备及研究

Fabrication and Investigation of ACC-Doped PVA Organic Room-Temperature Phosphorescent Materials

摘要

近年来,有机室温磷光(ORTP)材料因其长寿命发光特性在光电器件、生物传感器和信息安全领域展现出广阔应用前景．因此,针对现有有机室温磷光材料激发光波长局限于短波长的问题,本研究提出了一种通过荧光共振能量转移的方法．该方法以聚乙烯醇(PVA)为基质,将双光子分子7-氨基-4-羧甲基香豆素(ACC)的能量转移至9,10-二氨基菲(DAphe)、吖啶黄、吖啶橙和5-氨基萘-2-磺酸磷光分子中,其中ACC＋DAphe@PVA实现了ORTP长波长激发(激发波长为780 nm),磷光寿命最长可达0.8 s,反斯托克斯位移为250 nm．借助密度泛函理论模拟和静电势分布探究了能量转移机理．研究结果为开发具有上转换性能的高性能余辉掺杂型材料提供了重要参考．

Abstract

In recent years,organic room-temperature phosphorescent(ORTP)materials have been widely used in optoelectronic devices,biosensors,and information security owing to their long-lifetime luminescence. However,the excitation wavelengths of existing ORTP materials are confined to the short-wavelength region. To address this limitation,a fluorescence resonance energy transfer(FRET) strategy is proposed to transfer energy from the two-photon molecule 7-amino-4-carboxymethylcoumarin(ACC) to phosphorescent molecular systems(9,10-diaminophenanthrene(DAphe),acriflavine,acridine orange,and 5-aminonaphthalene-2-sulfonic acid)using polyvinyl alcohol (PVA) as the matrix. The ACC+DAphe@PVA enables achieving long-wavelength excitation(780 nm)for ORTP emission,with the longest phosphorescence lifetime reaching 0.8 s and an anti-Stokes shift of 250 nm. Density functional theory simulations and electrostatic potential distribution analyses were employed to elucidate the energy transfer mechanism. These findings will guide the development of high-performance,afterglow-doped materials with upconversion luminescence capabilities.

关键词

有机室温磷光 / 上转换 / 能量转移 / 长波长激发

Key words

organic room-temperature phosphorescence(ORTP) / upconversion / energy transfer / long-wavelength excitation

参考文献

[1] Mallesham G, Vinod A K, Rajadurai C. Room—temperature phosphorescent organic materials for optical waveguides[J]. Journal of Materials Chemistry, 2021, 9(40):14115-14132.

[2] Rui H W, Gang X Y, Hua J Q, et al. Long—lived room temperature phosphorescence of organic—inorganic hybrid systems[J]. Inorganic Chemistry Frontiers, 2021, 8(8):1942-1950.

[3] Wei X Y, Yang J W, Hu L L, et al. Recent advances in room temperature phosphorescent carbon dots:Preparation,mechanism,and applications[J]. Journal of Materials Chemistry, 2021, 9(13):4425-4443.

[4] Wang W Z, Zhang Y, Jin J W. Halogen bonding in room—temperature phosphorescent materials[J]. Coordination Chemistry Reviews, 2020, 404:213107.

[5] 丁梅鹃, 史慧芳, 安众福. 有机室温磷光材料在生物医学中的应用[J]. 材料导报, 2022, 36(3):22010004.

[6] Ding Meijuan, Shi Huifang, An Zhongfu. Organic room temperature phosphorescent materials for biomedical applications[J]. Materials Reports, 2022, 36(3):22010004(in Chinese).

[7] 黄睿琦, 潘梅, 苏成勇. 基于超分子作用设计余辉材料的策略、应用与最新进展[J]. 中国科学:化学, 2024, 54(9):1488-1505.

[8] Huang Ruiqi, Pan Mei, Su Chengyong. Design strategies,applications and recent advances of afterglow materials based on supramolecular interactions[J]. Scientia Sinica Chimica, 2024, 54(9):1488-1505(in Chinese).

[9] 孙静, 马会利, 安众福, 等 . 高分子长余辉发光材料研究进展[J]. 发光学报, 2020, 41(12):1490-1503.

[10] Sun Jing , Ma Huili , An Zhongfu , et al. Recent development of polymers with long—lived persistent luminescence[J]. Chinese Journal of Luminescence, 2020, 41(12):1490-1503(in Chinese).

[11] Kaláb P, Soderholm J. The design of Förster (fluorescence)resonance energy transfer(FRET)—based molecular sensors for Ran GTPase[J]. Methods, 2010, 51(2):220-232.

[12] Loura L M S, Fernandes F, Prieto M. Membrane microheterogeneity:Förster resonance energy transfer characterization of lateral membrane domains[J]. European Biophysics Journal, 2010, 39:589-607.

[13] Shen Z Y, Yan X L, Cui S Q, et al. Color—tunable,time—dependent,temperature and humidity—responsive afterglow from hyaluronic acid—based films[J]. Dyes and Pigments, 2023, 212:111113.

基金资助

国家自然科学基金资助项目(21978208)

天津市自然科学基金资助项目(22JCZDJC00300)