Abstract
The use of biological labels has greatly assisted the study of complex biochemical interactions and the monitoring of their localization during disease diagnosis and therapy. Fluorescent labeling using organic fluorophores, genetically encoded fluorescent proteins, and semiconducting quantum dots (QDs) has been demonstrated as an indispensable tool for both in vivo and in vitro cellular imaging. In contrast to the conventional organic dyes and the fluorescent proteins showing several deficiencies like broad-spectrum profiles, very short excited-state lifetimes, and their sensitivity to photobleaching, QDs have been intensively studied as a promising luminescent probe due to high resistance to photobleaching, large stokes shift, narrow size-dependent emission spectra, broad excitation spectra, and long fluorescence lifetime. In addition, they have been engineered to carry therapeutic agents for simultaneous diagnosis and therapy (theranostics). Despite these notable advantages, the implementation of QDs to a broader clinical setting is still limited because of their intrinsic toxicity and the potential environmental concerns associated with the heavy metals present in the QDs.
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Jung, Y., Choi, Y., Kim, BS. (2016). Functionalized Carbon Nanodots for Biomedical Applications. In: Zhang, M., Naik, R., Dai, L. (eds) Carbon Nanomaterials for Biomedical Applications. Springer Series in Biomaterials Science and Engineering, vol 5. Springer, Cham. https://doi.org/10.1007/978-3-319-22861-7_10
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