Photochromic ionogel with a wide temperature range and fatigue resistance for high-resolution rewritable information record

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153263 - 153263

Published: June 18, 2024

Language: Английский

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基于吩噻嗪和多环芳烃的高效光诱导室温磷光材料: 可调发光颜色和热刺激响应

Science China Materials, Journal Year: 2024, Volume and Issue: 67(9), P. 2778 - 2788

Published: July 9, 2024

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Chameleon-inspired adaptive photoreactive polyurethane films for dynamic secure multidimensional “burn-after-reading” encryption

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159316 - 159316

Published: Jan. 6, 2025

Language: Английский

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Resilient, Robust and Mechanical-Responsive Polydimethylsiloxane Composites Endowed by Interfacial Enhancement

Published: Jan. 1, 2025

The transition of material transparency induced by mechanical stimulation plays a crucial role in information encryption, anti-counterfeiting, and smart windows. However, developing multifunctional composite film that simultaneously possesses high elasticity sensitivity, low energy consumption, reusability remains significant challenge. In this work, homogeneous photonic crystal SiO2 were modified commercial available coupling agent KH570, enabling it to be chemically bonded the PDMS polymer networks, which enhanced interfacial interaction allowed periodic structure return its original state effectively both before after stretching. After undergoing 200 cycles testing, exhibited dissipation, with transmittance maintaining stability within range 90% 20%. At -50 °C, maximum loss factor was ~0.24, indicating retained resilience even under temperature. candidate for window supply only force. Furthermore, we adopted advanced imprinting technology, utilizing selectively designed molds embed arbitrary encrypted information. By controlling duration 5 seconds, 30 seconds 80 achieved differentiated displays same strain conditions on single film. Therefore, work can provide new insights into fields such as windows, sensing.

Language: Английский

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Robust and Long-Lived Photochromic Textiles with Spiropyran Derivatives

ACS Applied Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Photochromic materials have attracted growing interest because they the capability to undergo reversible color changes upon irradiation with light. The light fatigue resistance of photochromic and its affinity biomass-based substrates are two important factors limiting applications. So, achieving robust long-lived property for practical applications still remains a challenge. Herein, we report silylation spiropyran universal pad dyeing processes attain smart textiles. Our approach consists silane substitution spiropyran, thus acting as coating graft onto cotton fabrics under action coupling agent. SEM, EDS, XPS results showed that silicon hydroxyl groups on silanized were strongly connected –OH fabrics, which improved binding fastness fabrics. Importantly, our strategy tackles other severe problems encountered when molecules, such difficult direct low switching speeds in solid materials. This study is helpful enriching derivatives, improving between compounds fibers, realizing long-life application Moreover, it has great prospects hydroxyl-containing substrates, color-changing glass anticounterfeiting paper, potential values intelligent decoration erasable information storage.

Language: Английский

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Photochromic Organic–Inorganic Material for Focusable Adaptive Lenses Fabrication

Advanced Photonics Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 2, 2025

Adaptive optics (AO) has transformed the understanding of biology and medicine by providing unprecedented access to their fundamental elements. This technology leverages techniques strategies originally developed in astronomy measure correct optical aberrations. Herein, development a novel photo‐responsive material for AO applications is presented. The consists photochromic film zirconia‐based hybrid organic–inorganic (HOI) matrix that incorporates up 20% dithienylethene molecules. exceptional properties thermal stability component, combined with remarkable properties, adjustable thickness, high dye‐loading capacity HOI sol–gel matrix, enable creation system optimized refractive index modulation (Δ n ) under light exposure. Comprehensive evaluations are conducted, analyzing changes response varying intensity exposure time. Additionally, prototypes focusable adaptive lenses specifically designed operation near‐infrared spectrum engineered, achieving significant Δ 0.0314, effectively minimizing efficiency losses attributable absorption.

Language: Английский

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Realizing temperature-gated photochromic NaYTiO4:Bi3+ for a time–temperature indicator

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Language: Английский

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Resilient and robust mechanoresponsive polydimethylsiloxane/SiO2 composites induced by interfacial enhancement

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137361 - 137361

Published: March 1, 2025

Language: Английский

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Solvent‐Mediated Stimuli Responsive Phosphors Based on Phosphine‐Copper Iodide Hybrid Complexes for Information Encryption

Chinese Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Comprehensive Summary Stimuli responsive phosphors with photoluminescence and thermoresponsive luminescence are intriguing for information encryption applications. Herein, two solvent‐mediated, stimuli based on phosphine‐copper(I) iodide complexes 1 2 reported. Complex exhibited temperature‐ excitation‐wavelength‐dependent dual‐emission characteristics, displaying high energy (HE) low (LE) bands the quantum yield (QY) of 38.5% under 365 nm irradiation; but complex no emission. The LE emission can be attributed to a triplet halide‐to‐metal charge transfer ( 3 XMCT) copper‐centered 4d→3s, 3p transitions, whereas HE originates from halide‐to‐ligand charge‐transfer XLCT). Importantly, in , strong C—H∙∙∙Cl interaction supramolecular crystal lattice annihilated sensitive cluster centered CC) excited state. Intriguingly, only band successfully activated by high‐energy excitation or changing temperature. Nevertheless, QY is 15.6% 310 irradiation, which smaller than that 49.8%. This behavior was further confirmed heating, where both show reversible transformation between achieved. Furthermore, properties make these suitable candidates anti‐counterfeiting

Language: Английский

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Tuning phase transition and fluorescence quenching in 0D organic–inorganic hybrid materials by precise organic cation modification

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Three novel organic–inorganic hybrids exhibit increased phase transition temperatures and distinct temperature-dependent fluorescence quenching by progressive organic group substitution.

Language: Английский

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