纺织学报 ›› 2022, Vol. 43 ›› Issue (03): 50-57.doi: 10.13475/j.fzxb.20210107408

• 纤维材料 • 上一篇    下一篇

键合型高分子荧光纤维的制备及其荧光增强机制

张爱琴1,2,3(), 郝佳程1,3, 王芷1,3, 王永超1,3, 刘淑强1, 董海亮3, 贾虎生3, 许并社3   

  1. 1.太原理工大学 轻纺工程学院, 山西 太原 030006
    2.山西浙大新材料与化工研究院, 山西 太原 030024
    3.太原理工大学 新材料界面科学与工程教育部重点实验室, 山西 太原 030024
  • 收稿日期:2021-01-29 修回日期:2021-11-26 出版日期:2022-03-15 发布日期:2022-03-29
  • 作者简介:张爱琴(1974—),女,副教授,博士。主要研究方向为有机发光纤维与有机抗菌纤维的开发及应用。E-mail: zaq6014567@126.com。
  • 基金资助:
    国家自然科学基金项目(21972103);国家自然科学基金项目(61904120);山西省应用基础研究计划面上项目(201901D111111);山西省应用基础研究计划面上项目(201801D221124);山西浙大新材料与化工研究院研发项目(2021SX-AT010)

Preparation and fluorescence enhancement mechanism of bonded polymer fluorescence fibers

ZHANG Aiqin1,2,3(), HAO Jiacheng1,3, WANG Zhi1,3, WANG Yongchao1,3, LIU Shuqiang1, DONG Hailiang3, JIA Husheng3, XU Bingshe3   

  1. 1. College of Textile Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030006, China
    2. Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, Shanxi 030024, China
    3. Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
  • Received:2021-01-29 Revised:2021-11-26 Published:2022-03-15 Online:2022-03-29

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摘要：

为进一步提高键合型高分子荧光粉的发光效率,采用先配合再聚合的技术路线,将稀土配合物Tb(4-BBA)3(4-VP)2与N-乙烯基咔唑(NVK)和甲基丙烯酸甲酯(MMA)共聚,制得键合型高分子荧光粉poly(MMA-co-Tb(4-BBA)3(4-VP)2-co-NVK),然后采用静电纺丝方法制备绿光荧光纤维,并对其结构和性能进行表征。结果表明:不同质量分数稀土配合物的荧光纤维在365 nm波长光激发下均表现出明亮绿光发射,纤维表面光滑且直径均匀,其发光强度及微观形貌随配合物质量分数的变化趋势一致,在纤维微观形貌与发光强度之间建立了关联;当稀土配合物质量分数为14%时,纤维发光强度最大,比相应荧光粉提高了1.6倍;用静电纺纤维膜制备的LED器件亮度达24 390 cd/m2,是传统涂膜法的2.6倍。

关键词: 铽, 荧光粉, 静电纺丝, 荧光纤维, 荧光增强机制

Abstract:

In order to further improve the luminescence efficiency of bonded terbium polymer phosphors, the bonded phosphors poly(MMA-co-Tb(4-BBA)3(4-VP)2-co-NVK) were prepared by copolymerization with the complex Tb(4-BBA)3(4-VP)2, N-vinylcarbazole (NVK) and methyl methacrylate (MMA) employing the technology of pre-coordination and post-polymerization, and the corresponding green fluorescence fibers were prepared by electrospinning. The structure and properties of the phosphors and fibers were characterized. The results exhibit that the fluorescence fibers with different content of the complex Tb(4-BBA)3(4-VP)2 show bright green emission excited by light with 365 nm wave length. The fibers have smooth surface and uniform diameter. The fluorescenct intensity and micro-morphology of the fluorescence fibers in the same trend as the complex content, which establishes the internal relationship between the micro-morphology and fluorescent intensity of fibers. The fluorescent intensity of the fibers is 1.6 times higher than that of the corresponding phosphors, reaching the maximum at 14% of the complex Tb(4-BBA)3(4-VP)2 content. The brightness of LED devices fabricated with nanofiber membrane reaches 24 390 cd/m2, which is 2.6 times that of LEDs made using the conventional coating methods.

Key words: terbium, phoshor, electrospinning, fluorescence fiber, fluorescence enhancement mechanism

中图分类号: 

  • TQ342.8

图1

键合型聚合物荧光粉PMNTb的合成路线"

图2

键合型高分子荧光粉和稀土配合物的红外光谱图"

图3

稀土配合物与键合型高分子荧光粉的紫外-可见吸收光谱图"

图4

纺丝液质量分数对F-PMN基质纤维微观形貌的影响"

图5

稀土配合物质量分数对键合型荧光纤维微观形貌的影响"

图6

键合型荧光纤维直径与稀土配合物质量分数的关系"

图7

键合型高分子荧光粉及其荧光纤维的TG-DTG曲线"

图8

不同稀土配合物质量分数键合型高分子荧光纤维的荧光发射谱及其发光强度随配合物质量分数的变化"

图9

键合型高分子荧光粉及其荧光纤维的荧光发射谱"

图10

键合型高分子荧光纤维的荧光增强机制"

图11

键合型高分子荧光粉及其荧光纤维的荧光衰减曲线"

图12

FM-LED、ETFM-LED、EQFM-LED的电致发光光谱及其CIE色坐标图和亮度-电压曲线"

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