Photo-triggered full-color circularly polarized luminescence based on photonic capsules for multilevel information encryption

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: May 25, 2023

Materials with phototunable full-color circularly polarized luminescence (CPL) have a large storage density, high-security level, and enormous prospects in the field of information encryption decryption. In this work, device-friendly solid films color tunability are prepared by constructing Förster resonance energy transfer (FRET) platforms chiral donors achiral molecular switches liquid crystal photonic capsules (LCPCs). These LCPCs exhibit photoswitchable CPL from initial blue emission to RGB trichromatic signals under UV irradiation due synergistic effect chirality show strong time dependence because different FRET efficiencies at each node. Based on these response characteristics, concept multilevel data using LCPC is demonstrated.

Language: Английский

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Bioinspired MXene-Based Soft Actuators Exhibiting Angle-Independent Structural Color

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 15(1)

Published: Nov. 28, 2022

Abstract In nature, many living organisms exhibiting unique structural coloration and soft-bodied actuation have inspired scientists to develop advanced colored soft actuators toward biomimetic robots. However, it is challenging simultaneously biomimic the angle-independent color shape-morphing capabilities found in plum-throated cotinga flying bird. Herein, we report MXene-based with that are fabricated through controlled self-assembly of colloidal SiO 2 nanoparticles onto highly aligned MXene films followed by vacuum-assisted infiltration polyvinylidene fluoride into interstices. The resulting exhibit brilliant, color, as well ultrafast recovery speeds (a maximum curvature 0.52 mm −1 can be achieved within 1.16 s, a time ~ 0.24 s) response acetone vapor. As proof-of-concept illustrations, applied demonstrate blue gripper-like bird’s claw capture target, artificial green tendrils twine around tree branches, an multicolored butterfly flutter its wings upon cyclic exposure strategy expected offer new insights development multifunctional for somatosensory robotics next-generation intelligent machines.

Language: Английский

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Three‐Dimensional Electrochromic Soft Photonic Crystals Based on MXene‐Integrated Blue Phase Liquid Crystals for Bioinspired Visible and Infrared Camouflage

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(42)

Published: Sept. 2, 2022

Developing bioinspired camouflage materials that can adaptively change color in the visible and infrared (IR) regions is an intriguing but challenging task. Herein, we report emerging strategy for fabricating dynamic IR by controlled situ growth of novel photopolymerizable blue phase liquid crystals with cubic nanoarchitectures onto highly aligned MXene nanostructured thin films. The resulting MXene-integrated 3D soft photonic exhibit vivid structural colors reversible switching between a bright colored state dark black under low DC electric field. As illustration, proof-of-concept pixelated devices allow pixel-controllable electrochromism are demonstrated. Furthermore, free-standing electrochromic flexible film such fabricated, where thermal enabled leveraging superior electrothermal conversion mid-IR emissivity nanomaterials.

Language: Английский

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Processable circularly polarized luminescence material enables flexible stereoscopic 3D imaging

Science Advances, Journal Year: 2023, Volume and Issue: 9(43)

Published: Oct. 25, 2023

Endowing three-dimensional (3D) displays with flexibility drives innovation in the next-generation wearable and smart electronic technology. Printing circularly polarized luminescence (CPL) materials on stretchable panels gives chance to build desired flexible stereoscopic displays: CPL provides unusual optical rotation characteristics achieve considerable contrast ratio wide viewing angle. However, lack of printable, intense suitable for processing hinders implementation 3D devices. Here, we report a controllable macroscopic production printable CPL-active photonic paints using designed confining helical co-assembly strategy, achieving maximum dissymmetry factor (glum) value 1.6. We print customized graphics meter-long luminous coatings these range substates such as polypropylene, cotton fabric, polyester fabric. then demonstrate textile display panel two printed sets pixel arrays based orthogonal emission, which lays an efficient framework future intelligent clothing.

Language: Английский

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Circularly polarized luminescence in chiral orientationally ordered soft matter systems

Deleted Journal, Journal Year: 2023, Volume and Issue: 1(1)

Published: July 23, 2023

Abstract Circularly polarized luminescent (CPL) materials have received significant attention in the field of fundamental science recently. These offer substantial advancement technological applications, such as optical data storage, displays, and quantum communication. Various strategies been proposed self‐assembled consisting inorganic, organic, hybrid systems, particularly chiral orientationally ordered soft matter systems (e.g., liquid crystals (LCs) LC polymers). However, developing scientific approaches to achieve pronounced steerable circularly light emission remains challenging. Herein, we present a comprehensive review on recent development CPL based LCs, including thermotropic LCs (cholesteric bent‐core LCs), lyotropic (nanocellulose polyacetylene‐based polymers LC‐based polymers, helical nanofibers, network). In addition, mechanisms, design principles, potential applications these are systematically reviewed. This summarizes with prospect latent challenges, which can strengthen our understanding basic principles provide new insight into progress several fields, chemistry, science, optics, electronics, biology.

Language: Английский

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Polymer‐Based Circularly Polarized Luminescent Materials

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(6)

Published: Jan. 19, 2023

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

Language: Английский

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Mechanically Responsive Circularly Polarized Luminescence from Cellulose Nanocrystal‐based Shape‐Memory Polymers

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(29)

Published: April 6, 2023

Stimulus-responsive materials that display circularly polarized luminescence (CPL) have attracted great attention for application in chiral sensors and smart displays. However, due to difficulties the regulation of structures, fine control CPL remains a challenge. Here, it is demonstrated cellulose nanocrystal shape-memory polymers (CNC-SMPs) with luminescent components enable mechanically responsive CPL. The nematic organization CNCs material gives rise photonic bandgap. By manipulating bandgap or wavelengths CNC-SMPs, precise emission varied high dissymmetry factors (glum ) achieved. Specifically, can be switched reversibly by treating CNC-SMPs hot-pressing recovery heating. Pressure-responsive tunable glum values ascribed pressure-responsive bandgaps. Moreover, colorimetric CPL-active patterns are created imprinting desired forms into SMP samples. This study demonstrates novel way fabricate systems using biomaterials.

Language: Английский

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Mechanochromic and ionic conductive cholesteric liquid crystal elastomers for biomechanical monitoring and human–machine interaction

Materials Horizons, Journal Year: 2023, Volume and Issue: 11(1), P. 217 - 226

Published: Oct. 20, 2023

Ionic conductive cholesteric liquid crystal elastomers with dynamic color-changing and electrical sensing functions were developed through the integration of polymer ionic networks.

Language: Английский

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Induced CPL‐Active Materials Based on Chiral Supramolecular Co‐Assemblies

Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 29(22)

Published: Jan. 24, 2023

Abstract Circularly polarized luminescence (CPL) has attracted much interest due to its potential applications on chiral photonic techniques and optoelectronic materials science. As known, dissymmetry factor ( g em ) of CPL is one essential for evaluating the features CPL‐active materials. Much attention focused how increase value, which most important issues practical applications. Recently, more works have demonstrated that supramolecular could provide significant strategy improve value through orderly helical superstructure building blocks. Normally, this kind assembly process can be accompanied by chirality transfer induction mechanism, promote amplification effect induced achiral dyes. In review, we fully summarized recent advances co‐assemblies, their in circularly organic light‐emitting diodes (CP‐OLEDs) current challenges.

Language: Английский

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Responsive soft actuators with MXene nanomaterials

Deleted Journal, Journal Year: 2023, Volume and Issue: 2(1)

Published: Dec. 11, 2023

Abstract Compared with traditional rigid actuators, soft actuators exhibit a large number of advantages, including enhanced flexibility, reconfigurability, and adaptability, which motivate us to develop artificial widespread applications. Soft MXene nanomaterials are regarded as highly promising candidates for advancing the development bioinspired robotics consequence their unprecedented physicochemical characteristics, such high electronic conductivity, thermal photothermal conversion capability, abundant surface functional groups. Herein, comprehensive overview recent advancement extensive applications from perspective bioinspiration is provided. First, synthetic methods properties briefly summarized. Subsequently, (including photoresponsive electroresponsive chemoresponsive actuators) sequentially investigated focus on fabrication approaches, actuation properties, underlying mechanisms, At end, future challenges opportunities rapid discussed.

Language: Английский

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