Materials Horizons, Journal Year: 2023, Volume and Issue: 11(1), P. 113 - 133
Published: Oct. 5, 2023
This is a comprehensive and systematic review focusing on CDs@IMs from multiple perspectives of construction, performance, mechanism, multifunctional applications.
Language: Английский
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(7)
Published: Nov. 3, 2023
Abstract Room temperature phosphorescent carbon dots (RTP CDs) have received increasing attention in recent years due to their outstanding optical properties and potential applications. It is worth noting that RTP CDs aqueous solution inspired special interests because of low toxicity, long lifetime, ability avoid autofluorescence background fluorescence, exhibiting wide application prospects time‐resolved biological imaging sensing. However, achieving solutions remains a considerable challenge water molecules oxygen can cause the deactivation triplet‐state excitons, resulting phosphorescence quenching. Several strategies been proposed counter problem including encapsulated rigid matrix, hydrogen bonding, covalent bonding fixation. Consequently, more significant number materials with excellent stability, multicolor are successfully obtained. Herein, development as well corresponding fabricated luminescence mechanism detailly summarized reviewed. Furthermore, various applications water‐phase information security, sensing, bioimaging, light‐emitting diodes, fingerprinting also discussed. Finally, an outlook on proposed.
Language: Английский
Citations
33
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(37)
Published: May 23, 2023
Abstract Carbon dots (CDs) demonstrate great superiority in optoelectronic devices due to their tunable emission and photobleaching resistance properties. Although the fluorescence of CDs solution has been extensively studied, solid‐state (SSF) mechanism still remains largely unexplored experimentally. Herein, fluorescent with unique clusteroluminescence (CL) generated from clusterization‐triggered are designed based on condensation between precursors carboxyl amino groups. The obvious concentration‐dependent quench‐resistant SSF, which is attributed activation amide (n, π *) transition by clusterization process. This sub‐luminophore non‐luminescent at long wavelengths isolated state, while it induces photoluminescence redshift via through‐space interaction aggregated state. Besides, SSF can be tuned quenched quenching‐resistant through formation, dominant center solids switchable surface edge state passivation. Based long‐wavelength CL feature, high‐purity red light‐emitting diode exhibiting 656‐nm warm light fabricated Commission Internationale de l´Eclairage (CIE) coordinates (0.66, 0.34) unchanged wavelength under different driving currents. These findings provide novel insights into a universal strategy construct materials tailored
Language: Английский
Citations
32
Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 467, P. 143384 - 143384
Published: May 9, 2023
Language: Английский
Citations
30
Small, Journal Year: 2023, Volume and Issue: 20(23)
Published: Dec. 21, 2023
Abstract Hour‐level persistent room temperature phosphorescence (RTP) phenomena based on multi‐confinement carbon dots (CDs) are reported. The CDs‐based system reported here (named Si‐CDs@B 2 O 3 ) can be efficiently synthesized by a simple pyrolysis method compared to the established RTP systems. binding modes of CDs, silica (SiO ), and boron oxide (B deduced from series characterizations including XRD, FT‐IR, TEM characterization. Further studies show that formation covalent bonds between B , SiO CDs play key role in activating preventing its quenching. This is rare example exhibits hourly under environmental conditions. Finally, applications demonstrated for anti‐counterfeiting, long‐duration imaging, fingerprinting. synthetic strategy expected provide strong technical support preparation pave way synthesis future.
Language: Английский
Citations
27
Sensors and Actuators B Chemical, Journal Year: 2023, Volume and Issue: 390, P. 133946 - 133946
Published: May 6, 2023
Language: Английский
Citations
26
Small, Journal Year: 2023, Volume and Issue: 19(24)
Published: Feb. 26, 2023
As a new type of solution-processed nano-laser material, carbon dots (CDs) have shown considerable potential in optical communication, laser displays, micro/nano processing, and biomedicine. Reducing the threshold gain material is significance for further development CDs' applications field lasers. A series blue-emissive CDs (B-CDs) are synthesized by changing molar ratios precursors (citric acid (CA): L-Cysteine (L-Cys)). B-CDs structure nanoparticles with their surface being modified 5-oxo-3,5-dihydro-2Hthiazolo [3,2-a]pyridine-7-carboxylic (TPCA). The can only be generated when ratio between 1:1 2:1. With an increase this ratio, decreases from 341.6 to 165.5 mJ cm-2 . decrease attributed radiation transition rate centralized sp3 -related excited state levels, which favorable light amplification population inversion. These results will instructional reasonably design CDs-based materials prompt use practical photonics.
Language: Английский
Citations
23
Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 5680 - 5687
Published: March 4, 2024
Language: Английский
Citations
15
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 486, P. 150436 - 150436
Published: March 16, 2024
Language: Английский
Citations
15
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)
Published: Feb. 14, 2024
Abstract Studying the phosphorescent mechanisms of carbon nanostructures synthesized by “bottom‐up” approach is key to understanding structure modulation and interfacial properties nanostructures. In this work, relationships among symmetry precursors in synthesis, structures products, phosphorescence lifetimes graphene quantum dots (GQDs) are studied. The matching formation a D 6h graphene‐like framework considered factor controlling separability sp 2 domains GQDs. As GQDs increases, (14.8–125.5 ms) solid state can be tuned. Machine learning used define degree disorder ( S ) GQD structure, which quantitatively describes different space groups precursors. negative correlation between oscillator strength uncovered. Therefore, recognized as reflective structure. Finally, based on correlations found GQDs, with an ultralong lifetime (28.5 s) obtained. Moreover, visible emission (435–618 nm) synthesized.
Language: Английский
Citations
13
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(26)
Published: Feb. 25, 2024
Abstract Constructing a library of stable phosphors with unconventional fluorescence (FL) and room temperature phosphorescence (RTP) color combination is an effective approach to enhance anti‐counterfeiting strength, but remains challenge. Herein, one‐step strategy proposed fabricate ultra‐stable CsPbX 3 /carbon dots (CDs) @NH 4 AlP 2 O 7 (X = Cl, Br, I) nanocomposites (PCPNs) full‐spectrum FL emission constant short‐wavelength blue RTP emission, breaking the conventional luminescent properties that generally exhibit obvious wavelength red‐shifts compared FL. The enhanced full‐color (457–612 nm) emissions are implemented by adjusting halogen compositions, which attributed as dominant center. Owing CDs, long‐lived lasting 12 s observed from PCPNs. Additionally, PCPNs remarkable tolerance prolonged ultraviolet irradiation erosion solutions various pH solvents, supported NH inert shell stabilizing perovskite structure triplet state. When ink based on printed substrates, fine labels combinations formed show excellent solvent resistance mechanical stability. This study provides fresh perspectives development security strength long‐term effects.
Language: Английский
Citations
11