Stimulus‐Responsive Photonic Crystals for Advanced Security

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(40)

Published: July 20, 2022

Abstract Counterfeiting is a growing global issue causing severe negative impacts on the social economy and posing serious security threats to individuals communities. However, current anticounterfeiting technologies are relatively well known fakers lack sufficient owing development commercialization of high‐resolution equipment. Thus, designing new materials systems urgently needed. Photonic crystals (PCs) with vivid structural colors promising for advanced applications because their unique optical characteristics. In particular, responsive PCs (RPCs), whose signals can be readily adjusted by external stimuli, expected provide improved may used determine authenticity banknotes, documents, drugs. this review, strategies summarized RPCs, including filling into interstitial space periodic photonic structures using as construction blocks PCs. Subsequently, latest progress in developing RPCs constructed encryption information discussed detail. Finally, challenges outlook presented.

Language: Английский

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Stimulus-responsive nonclose-packed photonic crystals: fabrications and applications

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(10), P. 3895 - 3928

Published: Jan. 1, 2023

Stimulus-responsive nonclosely packed photonic crystals are reviewed on the aspects of fundamentals, fabrications, properties, and applications.

Language: Английский

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Chameleon-inspired supramolecular materials based on cucurbit[7]uril and viologens exhibiting full-color tunable photochromic behavior

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149551 - 149551

Published: Feb. 11, 2024

Language: Английский

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An All‐Stretchable, Ultraviolet Protective, and Electromagnetic‐Interference‐Free E‐Textile

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(45)

Published: Aug. 31, 2023

Abstract Flexible and skin‐mountable electronics have drawn tremendous research attention with the booming of smart medical systems wearing technologies, however, their environmental adaptability to electromagnetic solar radiation has long been neglected. Herein, a novel health monitoring e‐textile robust ultraviolet (UV) protecting strong interference (EMI) shielding performance is rationally developed on an ultraelastic bilayered nonwoven textile. Via respective incorporation silver flake‐modified liquid metal (AgLM) nanoparticles (AgNPs) each side permeable substrate, Janus sensing layer electrophysiological function, Joule heating ability, excellent EMI capability (up 38.5 dB in X band) first fabricated. Elastic microfibers embedded sensitive photochromic microcapsules are then situ assembled bioelectric‐sensing layer, achieving reversible UV‐chromic property extraordinary UV protection factor (UPF) 335.56. The all‐stretchable UV‐EMI proof utilized as safe comfortable on‐skin electronic provide point‐of‐care regulation under complex UV/EMI radiative environments. Specifically, stable accurate electrocardiogram (ECG) surface electromyography (sEMG) simultaneously obtained, demonstrating promising applications multifunctional electronics.

Language: Английский

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Preparation of carbon dots-embedded fluorescent carboxymethyl cellulose hydrogel for anticounterfeiting applications

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 238, P. 124028 - 124028

Published: March 15, 2023

Language: Английский

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Preparation of photoresponsive lanthanide aluminate-immobilized nanofibers from recycled bioplastic via solution blowing spinning for optical authentication labeling

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2024, Volume and Issue: 451, P. 115525 - 115525

Published: Feb. 12, 2024

Language: Английский

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Sensitive fluorescence-responsive photonic crystals fabricated from AIE molecule embedded nanospheres for application in dual anti-counterfeiting textiles

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137253 - 137253

Published: March 1, 2025

Language: Английский

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Inverse Opal Photonic Crystals for Real-Time Identifiable Labels via Ultraviolet and Near-Infrared Light

ACS Applied Polymer Materials, Journal Year: 2023, Volume and Issue: 5(1), P. 1002 - 1013

Published: Jan. 3, 2023

In this work, we developed inverse opal photonic crystals (IOPCs) for real-time identifiable labels by tuning the structure color and chemical under ultraviolet (UV) light near-infrared (NIR) light. We prepared IOPCs etching a silica crystal template in thermosensitive hydrogel added to 2,2-diphenyl-2H-naphtho [1,2-b] pyran-6-carbaldehyde (NP). way, transparent turned red UV due photochromic naphthopyran. Meanwhile, green of was superimposed with hydrogel, so that naphthopyran (IOPCs/NP) appeared yellow. When irradiated NIR light, blue from volume contraction hydrogel. simultaneously, IOPCs/NP would finally appear purple. Thus, realized controllable two sources. Based on this, designed series multiple colors which expanded application information anticounterfeiting identification.

Language: Английский

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Zinc tungstate encapsulated into a scarce Zn(ii)–viologen framework with photochromic, electrochromic and chemochromic properties

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(11), P. 5192 - 5201

Published: Jan. 1, 2024

A new type of POM–metaloxoviologen hybrid with a 3D trinuclear Zn( ii )–viologen framework encapsulating POMs exhibits multiple stimulus-responsive behaviors.

Language: Английский

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Tunable Photo/Thermochromic Properties of Cd(II)-Viologen Coordination Polymers Modulated by Coordination Modes for Flexible Imager Film and Anti-counterfeiting

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(20), P. 8803 - 8811

Published: Jan. 1, 2024

Two Cd( ii )-viologen frameworks modulated by coordination modes with tunable photo/thermochromic properties for flexible imaging films and anti-counterfeiting.

Language: Английский

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