High‐Temperature Resistance Photoluminescence Carbonized Polymer Dots Through Equilibrium Bi‐Confinement Effects DOI
Yu Shen, Chengyang Luo, Cheng Chen

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 13, 2024

Abstract Carbon dots are emerging luminescent nanomaterials that have drawn considerable attention due to their abundance, environmental friendliness, and customizable optical properties. However, susceptibility temperature‐induced vibrational exciton changes the tendency thermal quenching of emission hindered practical applications. Here, a method is reported for achieving high‐temperature photoluminescence carbonized polymer (CPDs) through bi‐confinement approach involves highly cross‐linked network rigid Al 2 O 3 matrix. As temperature increased from 303 500 K, fluorescence phosphorescence intensities CPDs@Al remained virtually unchanged, with duration exceeding 150 h at K. Additionally, composites different degrees carbonization exhibit dynamic excitation‐dependent properties, which can be patterned multiple information encryption application. This work provides concept designing stable luminous CPDs under harsh conditions, thus expanding potential application range.

Язык: 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

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160311 - 160311

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1
g-C3N4/PP-CDs Heterostructure with Lewis acidity and alkalinity promoted photocatalytic CO2 reduction to CH3OH DOI
Yating Zhang,

Xiaomei Ma,

Keke Li

и другие.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер unknown, С. 135676 - 135676

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

5
Single-atom copper-activated carbon dots@silica nanozymes with neutral-pH peroxidase-like activity and room-temperature phosphorescence for dual-mode glyphosate detection DOI

Meng-Xian Liu,

Wen-Ye Liu,

Huiyong Wang

и другие.

Chemical Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A single-atom CDs@SiO 2 @Cu nanozyme integrates neutral pH peroxidase-like activity and long-lived room-temperature phosphorescence, enabling selective sensitive dual-mode glyphosate detection.

Язык: Английский

Процитировано

0
Breaking the Spin-Forbidden Restriction to Achieve Long Lifetime Room-Temperature Phosphorescence of Carbon Dots DOI

Zengsheng Guo,

Fangzheng Qi,

Juan Dong

и другие.

Nano Letters, Год журнала: 2024, Номер unknown

Опубликована: Дек. 20, 2024

Room-temperature phosphorescent (RTP) carbon dots (CDs) demonstrate significant potential applications in the field of information anticounterfeiting due to their excellent optical properties. However, RTP emission CDs remains significantly limited spin-forbidden properties triplet exciton transitions. In this work, an situ nitrogen doping strategy was employed design and construct strong spin–orbit coupling nitrogen-doped with mesoporous silica alumina (N-CDs@MS@Al2O3) composites. Both experimental results theoretical calculations confirmed that formation 1(n, π*) following introduction breaks restriction from 1(π, 3(π, π*), thereby enhancing coupling, which further promotes intersystem crossing leads effective population excitons. The designed N-CDs@MS@Al2O3 benefiting impressive long lifetime 3.18 s demonstrates application prospects multilevel encryption. This work provides a new concept boost CDs.

Язык: Английский

Процитировано

2
Promoting the Efficiency of Room-Temperature Phosphorescence by Forming the Composite and Employing It for Fingerprint Detection DOI

Xue Lv,

Haoda Zhang,

Chong Li

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Дек. 10, 2024

Currently, carbon dots (CDs) with room-temperature phosphorescence (RTP) show bright prospects in multiple fields, owing to their tunable wavelengths and large Stokes shifts. Howbeit, obtaining the long-lived efficient RTP of CDs still encounters a different kind challenge. Here, we originally prepared (CDs@β-GPA) β-guanidinopropionic acid diethylenetriamine pentamethylene phosphonic acid, CDs@β-GPA exhibited obvious green when fixed on filter paper. Importantly, introduction boric (BA) into resulted stabilized triplet excitons by forming composite CDs@β-GPA/BA through covalent coupling, optical band gap was effectively reduced nonradiative transitions were inhibited, thus leading significantly prolonged lifetime up 1.35 s. Meanwhile, also acquired phosphorescent emission excited visible light. This strategy may broaden approaches produce long-lifetime high-efficiency material. Moreover, successfully employed fields fingerprint detection advanced information encryption.

Язык: Английский

Процитировано

0
High‐Temperature Resistance Photoluminescence Carbonized Polymer Dots Through Equilibrium Bi‐Confinement Effects DOI
Yu Shen, Chengyang Luo, Cheng Chen

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 13, 2024

Abstract Carbon dots are emerging luminescent nanomaterials that have drawn considerable attention due to their abundance, environmental friendliness, and customizable optical properties. However, susceptibility temperature‐induced vibrational exciton changes the tendency thermal quenching of emission hindered practical applications. Here, a method is reported for achieving high‐temperature photoluminescence carbonized polymer (CPDs) through bi‐confinement approach involves highly cross‐linked network rigid Al 2 O 3 matrix. As temperature increased from 303 500 K, fluorescence phosphorescence intensities CPDs@Al remained virtually unchanged, with duration exceeding 150 h at K. Additionally, composites different degrees carbonization exhibit dynamic excitation‐dependent properties, which can be patterned multiple information encryption application. This work provides concept designing stable luminous CPDs under harsh conditions, thus expanding potential application range.

Язык: Английский

Процитировано

0