Results 101 to 110 of about 5,039 (253)

Invisible near‐infrared thermo‐stimulated luminescence from carbon dots enabled by stepwise energy transfer for concealed information encryption

Responsive Materials, EarlyView.
A fully metal‐free near‐infrared (NIR) thermo‐stimulated luminescent system is developed by embedding carbon dots into a carbon nitride matrix and integrating multistage Förster resonance energy transfer. The system exhibits long‐term charge retention, rewritable optical memory, and highly concealed NIR readout, promising for secure data encryption and
Kai Jiang, Jun Jiang, Zihan Cheng, Hao Cui, Jingmin Zhang, Hengwei Lin   +5 more
wiley   +1 more source

Carbonized polymer dots with aqueous‐stable room‐temperature phosphorescence: Mechanism, matrix engineering, and application

Responsive Materials, EarlyView.
This review focuses on inorganic and organic matrices that enable aqueous‐stable room‐temperature phosphorescence (RTP) in carbonized polymer dots (CPDs). It explains the underlying RTP mechanisms, highlights how matrix engineering provides spatial confinement and bonding interactions to stabilize triplet excitons in water, and demonstrates key ...
Yuhan Hou, Chengyu Zheng, Songyuan Tao, Yuzhuo Wang, Bai Yang   +4 more
wiley   +1 more source

Unforgeable Red: Design and Application of SO‐Annulated Perylene Diimides for Anti‐Counterfeiting

Small, EarlyView.
Sulfoxide‐annulated derivatives were synthesized as photoactive chromophores and implemented in photopatterning processes to design anti‐counterfeiting signatures with a double level of authentication. Patterns ranging from centimeter to micrometer size were obtained with high definition, and thereafter these approaches were tested in potential market ...
Pablo Simón Marqués, Sandra Pérez‐Domínguez, Nicolas Bréfuel, Jose M. Porro, So Ueno, Nathalie Saffon‐Merceron, Hiroko Yamada, Laurent Malaquin, Claire Kammerer   +8 more
wiley   +1 more source

Synthesis of Samarium‐incorporated X‐ray‐sensitive nanoparticles and hydrogels: Diverse applications in radiation monitoring and dynamic information display

Smart Molecules, EarlyView.
Sm3+‐doped α‐NaLuF4 and β‐NaLuF4 were synthesized. The X‐ray‐activated persistent luminescence abilities and afterglow properties can be well controlled. Sm3+‐doped β‐NaLuF4 exhibits remarkable afterglow ability. The hexagonal β‐NaLuF4:3%Sm3+‐incorporated hydrogel can be further programmed with other types of hydrogels to enable tunable emission ...
Zetong Zhang, Yujie Chen, Yuanyao Chen, Leipeng Li, Yonggang Wu, Yanmin Yang, Hailei Zhang   +6 more
wiley   +1 more source

Smart cellulose‐based room temperature phosphorescent materials: From mechanisms to construction strategies and applications

Smart Molecules, EarlyView.
This review elucidates the photophysical mechanisms of cellulose‐based room temperature phosphorescent materials and systematically outlines their construction strategies, such as cluster emission center engineering. This article demonstrates their applications in fields like information encryption and bioimaging, and looks ahead to the core challenges
Shasha Wu, Yifan Zhou, Wanjin Wu, Yan Tang, Mengfan Jing, Jianyu Zhang, Haoke Zhang, Zheng Zhao, Junwei Wang, Laurent Maron, Lijie Liu   +10 more
wiley   +1 more source

White light emitting molecular logic gates

Smart Molecules, EarlyView.
White light emitting smart molecules with Boolean logic computing ability are surveyed. Abstract White light emitting (WLE) materials are of considerable interest with commercial and societal applications in video displays and lighting devices. A characteristic property of WLE materials is the luminescence profile spanning from 380 to 700 nm.
Davide Benedetto Tiz, Massimo Catania, David C. Magri   +2 more
wiley   +1 more source

Concurrent tunable structural color, luminescence, and afterglow in single ZnS: X@SiO2 spheres via SiO2‐nanoarmor and calcination decoupling collaborative strategy

Smart Molecules, EarlyView.
For the first time, tunable structural color, luminescence, and afterglow are integrated into single ZnS:X@SiO2 spheres via a SiO2‐nanoarmor and calcination decoupling strategy, achieving 250–410 nm monodisperse wurtzite spheres with 91% phase conversion, 12.8% PLQY, and 12.27 s afterglow. Abstract The integration of structural color, photoluminescence,
Tianyi Liu, Rou Meng, Shufen Zhang, Suli Wu   +3 more
wiley   +1 more source

Quick Response Code Verification Using Anti-Counterfeiting Pattern and Multi-Feature Fusion Network. [PDF]

Sensors (Basel)
Sun K, Guo Z, Zheng H.
europepmc   +1 more source

Revisiting small‐molecule fluorescent probes in food freshness detection

Smart Molecules, EarlyView.
Fluorescent probes serve as versatile tools for food freshness monitoring. This review summarizes recent advances in probes targeting biogenic amines, hydrogen sulfide, pH values, and other key spoilage markers, highlighting their design principles, sensing mechanisms, and practical applications in food quality monitoring. Abstract Food spoilage driven
Xinrui Wang, Zhao Wang, Jingwen Zou, Xuyuan Jiang, Changyu Bian, Zhiqiang Mao   +5 more
wiley   +1 more source

Wrinkled Photonic Elastomers with Dynamic Structural Color Patterns for Multilevel Optical Anti-Counterfeiting. [PDF]

Gels
Jiang X, Yan P, Wu C, Ke J, Hou W, Huang J, Lian Z, Lü T, Bai L.   +8 more
europepmc   +1 more source