有机化学 ›› 2025, Vol. 45 ›› Issue (4): 1261-1267.DOI: 10.6023/cjoc202409005 上一篇    下一篇

研究论文

9-芴基甲氧基羰基-酪氨酸掺杂聚乙烯醇室温磷光薄膜性质研究

高玉兰a, 龙江琴b, 王秋生b,*()   

  1. a 上海熠品质量技术服务有限公司天津分公司 天津 300392
    b 天津理工大学化学化工学院 天津 300384
  • 收稿日期:2024-09-03 修回日期:2024-10-21 发布日期:2024-11-27
  • 基金资助:
    国家自然科学基金(21777113)

Properties Research of Poly(vinyl alcohol) Phosphorescent Films Doped with 9-Fluorenyl Methoxycarbonyl-Tyrosine at Room Temperature

Yulan Gaoa, Jiangqin Longb, Qiusheng Wangb()   

  1. a EPINTEK Shanghai Ltd. Shanghai EPINTEK Quality Technical Service Co., Ltd. (Tianjin Branch), Tianjin 300392
    b School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384
  • Received:2024-09-03 Revised:2024-10-21 Published:2024-11-27
  • Contact: * E-mail: wangqsh@tjut.edu.cn
  • Supported by:
    National Natural Science Foundation of China(21777113)

室温磷光(Room Temperature Phosphorescence, RTP)材料在信息加密、光学传感、生物成像、信息存储等方面具有十分广阔的应用前景, 然而有机材料在室温条件下实现长寿命、高效率的磷光一直面临诸多挑战性, 这主要是由于环境条件下有机分子的磷光发射经常会被强烈的非辐射跃迁、低效的系间穿越、氧气等因素的淬灭所阻碍. 本研究主要使用掺杂聚合物基质这一策略实现了长寿命室温磷光发射, 所制备的两种9-芴基甲氧基羰基(Fmoc)-酪氨酸@PVA薄膜在275 nm的紫外光源照射后产生寿命大于4000 ms的磷光发射和持续时间长达41 s的蓝色余辉. 进一步在体系中掺杂染料分子罗丹明B, 通过Förster共振能量转移(Förster-resonance energy-transfer, FRET)过程实现对薄膜余辉发光颜色的调节.

关键词: 酪氨酸, 室温磷光, 聚乙烯醇, 共振能量转移

Room temperature phosphorescent (RTP) materials have broad application prospects in information encryption, optical sensing, biological imaging, information storage and so on. However, the realization of long-lived, high-efficiency phosphorescence in organic materials at room temperature represents a challenge, largely because the phosphorescence emission of organic molecules under ambient conditions is often hindered by intensive non-radiative transitions, inefficient intersystem crossing, and quenching of oxygen. In this study, the doped polymer matrix strategy was mainly used to achieve long-life room temperature phosphorescence emission. Two kinds of 9-fluorenyl methoxycarbonyl (Fmoc)-Tyrosine@PVA films prepared can produce phosphorescence emission with a lifetime of more than 4000 ms and blue afterglow with a long duration of 41 s after irradiation by 275 nm ultraviolet light source. Furthermore, Rhodamine B, a dye molecule, was doped in the system to adjust the color of the doped films by Förster-resonance energy transfer process.

Key words: tyrosine, room temperature phosphorescence, polyvinyl alcohol, resonance energy transfer