Multicolor Afterglow Carbon Dots: Luminescence Regulation, Preparation, and Application

Zhang, Yuqi; Chen, Lin; Liu, Bin; Yu, Shiping; Yang, Yongzhen; Liu, Xuguang

doi:10.1002/adfm.202315366

Cited by 15 publications

(1 citation statement)

References 121 publications

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“…The multicolor carbon dots in this study were synthesized using a facile bottom-up approach, which is a simple, accessible, and fast method [37][38][39][40]. The required multicolored carbon dots were synthesized with co-doping phenylenediamine isomers (o-PD, m-PD, and p-PD) using boric acid and phosphoric acid, and the prepared carbon dots were used as an encryption material.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of B/P Co-Doping Multicolor Emissive Carbon Dots Derived from Phenylenediamine Isomers and Their Application in Anticounterfeiting

2024

Nanomaterials

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Carbon dots (CDs) possess a considerable number of beneficial features for latent applications in biotargeted drugs, electronic transistors, and encrypted information. The synthesis of fluorescent carbon dots has become a trend in contemporary research, especially in the field of controllable multicolor fluorescent carbon dots. In this study, an elementary one-step hydrothermal method was employed to synthesize the multicolor fluorescent carbon dots by co-doping unique phenylenediamine isomers (o-PD, m-PD, and p-PD) with B and P elements, which under 365 nm UV light exhibited signs of lavender-color, grass-color, and tangerine-color fluorescence, respectively. Further investigations reveal the distinctness in the polymerization, surface-specific functional groups, and graphite N content of the multicolor CDs, which may be the chief factor regarding the different optical behaviors of the multicolor CDs. This new work offers a route for the exploration of multicolor CDs using B/P co-doping and suggests great potential in the field of optical materials, important information encryption, and commercial anticounterfeiting labels.

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Section: Resultsmentioning

confidence: 99%

Facile Synthesis of B/P Co-Doping Multicolor Emissive Carbon Dots Derived from Phenylenediamine Isomers and Their Application in Anticounterfeiting

2024

Nanomaterials

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Multifunctional Thermally Activated Delayed Fluorescence Carbon Dots for Temperature‐Responsive Sensor, Information Encryption, and Organelle Imaging

Li,

Sun,

Zhang

et al. 2024

Adv Funct Materials

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Thermally activated delay fluorescence (TADF) has great potential for information encryption, temperature detection, and bioimaging due to its long‐lived luminescence, temperature‐sensitive and high signal‐to‐noise ratio. However, it is still a challenge to establish TADF in aqueous environments. In this study, the composite with TADF (M‐FNCDs) is prepared using fluorine‐nitrogen co‐doped carbon dots (FNCDs) and melamine. It is worth mentioning that the M‐FNCDs show stable TADF under long‐wavelength excitation (470 nm) in aqueous environments. Moreover, the M‐FNCDs has distinctive temperature‐responsive properties and exhibit good linear relationships in the temperature range of 77–370 K. Simultaneously, M‐FNCDs suspension as the ink is utilized to realize information encryption/decryption due to their afterglow cannot be quenched in an aqueous solution. More importantly, M‐FNCDs with biocompatibility can target the mitochondria and lysosomes of living cells, and for the first time achieve the high signal‐to‐noise ratio and low background signal afterglow imaging of organelles. This work proposes a new strategy to prepare the stable TADF in aqueous solutions under long‐wavelength excitation and extend the TADF material potential applications in the future.

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Advance of Near‐Infrared Emissive Carbon Dots in Diagnosis and Therapy: Synthesis, Luminescence, and Application

Hu,

Zheng,

Yang

et al. 2024

Adv Healthcare Materials

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Carbon dots (CDs) with good optical properties, biocompatibility, easy functionalization, and small size have attracted more and more attention and laid a good foundation for their applications in the biomedicine field. CDs emitted in near‐infrared regions (NIR‐CDs) can achieve high penetration depth imaging and produce high cytotoxic substance for disease treatment. Therefore, NIR‐CDs are promising materials to realize high‐quality imaging‐guided diagnostic and therapeutic integration. This review first introduces the current mainstream synthesis methods of NIR‐CDs by “top–down” and “bottom–up”. Second, the luminescence modes of NIR‐CDs are introduced, and the luminescence mechanisms based on carbon core state, surface state, molecular state, and crosslinking enhanced emission are summarized. Third, the applications and principles of NIR‐CDs in imaging, drug delivery, and non‐invasive therapeutics are introduced from a view of diagnosis and therapy. Finally, their prospects and challenges in biomedical and biotechnological applications are outlined.

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Multicolor Afterglow Carbon Dots: Luminescence Regulation, Preparation, and Application

Cited by 15 publications

References 121 publications

Facile Synthesis of B/P Co-Doping Multicolor Emissive Carbon Dots Derived from Phenylenediamine Isomers and Their Application in Anticounterfeiting

Facile Synthesis of B/P Co-Doping Multicolor Emissive Carbon Dots Derived from Phenylenediamine Isomers and Their Application in Anticounterfeiting

Multifunctional Thermally Activated Delayed Fluorescence Carbon Dots for Temperature‐Responsive Sensor, Information Encryption, and Organelle Imaging

Advance of Near‐Infrared Emissive Carbon Dots in Diagnosis and Therapy: Synthesis, Luminescence, and Application

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