Page 75 - 《精细化工》2022年第12期
P. 75
第 39 卷第 12 期 精 细 化 工 Vol.39, No.12
2 022 年 12 月 FINE CHEMICALS Dec. 2022
功能材料
蛭石超分子组装有机无机荧光薄膜
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尤厚美,赵可心,谢莹莹,张祥坤,朱宝林,田维亮
(塔里木大学 化学化工学院,新疆 阿拉尔 843300)
摘要:基于有机荧光染料固体易于团聚和堆叠导致荧光猝灭和发光与稳定性降低,采用剥离与超分子组装的方
法制备固体荧光超薄膜发光体。首先通过剪切剥离制备蛭石纳米片,控制其粒径分布在 30~300 nm,再通过层
层超分子组装的方法与有机荧光染料(罗丹明 6G 和罗丹明 B)组装,获得蛭石有机无机荧光薄膜。对比实验发
现,不添加蛭石纳米片,无法获得均匀发光的荧光薄膜。蛭石有机无机荧光薄膜的 SEM 显示,薄膜中有机荧光
染料和蛭石分布均匀,克服了有机荧光染料团聚或者堆叠引起的荧光猝灭,实现了荧光亮度可控。
关键词:蛭石;有机荧光染料;超分子组装;固体发光;荧光薄膜;功能材料
中图分类号:O484; TB34; TQ422 文献标识码:A 文章编号:1003-5214 (2022) 12-2441-08
Organic-inorganic fluorescent films formed by layered
vermiculite supramolecular assembly
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YOU Houmei, ZHAO Kexin, XIE Yingying, ZHANG Xiangkun, ZHU Baolin, TIAN Weiliang
(College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, Xinjiang, China)
Abstract: Since agglomeration or stacking of organic fluorescent dyes leads to fluorescence quenching,
weakened luminescence and stability, solid luminous fluorescent ultrathin films were prepared by stripping
and supramolecular assembly in the current study. Organic-inorganic fluorescent films were synthesized via
layer-by-layer supramolecular assembly of vermiculite nanosheets, which was prepared by shear stripping
and with a with particle size distribution controlled at 30~300 nm, with organic fluorescent dyes
(Rhodamine 6G and Rhodamine B). Comparative experiments showed that uniform luminescent fluorescent
film could not be obtained without the addition of vermiculite nanosheets. Moreover, SEM characterization
revealed that organic fluorescent dyes and vermiculite nanosheets in the film were uniformly distributed,
which overcame the fluorescence quenching caused by aggregation or stacking and achieved controllable
fluorescence brightness.
Key words: vermiculite; organic fluorescent dyes; supramolecular assembly; luminescence of solid;
fluorescent film; functional materials
荧光材料是制备先进功能材料的重要组成部 光电器件。因此,如何避免有机荧光染料分布不均,
分,广泛应用于传感器、荧光探针、显示器、红外 克服有机荧光染料固体状态荧光猝灭是提高固态发
光探测器、发射器等领域。但有机荧光染料固体由 光材料发光效率的关键。
于分子间 π-π 作用或非辐射能量转移形成稳定的缔 层状材料由于特殊的层状结构和纳米效应,可
合物或复合物消耗了激发态能量,易于聚集导致荧 以为光功能材料提供一个稳定的环境,将光功能材
光红移、荧光急剧减弱甚至猝灭 [1-5] ,且光热稳定性 料结合到层状材料中可以提升其光热稳定性,在分
较差、粉体发光及分布不均匀,无法应用于实际的 子水平上实现有机荧光染料的均匀分布,抑制其聚
收稿日期:2022-04-03; 定用日期:2022-07-04; DOI: 10.13550/j.jxhg.20220310
基金项目:国家自然科学基金(21761029);新疆建设兵团中青年科技创新领军人才项目(2020CB019);新疆兵团一师阿拉尔科技计划
项目(2019GJJ04);创新群体项目(TDZKCQ201901);人才支持项目-兵团英才田维亮(2021)
作者简介:尤厚美(1995—),女,硕士生,E-mail:youhoumei061963@163.com。联系人:田维亮(1977—),男,教授,E-mail:
twllong@126.com。