Switchable circular polarized phosphorescence enabled by cholesteric assembled nanocelluloses

Wang, Xi; Miao, Qing; Zhang, Wenjing; Zhou, Yi; Xiong, Rui; Duan, Yingying; Meng, Xiao; Ye, Chunhong

doi:10.1016/j.cej.2023.148463

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…In contrast to the conventional physical method using a quarter waveplate and linear polarizer, the direct generation of circularly polarized light by CPL materials offers advantages such as eliminating the need for complex devices and avoiding energy loss during the conversion process. 1,2 Recently, CPL materials have garnered significant attention due to their diverse applications in information storage/encryption, 3–6 display devices, 7–10 chiral sensing, 11–13 and more. To successfully obtain CPL-active materials, a chiral component and luminescent component are two necessary elements of the system.…”

Section: Introductionmentioning

confidence: 99%

Helical columnar phase of mesogen-jacketed liquid crystal polymers for efficient circularly polarized luminescence

Liu,

Deng,

Fan

et al. 2024

J. Mater. Chem. C

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Section: Introductionmentioning

confidence: 99%

Helical columnar phase of mesogen-jacketed liquid crystal polymers for efficient circularly polarized luminescence

Liu,

Deng,

Fan

et al. 2024

J. Mater. Chem. C

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“…Attributed to the promising applications in many fields such as 3D display, information encryption, and asymmetric synthesis, − chiral luminescent materials with circularly polarized luminescence (CPL) properties have been widely reported in recent years. Typically, CPL materials consist of chiral and chromophore components that interact in various ways. − To date, many strategies have been developed to prepare high-performance CPL materials with high luminescence quantum yield and a large luminescence asymmetry factor ( g lum ), such as construction of chiral luminescent liquid crystals, , chiral supramolecular assembly, − fluorescence resonance energy transfer (FRET), , and so forth.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Mesogen-Jacketed Liquid Crystal Copolymers with Long-Lived Circularly Polarized Room-Temperature Phosphorescence

Liu,

Deng,

Huang

et al. 2024

ACS Appl. Polym. Mater.

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Circularly polarized phosphorescence (CPP) materials, integrating the advantages of phosphorescence with circularly polarized luminescence, show wide applications in many fields. However, designing and preparing pure organic CPP materials remain challenging, as ensuring the stability of triplet excitons at room temperature while achieving chiral transfer from chiral structures to achiral chromophores is difficult. Herein, we propose a strategy to harness the structural features of mesogen-jacketed liquid crystal polymers (MJLCPs) for CPP material construction. A chiral monomer MJ0Chol and a phosphorescent monomer MJ0DFM are polymerized to prepare the homopolymers PMJ0Chol and PMJ0DFM and copolymers DFM(x)-Chol(y). The phosphorescence lifetime is effectively enhanced by the "jacketing" effect of MJLCPs, and the circularly polarized luminescence is activated through the construction of a chiral helical columnar phase. With the content of the MJ0DFM component increasing, the lifetime of copolymers gradually improves. Meanwhile, the |g lum | values of the samples exhibit an initial increase followed by a decrease with an increasing cholesterol content. DFM(0.6)-Chol(0.4) shows the highest g lum values for both fluorescence and phosphorescence, reaching −4.4 × 10 −3 and −7.1 × 10 −3 , respectively. Meanwhile, the phosphorescence lifetime can be achieved at 252 ms.

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Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence: Generation, Enhancement, and Application

Liu,

Zhou,

Tang

et al. 2024

Adv Funct Materials

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Circularly polarized luminescent (CPL) materials have garnered tremendous attention owing to their expanded optical properties beyond emission wavelength and intensity. Among these, the emerging circularly polarized organic ultralong room‐temperature phosphorescence (CP‐OURTP) materialsdemonstrating elegant and distinct features are of significant importance for their extended emission lifetime, which represent a novel frontier in research with promising scientific and technological applications across diverse fields. This review systematically outlines the traditional strategies to achieve CP‐OURTP including organic crystals, copolymerization, host–guest doping, a combination of the copolymerization and host–guest doping, spinning and twisting technology, and supramolecular polymer assembly. Importantly, the recent significant progress of CP‐OURTP in the chiral soft materials, such as liquid crystals (LCs) involving lyotropic LCs (cellulose nanocrystals, CNCs) and chiral thermotropic LCs (cholesteric LCs and chiral LC elastomers), is showcased. Finally, the practical applications of CP‐OURTP materials are summarized, and the review concludes with the perspectives on the current challenges and future opportunities for CP‐OURTP materials. This review aims to inspire the further innovations in the fabrication of advanced CP‐OURTP materials and enrich their promising applications.

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Switchable circular polarized phosphorescence enabled by cholesteric assembled nanocelluloses

Cited by 6 publications

References 42 publications

Helical columnar phase of mesogen-jacketed liquid crystal polymers for efficient circularly polarized luminescence

Helical columnar phase of mesogen-jacketed liquid crystal polymers for efficient circularly polarized luminescence

Synthesis and Properties of Mesogen-Jacketed Liquid Crystal Copolymers with Long-Lived Circularly Polarized Room-Temperature Phosphorescence

Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence: Generation, Enhancement, and Application

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