Ionic liquid crystals based on amino acids and gemini surfactants: tunable phase structure, circularly polarized luminescence and emission color

Yi, Mengjiao; Qi, Ping; Fan, Qian; Hao, Jingcheng

doi:10.1039/d1tc05265a

Cited by 10 publications

(12 citation statements)

References 67 publications

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“…As for as we know, excitation-dependent CPL emission is rarely reported in the literature, ,, and the present work reports the first example of excitation-dependent CPL in the polymer system. In addition, the luminescence dissymmetry factor g lum of the core/shell particles is calculated to be 5 × 10 –3 (Figure S11), comparable to the reported nonconventional fluorescent CPL-active materials. − …”

supporting

confidence: 72%

Nonconventional Fluorescence-Based Circularly Polarized Luminescent Core/Shell Particles: Maleic Anhydride Copolymer as the Core and Chiral Helical Polyacetylene as the Shell

et al. 2023

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Chiroptical micro/nanomaterials with circularly polarized luminescence (CPL) properties have aroused everincreasing attention. However, the variety of such materials is seriously limited in self-assembly systems from small organic molecules. Herein, we report an unprecedented, facile strategy to achieve monodispersed polymer-based CPL-active core/shell particles using maleic anhydride copolymer as core and chiral helical polyacetylene as shell. Noticeably, the obtained core/shell particles carry no conventional fluorescent units, but can show intense blue-emitting nonconventional fluorescence with both aggregation-induced emission and concentration-enhanced emission performance. In particular, it is interesting that excitationdependent CPL emission behavior is further observed in the core/shell particles, with the highest luminescence dissymmetry factor of 5 × 10 −3 . The present work provides a versatile platform with wide universality for constructing polymeric CPL nano/ microarchitectures.

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supporting

confidence: 72%

Nonconventional Fluorescence-Based Circularly Polarized Luminescent Core/Shell Particles: Maleic Anhydride Copolymer as the Core and Chiral Helical Polyacetylene as the Shell

et al. 2023

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“…Accordingly, nonconventional luminophores have emerged as promising candidates in the construction of CPL materials. [233][234][235] Wu and colleagues reported the synthesis of bottlebrush poly mers bearing poly(L-lactic acid) (PLLA) or poly(D-lactic acid) (PDLA) side chains on every helical polyisocyanide backbone atom employing grafting-through strategy. [236] The results suggested that the acquired bottlebrush polymers have a degree of polymerization of up to 250 through living polymerization.…”

Section: Nonconventional Fluorescence-based Circularly Polarized Lumi...mentioning

confidence: 99%

“…Accordingly, nonconventional luminophores have emerged as promising candidates in the construction of CPL materials. [ 233–235 ]…”

Section: Newly Emerging Categories Of Polymer‐based Circularly Polari...mentioning

confidence: 99%

Polymer‐Based Circularly Polarized Luminescent Materials

Zhong

Zhao

Deng

2023

Advanced Optical Materials

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Chiral materials capable of generating circularly polarized luminescence (CPL) have gained rapidly growing research interest by virtue of their peculiar photophysical characteristics and far‐reaching applications. Amongst various CPL materials, polymer‐based CPL materials have constituted an important class owing to their abundant types, ease of manufacture, high thermal stability, as well as, tunable properties. The present work reviews the latest advances in constructing polymer‐based CPL materials, which are classified based on the interaction modes between chiral and luminescent components, that is, covalent interaction, non‐covalent interaction, as well as, without covalent and non‐covalent interactions. The newly emerging categories of polymer‐based CPL materials, that is, nonconventional fluorescence‐based CPL materials, circularly polarized room temperature phosphorescence, and polymer‐based CPL materials with thermally activated delayed fluorescence properties are also presented. Typical applications of the polymer‐based CPL emitters in organic light‐emitting diodes, information security encryption, and optical sensors are further discussed. Additionally, the current challenges and future perspectives in this field are summarized. This review article is expected to stimulate more unprecedented achievements derived from polymer‐based CPL materials, thus further promoting their future practical applications.

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“…However, because of the heterogeneity of nonconventional luminogens, pure organic CTE-based CPL materials have rarely been reported. 22,23 Therefore, it is of great significance to design and synthesize new pure organic CTE-based CPL materials.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Compared to the conventional luminogens, the CTE luminogens are more hydrophilic, easy to prepare, and biocompatible, making them ideal for green luminescent materials, biological applications, and advanced anticounterfeiting materials. , CTE-based CPL materials have displayed promising abilities in multicolor luminescence, advanced anticounterfeiting materials, and chemical sensing. However, because of the heterogeneity of nonconventional luminogens, pure organic CTE-based CPL materials have rarely been reported. , Therefore, it is of great significance to design and synthesize new pure organic CTE-based CPL materials.…”

Section: Introductionmentioning

confidence: 99%

Research on Circularly Polarized Luminescent and Clustering-Triggered Emission Properties of Cholesteryl Benzoate

et al. 2022

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Circularly polarized luminescence (CPL) materials have attracted intensive attention due to their exceptional photophysical properties. However, it has been rarely reported in the field of nontraditional luminescence. It is of great significance to construct circularly polarized luminescent materials with atypical luminescent groups without traditional conjugated structures. Cholesteryl benzoate is a classical cholesteric liquid crystal, and we coincidentally find that it shows clustering-triggered emission behavior in recent studies, which means that cholesteryl benzoate can emit circularly polarized light at the cholesteric liquid crystal phase. Therefore, we synthesized cholesteryl benzoate and studied its photophysical properties in detail. The findings show that cholesteryl benzoate shows triggered emission behavior. The research results suggest that the emission behavior of cholesteric benzoate shows concentration-enhanced emission, aggregation-induced emission (AIE), excitation wavelength dependence, and low-temperature phosphorescence luminescence characteristics. The solid-state circularly polarized luminescence (CPL) property of cholesteryl benzoate quenched by the cholesteric phase was also studied, and the measured luminescence asymmetry factor (g lum) could achieve −2.6 × 10–3. In addition, we also simulated the luminescence mechanism of cholesteryl benzoate by theoretical calculation.

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Ionic liquid crystals based on amino acids and gemini surfactants: tunable phase structure, circularly polarized luminescence and emission color

Abstract: Circularly polarized luminescence (CPL)-active ionic liquid crystalline (ILC) featuring excitation wavelength-dependent (Ex-De) photoluminescence have latent application prospects in display devices. In addition, materials with tunable CPL responses are quite attractive...

Cited by 10 publications

References 67 publications

Nonconventional Fluorescence-Based Circularly Polarized Luminescent Core/Shell Particles: Maleic Anhydride Copolymer as the Core and Chiral Helical Polyacetylene as the Shell

Nonconventional Fluorescence-Based Circularly Polarized Luminescent Core/Shell Particles: Maleic Anhydride Copolymer as the Core and Chiral Helical Polyacetylene as the Shell

Polymer‐Based Circularly Polarized Luminescent Materials

Research on Circularly Polarized Luminescent and Clustering-Triggered Emission Properties of Cholesteryl Benzoate

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