New Transparent Rare‐Earth‐Based Hybrid Glasses: Synthesis, Luminescence, and X‐Ray Imaging Application

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

ABSTRACT Metal–organic hybrid glasses have recently emerged as the fourth member in glass family due to its versatile hosting ability various functional ions. However, no luminescent ions been successfully introduced into date. Here, we reported a benign desolvation method, whereby rare‐earth‐based (RE(NO 3 ) (C 5 H 2 N 4 glasses) were rapidly formed within 1 h at low temperature down 140°C. Such facile synthesis was applicable full rare‐earth family, including Y, Sc, and lanthanide series. The exhibited not only high transparency of over 88% but also quantum yield up 70%, which demonstrated spatial resolution X‐ray imaging screen. Hydrogen bond played key role maintaining structural integrity organic‐metal framework, turn promoted radiative recombination excited states both singlet triplet organic moiety (4,5‐dicyanoiazole, or DCI). An efficient energy transfer from DCI ions, known antenna effect, probed by steady‐state time‐resolved spectroscopy. Apart glasses, incorporation inert such La, Lu generated transparent enhanced room‐temperature phosphorescence. This work improved toolbox metal–organic provided an ideal matrix for energy‐transfer investigation between linker

Language: Английский

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Superior fluorescent ‘Color Paper-based Displayer’ for advanced anti-counterfeiting and multi-layer information encryption

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160047 - 160047

Published: Jan. 1, 2025

Language: Английский

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Promoting the Photoresponse Rate with Micelles in Hydrogels

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Abstract Fluorescent hydrogels have immense potential and are widely studied for on demand displays. Response rate of fluorophores upon stimuli within the hydrogel matrix is a key role to improve timely responsiveness, but rare reports elaborated it. In this work, photoisomeric spiropyran methacrylate (SPMA) introduced into poly (2‐hydroxyethyl methacrylate) fabricate stimuli‐responsive fluorescent hydrogel. Interestingly, photoresponse SPMA in greatly accelerated at presence F127 micelles than without Both absorbance fluorescence intensity photostationary state improved obviously with micelles. Besides, normalized kinetic studies indicated more 2 times quicker isomerization process. The absolute quantum yields also increased. These can be attributed hydrophobic microenvironment provided by that facilitated conformation transition SPMA. Thus, synergetic effect increased amount activable promoted speed contributed prepared Taking advantage these virtues, multi‐responsive on‐demand information encryption system realized.

Language: Английский

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Synchronizing Multicolor Changes and Shape Deformation Into Structurally Homogeneous Hydrogels via a Single Photochromophore

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

The design of synthetic hydrogels that can mimic their biological counterparts in the simultaneous production multicolor change and shape transformation response to environmental stimuli is great importance toward intelligent camouflage, encryption, actuation. Previous efforts have focused primarily on developing heterogeneous highly rely respective mechanisms achieve color changes separately, synergistically synchronizing such two variations into structurally homogenous via a single chromophore has been challenging. Here, molecular hydrogel simultaneously exhibiting synchronized deformation triggered by stimulus light reported. synchronization mechanism originates from coupled alteration upon irradiation fluorescence emission charge states spiropyran photochromophore covalently incorporated network, thus leading macroscale variation hydrogel, respectively. Following this principle, both positive negative phototropic are obtained concomitantly with but flexibly tunable illumination demonstrated ingenious application biomimetic actuation, camouflage rational combination these systems. This work represents an innovative strategy for bioinspired materials functions compound.

Language: Английский

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Photoresponsive Behavior of Triphenylamine‐Based Organic Small Molecule Emitters Involving a Photo‐Induced Charge‐Transfer Complexation Mechanism under UV Light

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

Published: March 20, 2025

Comprehensive Summary Stimuli‐responsive organic luminescent materials exhibit significant sensitivity to various external stimuli, among which their excellent photosensitivity is particularly prominent. This unique feature gives them great potential for applications. Herein, five small molecule emitters based on triphenylamine derivatives have been synthesized via Suzuki‐coupling reaction. These molecules fluorescence properties with quantum yields ( Φ ) all reaching over 90%. When irradiated a 365 nm UV lamp, interesting photochromic phenomena occurred in chloroform solutions. phenomenon has studied intensively by UV‐vis absorption and spectroscopy, EPR measurements, density functional theory calculations, finally, the group was used as photoinitiation precursor electron donor, photo‐induced charge transfer complex (PCTC) initiated donor successfully constructed.

Language: Английский

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Acid-base interaction modulating the pH responsiveness of fluorescent carbon nanoparticles for time-resolved information encryption and anti-counterfeiting

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161778 - 161778

Published: March 1, 2025

Language: Английский

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A mechanically tough and fluorescent double network hydrogel simultaneously featuring advanced information encryption and smart food monitoring

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162159 - 162159

Published: March 1, 2025

Language: Английский

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Boosting The Solid‐State Luminescence of Phenazine Derivatives by Enhancing Intermolecular Hydrogen Bonds and π–π Interactions in Cocrystals

Chemistry - An Asian Journal, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Abstract Six monosubstituted phenazine derivatives were designed and synthesized for constructing cocrystals to investigate their structure–property relationship. It was found that 2‐substituted phenazines could form with 2,6‐dimethylphenylboronic acid (DBA). These exhibited red‐shifted enhanced luminescence relative individual components, especially 2NP‐DBA whose efficiency nearly 100 times higher than of 2NP. By analyzing the single‐crystal structures hydrogen bonds π–π interactions between molecules detected in cocrystals, which suppressed nonradiative transition pathways. Consequently, all three demonstrated strong continuous interactions, differed from previously reported enhancement resulting destruction interactions. An in‐depth investigation these can not only provide a better understanding structure‐property relationship organic luminescent materials, but also help develop materials intense solid‐state In addition, optical response acidic vapors has been successfully applied anti‐counterfeiting.

Language: Английский

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Dual AIE and Visible-Light-Driven Photoswitchable Polymer for Super-resolution Imaging

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

Published: April 18, 2025

Photochromic polymers and aggregation-induced emission (AIE) materials show great potential for many applications. To explore the synergy of both characteristics in polymer material areas, we reported first synthesis tetraphenylethylene (TPE)-diarylethene (DAE) its application as a super-resolution probe imaging self-assembled cylindrical micelles PSt38k-b-PEO11k. The exhibits high fluorescence ON/OFF ratios, visible-light-driven photocycloreversion, AIE properties. Compared with other DAE studied imaging, our shows advantages higher resolution, quantum yield, or thermal stability.

Language: Английский

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Time-Dependent Information Encryption Using a Supramolecular Polymer Gel Based on a Pillararene

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Language: Английский

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