Journal Article10.1039/C9TC04144C
Assembling semiconductor quantum dots in hierarchical photonic cellulose nanocrystal films: circularly polarized luminescent nanomaterials as optical coding labels
Mingcong Xu,Chunhui Ma,Jin Zhou,Yushan Liu,Xueyun Wu,Sha Luo,Wei Li,Haipeng Yu,Yonggui Wang,Zhijun Chen,Jian Li,Shouxin Liu +11 more
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TL;DR: In this paper, a co-assembly strategy of semiconductor quantum dots with circularly polarized luminescence (CPL) was proposed to design optoelectronic devices owing to easily tunable emission wavelengths and photophysical stability.
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Abstract: Exploring semiconductor quantum dots (QDs) with circularly polarized luminescence (CPL) is desirable to design optoelectronic devices owing to the easily tunable emission wavelengths and photophysical stability. In this study, through a co-assembly strategy, semiconductor QDs were encapsulated in cellulose nanocrystal (CNC)-based left-handed hierarchical photonic films, which resulted in circularly polarized luminescent nanomaterials with right-handed polarization, full-color tunable wavelengths, and tailored dissymmetry factors (glum). The CPL wavelength was manipulated by the emission wavelength of the semiconductor QDs. The photonic band gaps (PBGs) and handedness that spanned the visible spectrum were controlled by the glycerol content in the co-assembled photonic films. This enabled tunable CPL from the green-emitting QDs with a tailored maximum glum from −0.48 to −0.21, which is considerable for semiconductor nanomaterials. Based on the circularly polarized information in the ground state and excited state, CPL photonic films were developed as optical labels to encode and decode information.
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Citations
Frontiers in circularly polarized luminescence: molecular design, self-assembly, nanomaterials, and applications
Zhong-Liang Gong,Xuefeng Zhu,Zhonghao Zhou,Si-Wei Zhang,Dong Yang,Biao Zhao,Yi-Pin Zhang,Jianping Deng,Yixiang Cheng,You-Xuan Zheng,Shuang-Quan Zang,Hua Kuang,Pengfei Duan,Mingjian Yuan,Chuan-Feng Chen,Yong Sheng Zhao,Yu-Wu Zhong,Ben Zhong Tang,Ben Zhong Tang,Minghua Liu +19 more
TL;DR: The research in circularly polarized luminescence has attracted wide interest in recent years as mentioned in this paper, and the development of chiral emissive materials based on organic small molecules, compounds with aggregation-induced emissions, supramolecular assemblies, liquid crystals and liquids, polymers, metal-ligand coordination complexes and assemblies, metal clusters, inorganic nanomaterials, and photon upconversion systems.
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Designing Hybrid Chiral Photonic Films with Circularly Polarized Room-Temperature Phosphorescence.
Mingcong Xu,Xueyun Wu,Yang Yang,Chunhui Ma,Wei Li,Haipeng Yu,Zhijun Chen,Jian Li,Kai Zhang,Shouxin Liu +9 more
TL;DR: Doublet excitons produced by CDs were stable in the chiral photonic crystal environment, resulting in tunable right-handed CPRTP with long lifetimes up to 103 ms and large RTP dissymmetric factors (gRTP) up to -0.47.
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Electric-Field-Regulated Energy Transfer in Chiral Liquid Crystals for Enhancing Upconverted Circularly Polarized Luminescence through Steering the Photonic Bandgap.
TL;DR: Enhanced upconverted circularly polarized luminescent materials with high dissymmetry factor (UC-CPL) based on a radiative energy transfer (RET) process from UCNPs to CsPbBr3 PKNCs is successfully implemented.
158
Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence
TL;DR: A comprehensive overview of the state-of-the-art advances in liquid crystal-templated chiral nanomaterials can be found in this paper , where the fundamental design principles and bottom-up synthesis strategies are discussed.
Sequentially amplified circularly polarized ultraviolet luminescence for enantioselective photopolymerization.
TL;DR: A complex system, which show intense circularly polarized ultraviolet luminescence (CPUVL) with large glum value, enabling a chiral UV light triggered enantioselective polymerization and paves the way for the further development of functional application of CPL active materials.
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