Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (5): 1120.doi: 10.7503/cjcu20190635

• Material Chemistry • Previous Articles    

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)

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

CLC Number: 

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