6–氨基异喹啉的荧光增强及在白光膜中的应用
2024-07-08刘颖蔡斌
刘颖 蔡斌



摘要:有机发光二极管(organic light-emitting diode ,OLED)在新一代的照明、显示等领域有着广阔的应用前景。在 OLED 的制备中,蓝色荧光染料起着不可或缺的作用。使用苯磺酸(benzenesulfonic acid ,BSA)将蓝色荧光染料6?氨基异喹啉(6-aminoisoquinoline ,6-AIQ)质子化改性为6-AIQ-BSA,使其荧光量子效率从64.71%上升至85.84%。为制备高效的白光薄膜,利用桶状分子羟丙基?β?环糊精(hydroxypropyl-β-cyclodextrin ,HP-β-CD)对6-AIQ-BSA 实施了超分子包覆,以降低高浓度下荧光猝灭现象。实验表明,将6-AIQ-BSA @ HP-β-CD 与橙光染料 DAST@ HP-β-CD 以1.7∶1比例混合可以实现白光发射,其 CIE 色坐标为(0.3324,0.3284)。该混合物薄膜具有白光性好,轻量和柔软等特点,在柔性发光器件中有着广阔的应用潜力。
关键词:质子化;超分子;有机荧光薄膜;6–氨基异喹啉;环糊精
中图分类号: TN 244 文献标志码: A
Fluorescence enhancement of 6-aminoisoquinoline and its application in white light film
LIU Ying ,CAI Bin
(School of Optical-Electrical and Computer Engineering, University of Shanghai forScience and Technology, Shanghai 200093)
Abstract: Organic light-emitting diode (OLED) has important applications in the next generation of lighting, displays and related fields. Blue fluorescent dyes are essential for the fabrication of OLED. In thisstudy, by protonatinga bluefluorescentdye 6-aminoisoquinoline (6-AIQ) with benzenesulfonicacid (BSA),thefluorescencequantumyieldwassuccessfullyincreasedfrom 64.71% to 85.84%. The 6-AIQ-BSA was further inserted into a barrel-shaped hydroxypropyl-β- cyclodextrin (HP-β-CD) moleculetoformasupramolecularstructure,whichcouldreducethe fluorescence quenching at high concentrations. Experiments showed that white light emission could be achieved by mixing the 6-AIQ-BSA@HP-β-CD with orange light dye DAST@ HP-β-CD in a ratio of 1.7 to 1, and its CIE color coordinates were (0.3324, 0.3284). The prepared film has thecharacteristics of good white light emission, lightweight, and flexibility, which makes it has broad application potential in various light-emitting devices.
Keywords:protonation;supramolecule;organicfluorescent film; 6-aminoisoquinoline; cyclodextrin
引言
蓝色发光染料是有机发光二极管(organiclight-emitting diodes ,OLED)显示器的重要组成部分,它们的发光效率和稳定性对 OLED 显示器的画质和寿命有很大的影响[1]。由于制造高效、长寿命的蓝色发光材料相对困难,而且它们的性能容易受到环境和制造工艺的影响[2],因此,蓝色发光材料的改进一直是 OLED 技术的研究重点之一。喹啉类化合物是一种非常重要的含氮的杂环化合物,是多环氮杂芳烃化合物的合成中间体。由于其具有低生物毒性和适合的水/油溶解性等特点而被广泛应用于生物医药领域。除了生物学意义外,其在化学反应性、热稳定性、发射能力、电荷转移特性和其他化学变化方面的性能,使其经常被用于光电子学领域[3-7]。喹啉/异喹啉虽然具有刚性的π电子共轭结构,能够发射蓝色的荧光,但其荧光发光效率一般不超过1%[8]。……
