The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.
Near‐Infrared Excitation/Emission and Multiphoton‐Induced Fluorescence of Carbon Dots
Abstract
Carbon dots (CDs) have significant potential for use in various fields including biomedicine, bioimaging, and optoelectronics. However, inefficient excitation and emission of CDs in both near‐infrared (NIR‐I and NIR‐II) windows remains an issue. Solving this problem would yield significant improvement in the tissue‐penetration depth for in vivo bioimaging with CDs. Here, an NIR absorption band and enhanced NIR fluorescence are both realized through the surface engineering of CDs, exploiting electron‐acceptor groups, namely molecules or polymers rich in sulfoxide/carbonyl groups. These groups, which are bound to the outer layers and the edges of the CDs, influence the optical bandgap and promote electron transitions under NIR excitation. NIR‐imaging information encryption and in vivo NIR fluorescence imaging of the stomach of a living mouse using CDs modified with poly(vinylpyrrolidone) in aqueous solution are demonstrated. In addition, excitation by a 1400 nm femtosecond laser yields simultaneous two‐photon‐induced NIR emission and three‐photon‐induced red emission of CDs in dimethyl sulfoxide. This study represents the realization of both NIR‐I excitation and emission as well as two‐photon‐ and three‐photon‐induced fluorescence of CDs excited in an NIR‐II window, and provides a rational design approach for construction and clinical applications of CD‐based NIR imaging agents.
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Cites
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Cited by
Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications
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Optical nano-agents in the second near-infrared window for biomedical applications
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Versatile Types of Organic/Inorganic Nanohybrids: From Strategic Design to Biomedical Applications
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Carbon quantum dots: Preparation, optical properties, and biomedical applications
Yang, H.-L., Bai, L.-F., Geng, Z.-R., Chen, H., Xu, L.-T., Xie, Y.-C., Wang, D.-J., Gu, H.-W., & Wang, X.-M. (2023) · Materials Today Advances · doi:10.1016/j.mtadv.2023.100376 · Cited by 409
Metadata
- Authors
- Li, D., Jing, P., Sun, L., An, Y., Shan, X., Lu, X., Zhou, D., Han, D., Shen, D., Zhai, Y., Qu, S., Zbořil, R., & Rogach, A. L.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2018-02-07
- Volume
- 30
- Issue
- 13
- Pages
- e1705913-e1705913
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2790739667
- Cited by
- 532
- References
- 41
- FWCI
- 21.51
- Type
- journal article
- Language
- en
- Open access
- closed
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