高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (5): 1120-1126.doi: 10.7503/cjcu20190635

• 材料化学 • 上一篇    

晶态纳米纤维素的多色圆偏振荧光性能

赵子一,郑洪芝,徐雁()   

  1. 吉林大学无机合成与制备化学国家重点实验室, 长春 130012
  • 收稿日期:2019-12-09 出版日期:2020-05-10 发布日期:2020-01-06
  • 通讯作者: 徐雁 E-mail:yanxu@jlu.edu.cn
  • 基金资助:
    国家自然科学基金(21671079);国家自然科学基金(21975095);高等学校学科创新引智计划项目(B17020)

Multi-color Circularly Polarized Luminescence Properties of Cellulose Nanocrystal

ZHAO Ziyi,ZHENG Hongzhi,XU Yan()   

  1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China
  • Received:2019-12-09 Online:2020-05-10 Published:2020-01-06
  • Contact: Yan XU E-mail:yanxu@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(21671079);† Supported by the National Natural Science Foundation of China(21975095);the “111” Project of China(B17020)

摘要:

基于晶态纳米纤维素禁带效应的圆偏振荧光能力, 分别采用混合悬浮液法及多层膜叠加法拓宽了晶态纳米纤维素膜的禁带, 使其禁带覆盖可见光范围, 通过掺杂多色荧光体, 该膜可以将自发辐射转换为高强度、 右旋、 多色的圆偏振荧光信号.

关键词: 晶态纳米纤维素, 手性向列有序性, 光子禁带, 圆偏振荧光, 多色

Abstract:

Multi-color circularly polarized luminescence with high luminescence dissymmetry(glum) factors is key in photonic technologies. Leveraging on the intrinsic circular polarization ability of cellulose nanocrystals(CNC), we demonstrate that mixing of CNC suspensions, which are supersonically treated for a different period of time, provides an effective approach to produce freestanding CNC films with a broad photonic bandgap that can effectively transform spontaneous emissions to multicolor right-handed CPL signals with high glum. We also show that lamination of multiple CNC-CdSe/ZnS films affords an easy approach to broaden photonic bangdap and ability to produce multicolor circularly polarized luminescence with high glum.

Key words: Cellulose nanocrystal, Chiral nematic order, Photonic bandgap, Circularly polarized luminescence, Multi-color

中图分类号: