Facile heat reflux synthesis of blue luminescent carbon dots as optical nanoprobes for cellular imagingElectronic supplementary information (ESI) available: Fluorescence spectra, calculation data of quantum yield. See DOI: 10.1039/c6nj02702d

We rapidly prepared photoluminescent carbon dots (CDs) using a single-step heat reflux method with l -glutamic acid as the carbon source. The as-prepared CDs possessed a quasispherical morphology with an average diameter of approximately 5.42 nm and a quantum yield of approximately 6.3%. The CDs cle...

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Bibliographic Details
Main Authors: Zhang, Xianfeng, Lu, Jingbo, Li, Xianqing, Chai, Liucheng, Jiao, Yuhong
Format: Article
Language:English
Online Access:Get full text
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Summary:We rapidly prepared photoluminescent carbon dots (CDs) using a single-step heat reflux method with l -glutamic acid as the carbon source. The as-prepared CDs possessed a quasispherical morphology with an average diameter of approximately 5.42 nm and a quantum yield of approximately 6.3%. The CDs clearly exhibited excitation-dependent photoluminescence and good temperature-sensitive photoluminescence, as well as excellent water-solubility. Moreover, the luminescent CDs could not only be efficiently taken up by CT26.WT and CAL-27 cells but also exhibited low cytotoxicity and favourable biocompatibility, making them promising candidates for cellular imaging applications, among others. Carbon dots with good temperature-sensitive photoluminescence are facilely synthesized and their luminescence properties and cellular imaging applications are investigated.
ISSN:1144-0546
1369-9261
DOI:10.1039/c6nj02702d