Construction of Multicolor Phosphorescent Carbon Dots via Multiple Confinement Strategies DOI
Nan Yang, Zhenzhen Li, Chao Li

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Organic room-temperature phosphorescence (RTP) materials are widely used in optoelectronics, biological imaging, and chemical sensing because of their long luminous lifetime excellent signal-to-noise ratio. Although multicolor RTP systems show important potential for information encryption, spin-orbit coupling (SOC) weakening exciton quenching caused by molecular motion environmental factors limit stable triplet generation, thereby reducing the quantum yield brightness materials. In this study, we developed a novel carbon dot (CD) to effectively solve these problems using multiconfinement system, demonstrating excitation-dependent properties. The synthesized CDs varies from green orange under different excitation wavelengths, with high photoluminescent (54.22%) (39.53 cd/m2). Through detailed experimental theoretical studies, found that photoluminescence phenomena arise existence multiple luminescence centers, which form complex network structures through hydrogen, covalent, ionic bonds, thus stabilizing excitons enhancing optical addition, synthetic material shows application field encryption anticounterfeiting, achieving dynamic light display functions, improving security anticounterfeiting capabilities.

Language: Английский

Cascade energy transfer endows phosphorescent carbon dots-based films with tunable and broadband afterglow for fingerprint recognition and anticounterfeiting DOI

Zhanpeng Liu,

Xinyi Ding, Lin Cai

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160311 - 160311

Published: Feb. 1, 2025

Language: Английский

Citations

1
Dynamic encryption enabled by circularly polarized carbon dot-based afterglow composites featuring hierarchical tri-mode thermochromic emission DOI
H. Wang,

Longming Jin,

Wanqi Mo

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162427 - 162427

Published: April 1, 2025

Language: Английский

Citations

1
Recent Advances in Highly Luminescent Carbon Dots DOI Creative Commons
Yupeng Liu, Zhujun Huang, Xuanye Wang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract Highly luminescent carbon dots (CDs) have garnered significant attention and are increasingly utilized in various fields. Despite its importance, there has been a lack of comprehensive reviews focusing specifically on highly CDs. It is aimed here to fill that gap by exploring CDs with high photoluminescence quantum yield (PLQY), starting an examination the mechanisms underlying The selection synthetic raw materials preparation methods along research progress reviewed information across bands then statistically summarized several tables. Subsequently, structural features, synthesis methods, purification strategies lead PLQY based analyzing collected examples Furthermore, luminescent‐based multifunctional applications bioimaging, light‐emitting diodes, solar concentrators, lasers introduced. Finally, current landscape evaluated, existing challenges identified, feasible directions proposed for future development.

Language: Английский

Citations

5
Time‐Division Multiplexing Physical Unclonable Functions Based on Multicolor Phosphorescent Carbon Dots DOI
Chao Li, Fuhang Jiao, Lin Dong

et al.

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

Published: April 13, 2025

Abstract Phosphorescent materials offer a promising approach to information encryption due their long luminescence lifetimes and high signal‐to‐noise ratios. However, fixed phosphorescent patterns are vulnerable imitation over time, limiting effectiveness in advanced encryption. Here, time‐division multiplexing physical unclonable function (TDM‐PUF) label utilizing multicolor carbon dots (CDs) is proposed that leverages variations wavelength lifetime construct time‐resolved, multidimensional cryptographic protocols. Efficient multi‐color phosphorescence CDs achieved by enhancing intersystem crossing, suppressing non‐radiative transitions through confinement effects, regulating emission spectra via energy transfer. The random spatial distribution unpredictable emissions of significantly enhance the complexity PUF system, thereby fortifying its defenses against mimicry attacks. Furthermore, this system exhibits multiple optical responses allowing correct recognition only at specified time nodes, achieving time‐resolved anti‐counterfeiting. Finally, segmenting labels based on color channels, non‐overlapping multi‐time segments achieved, enabling highly secure multiplexed study provides competitive anti‐counterfeiting inspires development novel strategies.

Language: Английский

Citations

0
Enhanced Afterglow Performance of Carbon Dots via Surface Modification Engineering DOI

Yulong Zhu,

Decheng Li,

Jinhao Zang

et al.

Journal of Luminescence, Journal Year: 2025, Volume and Issue: unknown, P. 121271 - 121271

Published: April 1, 2025

Language: Английский

Citations

0
Dual-mode thermochromic afterglow in phosphorus-doped carbon dot composites for visible light-activated information encryption DOI
Xin Bao, Xiaodong Zhu, Zhen Tian

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 690, P. 137331 - 137331

Published: March 14, 2025

Language: Английский

Citations

0
Construction of Multicolor Phosphorescent Carbon Dots via Multiple Confinement Strategies DOI
Nan Yang, Zhenzhen Li, Chao Li

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Organic room-temperature phosphorescence (RTP) materials are widely used in optoelectronics, biological imaging, and chemical sensing because of their long luminous lifetime excellent signal-to-noise ratio. Although multicolor RTP systems show important potential for information encryption, spin-orbit coupling (SOC) weakening exciton quenching caused by molecular motion environmental factors limit stable triplet generation, thereby reducing the quantum yield brightness materials. In this study, we developed a novel carbon dot (CD) to effectively solve these problems using multiconfinement system, demonstrating excitation-dependent properties. The synthesized CDs varies from green orange under different excitation wavelengths, with high photoluminescent (54.22%) (39.53 cd/m2). Through detailed experimental theoretical studies, found that photoluminescence phenomena arise existence multiple luminescence centers, which form complex network structures through hydrogen, covalent, ionic bonds, thus stabilizing excitons enhancing optical addition, synthetic material shows application field encryption anticounterfeiting, achieving dynamic light display functions, improving security anticounterfeiting capabilities.

Language: Английский

Citations

0