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
Small, Journal Year: 2023, Volume and Issue: 19(31)
Published: Feb. 21, 2023
Abstract Carbon dots (CDs) have gradually become a new generation of nano‐luminescent materials, which received extensive attention due to excellent optical properties, wide source raw low toxicity, and good biocompatibility. In recent years, there are many reports on the luminescent phenomenon CDs, great progress has been achieved. However,there rarely systematic summaries CDs with persistent luminescence. Here, summary including luminous mechanism, synthetic strategies, property regulation, potential applications, is given. First, brief introduction given development materials. Then, mechanism afterglow from room temperature phosphorescence (RTP), delayed fluorescence (DF), long luminescence (LPL) discussed. Next, constructed methods materials summarized two aspects, matrix‐free self‐protected matrix‐protected CDs. Moreover, regulation properties color, lifetime, efficiency presented. Afterwards, applications such as anti‐counterfeiting, information encryption, sensing, bio‐imaging, multicolor display, LED devices, etc., reviewed. Finally, an outlook proposed.
Language: Английский
Citations
69
ACS Nano, Journal Year: 2023, Volume and Issue: 17(7), P. 6912 - 6921
Published: March 31, 2023
Chiral carbon dots (C-dots) with a circularly polarized fluorescence (CPF) property have attracted tremendous attention due to their significant applications in chiral optoelectronics and theranostics. However, constructing room-temperature phosphorescent (CPRTP) C-dots remains great challenge. Herein, strategy is established achieve efficient CPF CPRTP emissions C-dots/chiral helical polymer bilayer composite film. Taking advantage of the filter effect polymer, intense large dissymmetric factors up 1.4 × 10-1 1.2 10-2 are respectively obtained, even though there only simple interface contact between layer layer. More importantly, white-color emission multiple information display encryption further realized based on prepared luminescent films.
Language: Английский
Citations
68
Small Structures, Journal Year: 2023, Volume and Issue: 4(5)
Published: Feb. 2, 2023
As emerging carbon‐based nanomaterials, carbon dots (CDs) are widely studied with regard to their luminescent properties. CDs obtained by the bottom‐up method exhibit polymeric characteristics after crosslinking, polymerization, and incomplete carbonization processes, herein referred as carbonized polymer (CPDs). In recent years, large progress has been achieved on room‐temperature phosphorescence (RTP) properties of CPDs. The developments synthesis strategies for RTP CPD materials reviewed. However, less attention devoted influence structures materials. Polymer a common feature extensive key factors facilitating Herein, effects emission self‐protective matrix‐assisted discussed. It is considered that can effectively immobilize subluminophores protect triplet excited states facilitate crosslink‐enhanced (CEE) effect proposed further explain materials, which provide an effective strategy Benefiting from CEE effect, efficient be applications then briefly summarized.
Language: Английский
Citations
60
Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 498, P. 215469 - 215469
Published: Sept. 29, 2023
Language: Английский
Citations
53
Nano Today, Journal Year: 2024, Volume and Issue: 55, P. 102200 - 102200
Published: Feb. 13, 2024
Language: Английский
Citations
50
Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 12(7)
Published: Oct. 26, 2023
Abstract Colloidal carbon dots (C‐dots) are considered as promising heavy‐metal‐free materials to achieve room‐temperature phosphorescence (RTP) properties for applications, such photoelectronic devices, information encryption, and bio‐imaging. However, most of the current obtained RTP C‐dots have a short lifetime with relatively low quantum yield (QY). In this work, large‐scale synthesized via vacuum heating approach multiple emissions (blue, green, yellow), long high 1.92 s, QY 34.4% by selecting different types precursors, which is superior reported C‐dots. The atoms doping strong bonding between neighbored promoted contributes excellent properties. As proof‐of‐concept, as‐obtained used optical ink flexible security codes, exhibiting bright shape 1.37 s. This work offers an efficient producing high‐quality C‐dots, can be applied anti‐counterfeiting encryption systems.
Language: Английский
Citations
45
Carbon, Journal Year: 2024, Volume and Issue: 219, P. 118838 - 118838
Published: Jan. 17, 2024
Language: Английский
Citations
33
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 503, P. 215642 - 215642
Published: Jan. 2, 2024
Language: Английский
Citations
32
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)
Published: March 7, 2024
Abstract Comprehensive research into afterglow emission in the near‐infrared (NIR) region of carbon dots (CDs) is currently lacking. In this study, highly efficient multicolor CDs are synthesized with fluorescence from blue to NIR using Rhodamine 6G. Boron oxide (B 2 O 3 ) employed as a matrix for encapsulating and confining CDs, inhibiting triplet exciton quenching. Furthermore, structural rigidity enhanced due formation carbon‐boron (C─B) covalent bonds between B , achieving tunable ranging 463 722 nm lifetimes up 801 ms. The green–yellow composite exhibits an impressive quantum yield 37.67% while demonstrating thermally activated delayed (TADF). Thus, coated onto alternating‐current light‐emitting diode (BAC‐LED) fabricate white AC‐LED, which successfully prepared Commission Internationale de L'Eclairage (CIE) at coordinates (0.32, 0.34), accompanied by color rendering index (CRI) reaching 81.1. bright compensates zero‐point flickering BAC‐LED, resulting stable gentle emission. potential applications these luminescent materials optoelectronic devices undoubtedly widened remarkable advancement.
Language: Английский
Citations
30
Nano Letters, Journal Year: 2024, Volume and Issue: 24(6), P. 1859 - 1866
Published: Jan. 30, 2024
Afterglow materials with time-dependent color output emerge as huge prospects in advanced optical information encryption but remain a formidable challenge due to the limited exciton transfer from single emission center. Here, multiple afterglow evolutions are achieved by strategy of controllable assembly dual carbon dots (CDs) an individual and decay rate into RHO zeolite. The possesses high controllability such that B-CDs G-CDs can be independently generated situ embedded matrix; particular, doped amount two kinds CDs adjusted conveniently produce interesting variable colors. Triggered different excitations, prepared B&G-CDs@RHO composites exhibit conversion TADF RTP behaviors, well deep-blue green (365 nm excitation) static cyan (254 excitation). unique luminescence excellent stability allow composite applied high-security levels.
Language: Английский
Citations
18