Thermo-responsive circularly polarized luminescence from carbon quantum dots in a cellulose-based chiral nematic template

Shi, Haidong1; Zhu, Jiaxin2; Deng, Yaxuan1; Yang, Yanling1; Wang, Changxing1; Liu, Yihan1; Zhang, Wanlong3; Luo, Dan2; Chen, Da1; Shi, Yue1

2024-06-01

10.1515/nanoph-2024-0091

NANOPHOTONICS   影响因子和分区

2192-8606

2192-8614

Circularly polarized light emitting active materials are of great interest, and the convenient tuning of the circularly polarized luminescence (CPL) remains a significant challenge. Integrating fluorescent materials into chiral photonic crystals to achieve tunable CPL is a promising approach, allowing efficient manipulation of CPL by adjusting the photonic band gap (PBG). We combined carbon quantum dots (CQDs) with hydroxypropyl cellulose (HPC), which self-assembles into a cholesteric liquid crystal (CLC). The helical structure can selectively reflect right circularly polarized (RCP) light, achieving strong circular dichroism (CD) and high CPL dissymmetry factor g lum. In addition, the chiral template is thermo-responsive. The CPL wavelength can be adjusted by regulating the PBG position through temperature adjustment, while the chirality of CPL keeps high especially in the heating process. This work enables stimuli-responsive manipulation of CPL under one template through temperature regulation, which may open up enormous possibilities for the cellulose-based material in different areas.

circularly polarized luminescence cholesteric liquid crystal thermo-responsive hydroxypropyl cellulose carbon quantum dot

SCI ; EI

英语

通讯

Science & Technology - Other Topics ; Materials Science ; Optics ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Optics ; Physics, Applied

WOS:001235862100001

WALTER DE GRUYTER GMBH

Web of Science

1.Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Zhejiang, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Shenzhen Univ, Inst Microscale Optoelect, Nanophoton Res Ctr, Shenzhen 518060, Guangdong, Peoples R China

Shi, Haidong,Zhu, Jiaxin,Deng, Yaxuan,et al. Thermo-responsive circularly polarized luminescence from carbon quantum dots in a cellulose-based chiral nematic template[J]. NANOPHOTONICS,2024.

Shi, Haidong.,Zhu, Jiaxin.,Deng, Yaxuan.,Yang, Yanling.,Wang, Changxing.,...&Shi, Yue.(2024).Thermo-responsive circularly polarized luminescence from carbon quantum dots in a cellulose-based chiral nematic template.NANOPHOTONICS.

Shi, Haidong,et al."Thermo-responsive circularly polarized luminescence from carbon quantum dots in a cellulose-based chiral nematic template".NANOPHOTONICS (2024).