Multicolor luminescence of carbon Dots: From mechanisms to applications

Jiang, Man; Sun, Yuzhu; Chen, Mingyue; Ji, Hongfei; Liu, Ying; Qin, Ruijie; Li, Xiyan; Gao, Hongling; Zhang, Ruizhong; Zhang, Libing

doi:10.1016/j.cej.2024.153761

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.153761

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Multicolor luminescence of carbon Dots: From mechanisms to applications

Man Jiang,

Yuzhu Sun,

Mingyue Chen

et al.

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Cited by 7 publications

References 139 publications

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Enabling Visualized Time‐Resolved Dynamic Discoloring Afterglow from Carbon Dots by Engineering Luminescent Centers and Trap‐States for Security Applications

Xu,

Cheng,

Wang

et al. 2024

Advanced Optical Materials

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Luminescent materials with time‐resolved dynamic discoloring afterglow (TDDA) hold significant potential for applications in anti‐counterfeiting and data encryption. However, the afterglows coming from organic systems are usually unidentifiable due to their shorter durations (less than 10 s). Achievement of long‐lasting and visually discernible TDDA remains highly desirable but challenging. In this work, the TDDA duration is successfully extended from less than 10 s to minutes by engineering the luminescent centers of carbon dots (CDs) and introducing deep trap‐states in a composite of CDs and carbon nitrides (CNs) (named Y‐CDs@CN). It is confirmed that the regulation of luminescent centers in CDs containing both C═N and C═O bonds is responsible for the color changes during TDDA from yellow to green. Moreover, the generation of deep trap states is found to be significant for prolonging the afterglow duration to minutes level through converting room temperature phosphorescence into long persistent luminescence, thus making the entire dynamic discoloring process being easily recognized to naked eyes. Furthermore, the afterglow of Y‐CDs@CN can also be excited by blue light and even using white light of a cell phone. To harness these characteristics, potential applications of Y‐CDs@CN for portable anti‐counterfeiting and multidimensional information encryption are primarily investigated.

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Enabling Visualized Time‐Resolved Dynamic Discoloring Afterglow from Carbon Dots by Engineering Luminescent Centers and Trap‐States for Security Applications

Xu,

Cheng,

Wang

et al. 2024

Advanced Optical Materials

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AIE‐Based & Organic Luminescent Materials: Nanoarchitectonics and Advanced Applications

Gawade,

Jadhav,

Bhosale

2024

Chemistry An Asian Journal

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Organic luminescence materials makes the molecule more enthusiastic in wide variety of applications. The luminescent organic materials are in a attraction of the researchers, and the Aggregation‐Induced Emission (AIE) is attributed to the occurrence that particular chromophores (typically fluorophores) display very low or nearly no emission in the monomolecular soluble state but become highly emissive when forming aggregates in solution or in solid state. This phenomenon is relatively abnormal when compared with many other traditional fluorophores. AIE research suppresses aggregation‐caused quenching (ACQ). Nevertheless, the carbon dots (CDs) and quantum dots have shown to have tyical florescence properties, therefore, recent years many researchers have also attracted for their developments. The CDs, luminescent, and AIE materials are not only used in biomedical applications and organic light‐emitting diodes but also in sensing, self‐assembly, and other areas. One should introduce promising material to a designed framework that exhibits AIE characteristics to ensure moral results in AIE. Amongest, AIE‐active tetraphenylethylene (TPE) is attractive fluorophores due to its easy synthesis strategy. This review article discusses the synthesis properties of TPE, CDs, and luminescent materials with a broad range of applications. We have outlined linear, branched‐shaped supramolecular, and hybrid macromolecules due to its potential in the future.

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Construction of dual emissive nanoprobes based on carbon dots and their ratiometric sensing applications

Li,

Dong,

Pang

et al. 2024

Diamond and Related Materials

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Multicolor luminescence of carbon Dots: From mechanisms to applications

Cited by 7 publications

References 139 publications

Enabling Visualized Time‐Resolved Dynamic Discoloring Afterglow from Carbon Dots by Engineering Luminescent Centers and Trap‐States for Security Applications

Enabling Visualized Time‐Resolved Dynamic Discoloring Afterglow from Carbon Dots by Engineering Luminescent Centers and Trap‐States for Security Applications

AIE‐Based & Organic Luminescent Materials: Nanoarchitectonics and Advanced Applications

Construction of dual emissive nanoprobes based on carbon dots and their ratiometric sensing applications

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