High-efficiency NP-carbon dots above 60% with both delayed fluorescence and room-temperature phosphorescence

Xu, Bin; Hao, Qun; Tang, Xin; Chen, Menglu

doi:10.1039/d3cc04158a

Chem. Commun.

2023

DOI: 10.1039/d3cc04158a

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High-efficiency NP-carbon dots above 60% with both delayed fluorescence and room-temperature phosphorescence

Bin Xu,

Qun Hao,

Xin Tang

et al.

Abstract: This report introduces a groundbreaking technique for synthesizing carbon dots (CDs) that display both delayed fluorescence and room-temperature phosphorescence. This achievement is made possible through a straightforward solvent-thermal reaction, followed...

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2024

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Cited by 3 publications

References 26 publications

(28 reference statements)

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Carbon Dots: A Bright Future as Anticounterfeiting Encoding Agents

Simões,

Rodrigues,

Neto

et al. 2024

Small

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Counterfeit products and data vulnerability present significant challenges in contemporary society. Hence, various methods and technologies are explored for anticounterfeiting encoding, with luminescent tracers, particularly luminescent carbon dots (CDs), emerging as a notable solution. CDs offer promising contributions to product security, environmental sustainability, and the circular economy. This critical review aims to highlight the luminescence responsiveness of CDs to physical and chemical stimuli, achieved through nanoengineering their chemical structure. The discussion will delve into the various tunable luminescence mechanisms and decay times of CDs, investigating preferential excitations such as up‐conversion, delayed fluorescence, fluorescence, room temperature phosphorescence, persistent luminescence, energy and charge transfer, as well as photo‐chemical interactions. These insights are crucial for advancing anticounterfeiting solutions. Following this exploration, a systematic review will focus on the research of luminescent CDs' smart encoding applications, encompassing anticounterfeiting, product tracing, quality certification, and information encryption. Finally, the review will address key challenges in implementing CDs‐based technology, providing specific insights into strategies aimed at maximizing their stability and efficacy in anticounterfeiting encoding applications.

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Carbon Dots: A Bright Future as Anticounterfeiting Encoding Agents

Simões,

Rodrigues,

Neto

et al. 2024

Small

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Ultralong sodium alginate-based room temperature phosphorescence materials with advantages of color tunability, flexibility and facile large-area fabrication

Sun,

Zhu,

et al. 2024

Chemical Engineering Journal

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Dual-Emission Afterglow of Carbon Dots Induced by an Inorganic Salt for Anticounterfeiting and Temperature Sensing

Wang,

Sun

2024

Langmuir

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Afterglow carbon dots (CDs) have been extensively studied for sensing and anticounterfeiting because they can effectively block out the interference of background light. In this work, m-APBA CDs are obtained hydrothermally with m-aminophenylboric acid (m-APBA) and different kinds of inorganic salts (IS). When m-APBA CDs are combined with CaCl 2 and MgCl 2 , dual-emission afterglow can be achieved based on CaCl 2 and MgCl 2 having the strongest aggregation ability, high charge density, structural confinement, and defects with respect to m-APBA CDs. The as-obtained CDs@CaCl 2 exhibits a dual mode afterglow with a quantum yield of 4.81% and lifetimes of 352 ms (delayed fluorescence) and 205 ms (phosphorescence). The afterglow of CDs@IS can be excited by both UV and visible light at the same time, which could be recorded for about 8 and 4 s. This unique method of inducing the m-APBA CD afterglow has the advantages of simple synthesis, low cost, and adjustable afterglow emission. Moreover, CDs@IS showed exceptional performance in anticounterfeiting and temperature sensing, further establishing its practical utility.

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High-efficiency NP-carbon dots above 60% with both delayed fluorescence and room-temperature phosphorescence

Abstract: This report introduces a groundbreaking technique for synthesizing carbon dots (CDs) that display both delayed fluorescence and room-temperature phosphorescence. This achievement is made possible through a straightforward solvent-thermal reaction, followed...

Cited by 3 publications

References 26 publications

Carbon Dots: A Bright Future as Anticounterfeiting Encoding Agents

Carbon Dots: A Bright Future as Anticounterfeiting Encoding Agents

Ultralong sodium alginate-based room temperature phosphorescence materials with advantages of color tunability, flexibility and facile large-area fabrication

Dual-Emission Afterglow of Carbon Dots Induced by an Inorganic Salt for Anticounterfeiting and Temperature Sensing

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