Hydrogen Bond‐Associated Photofluorochromism for Time‐Resolved Information Encryption and Anti‐counterfeiting DOI

Yuqian Xie,

Xiaomei Zhao, Hong Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 23, 2024

Abstract Time‐resolved photofluorochromism constitutes a powerful approach to enhance information encryption security but remains challenging. Herein, we report strategy of using hydrogen bonds regulate the time for initiating photofluorochromism. In our strategy, copolymers containing negative photochromic spiropyran (NSP), naphthalimide, and multiple hydrogen‐bonding (UPy) units are designed, which display photo‐switchable fluorescence resonance energy transfer (FRET) process from naphthalimide donor NSP acceptor. Interestingly, FRET is locked via dynamic interaction between ring‐opened UPy moieties, resulting in time‐dependent fluorescence. The change can be finely regulated fraction polymers. Besides novel fluorescence, polymers also take advantage visible‐light triggerable, excellent photostability, photoreversibility, processability. We demonstrate that these properties enable them many application opportunities such as fluorescent labels multilevel patterns.

Language: Английский

Hydrogen Bond‐Associated Photofluorochromism for Time‐Resolved Information Encryption and Anti‐counterfeiting DOI

Yuqian Xie,

Xiaomei Zhao, Hong Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 23, 2024

Abstract Time‐resolved photofluorochromism constitutes a powerful approach to enhance information encryption security but remains challenging. Herein, we report strategy of using hydrogen bonds regulate the time for initiating photofluorochromism. In our strategy, copolymers containing negative photochromic spiropyran (NSP), naphthalimide, and multiple hydrogen‐bonding (UPy) units are designed, which display photo‐switchable fluorescence resonance energy transfer (FRET) process from naphthalimide donor NSP acceptor. Interestingly, FRET is locked via dynamic interaction between ring‐opened UPy moieties, resulting in time‐dependent fluorescence. The change can be finely regulated fraction polymers. Besides novel fluorescence, polymers also take advantage visible‐light triggerable, excellent photostability, photoreversibility, processability. We demonstrate that these properties enable them many application opportunities such as fluorescent labels multilevel patterns.

Language: Английский

Citations

12
Pyridine‐Based Rigidochromic Fluorescent Security Ink DOI Open Access

M. Zuo,

Cong Zeng, Jie Liu

et al.

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

Published: March 21, 2025

Comprehensive Summary Traditional fluorescent probes typically display blueshifted emission in rigidifying media; however, a newly developed class of rigidochromic fluorophores derived from phenanthridine demonstrates remarkable redshifted under similar conditions. Pyridine, with N‐heterostructure to those group, is considered promising candidate for achieving comparable rigidity‐induced redshift behavior. In this work, we synthesized eight organic featuring diverse functional units and substitutes by systematically combining pyridine carbazole, triazatruxene (TAT), tetraphenylethylene (TPE), respectively. These molecules exhibit significant redshifts (up 225 nm, record high value ever reported) or notable intensity changes as the rigidity polymer matrix increases, along unique acid responsiveness. The differences polar‐π interactions between polymers diversify behavior, advancing development secure printing intelligent optical materials. By embedding these into films helical phase structures, tunable chirality was achieved. Notably, leveraging acid‐responsive properties fluorophores, time‐dependent light‐controlled dynamic encryption system constructed, successfully enabling multi‐level information encryption. This research greatly expands scope their applications anti‐counterfeiting storage.

Language: Английский

Citations

0
4D Assembly of Time‐dependent Lanthanide Supramolecular Multicolor Phosphorescence for Encryption and Visual Sensing DOI Creative Commons

Yun‐Ga Wu,

Wei‐Lei Zhou,

Yu Qiu

et al.

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

Published: Feb. 14, 2025

Abstract Supramolecular dynamic room temperature phosphorescence (RTP) is the focus of current research because its wide application in biological imaging and information anti‐counterfeiting. Herein, a time‐dependent supramolecular lanthanide phosphorescent 4D assembly material with multicolor luminescence including white, which composed 4‐(4‐bromophenyl)‐pyridine salt derivative (G), inorganic clay (LP)/Eu complex pyridine dicarboxylic acid (DPA) reported. Compared self‐assembled nanoparticle G, lamellar G/LP showed double emission fluorescence at 380 nm 516 over time. Within 60 min, lifetime quantum yield increases from none to 7.4 ms 27.53% respectively, achieving emission, due limitation progressive stacking LP electrostatically driven “domino effect.” Furthermore, DPA G/LP/Eu leads time‐resolved colorless purple successfully applied multi‐level logic anti‐counterfeiting efficiently antibiotic selective sensor.

Language: Английский

Citations

0
Algorithm in chemistry: molecular logic gate-based data protection DOI
Yu Dong, Shiyu Feng, Weiguo Huang

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review focuses on stimuli-responsive material (SRM)-based data protection, emphasizing the integration of intricate logic and algorithms in SRM-constructed hardware. It also discusses current challenges future directions field.

Language: Английский

Citations

0
Non‐volatile and Secure Optical Storage Medium with Multilevel Information Encryption DOI Creative Commons
Jie Shao,

Xiyang Li,

Meng Liu

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 16, 2024

Abstract Non‐volatile photomemory based on photomodulated luminescent materials offers unique advantages over voltage‐driven memory, including low residual crosstalk and high storage speed. However, conventional have thus far been volatile insecure for data because of trap depth single‐level channels. Therefore, the development a novel non‐volatile multilevel medium encryption remains challenge. Herein, robust, non‐volatile, optical is reported, Ba 3 MgSi 2 O 8 :Eu 3+ , which combined merits light‐induced valence (Eu → Eu 2+ ) photochromic phenomena using stimulation effects, accompanied by larger color contrasts (>90%). These two features provided dual‐level channels in single host, significantly improving security. Notably, signals could be written erased simultaneously alternating 265 365 nm light stimuli. Theoretical calculations indicated that robust centers induced intrinsic interstitial Mg vacancy defects with suitable depths enable excellent reversibility long‐term capability. By relying different readout mechanisms, encrypted information can accurately decrypted separately probing signals, ensuring This study proposes approach constructing

Language: Английский

Citations

3
Hydrogen Bond‐Associated Photofluorochromism for Time‐Resolved Information Encryption and Anti‐counterfeiting DOI

Yuqian Xie,

Xiaomei Zhao, Hong Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 23, 2024

Abstract Time‐resolved photofluorochromism constitutes a powerful approach to enhance information encryption security but remains challenging. Herein, we report strategy of using hydrogen bonds regulate the time for initiating photofluorochromism. In our strategy, copolymers containing negative photochromic spiropyran (NSP), naphthalimide, and multiple hydrogen‐bonding (UPy) units are designed, which display photo‐switchable fluorescence resonance energy transfer (FRET) process from naphthalimide donor NSP acceptor. Interestingly, FRET is locked via dynamic interaction between ring‐opened UPy moieties, resulting in time‐dependent fluorescence. The change can be finely regulated fraction polymers. Besides novel fluorescence, polymers also take advantage visible‐light triggerable, excellent photostability, photoreversibility, processability. We demonstrate that these properties enable them many application opportunities such as fluorescent labels multilevel patterns.

Language: Английский

Citations

1