Fluorescent Carbon Dots (CDs) as a pH Sensor

Abstract:

The pH-dependent properties of carbon dots (CDs), decorated with surface carboxylic acid functional groups, are described. Absorption, fluorescence emission measurements were used to study the reversible pH-dependent spectral response. The pH-dependent emissions of CDs demonstrate a strong dependence on the excitation wavelengths and make the as-prepared CDs a good ratiometric pH-sensor candidate. This green material CDs-based probe shows promising potential for probing pH in real sample and in vivo intracellular imaging.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 1319-1322
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.1319
• Online since: December 2011
• Authors: Feng Lin, Wei Na He, Xiang Qun Guo
• Keywords: Carbon Nanodots, Fluorescent, PH-Dependent Sensor

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