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TEMPERATURE-DEPENDENT TUNABLE PHOTOLUMINESCENCE PROPERTIES OF CARBON NANODOTS DERIVED FROM POLYETHYLENE GLYCOL

Fluorescent carbon dots (C-dots) are well known for their low cell-cytotoxicity, biocompatibility, low preparation cost, excitation dependent photoluminescence, and excellent photostability. Typically, raw C-dots have low quantum efficiency and thus researchers have been utilizing biocompatible polymers such as polyethylene glycol (PEG) as a passivation agent in order to increase fluorescence signal. In this work, we report fluorescent self-passivated carbon nanodots (CNDs) synthesized from PEG by using it as a carbon source as well as a passivating agent. Importantly, the addition of graphene quantum dots (GQDs) during the synthesis of self-passivated CNDs can tune photoluminescence property. The results of bioimaging and cytotoxicity test of self-passivated CNDs hold promises for biomedicine applications.

Identiferoai:union.ndltd.org:uky.edu/oai:uknowledge.uky.edu:chemistry_etds-1047
Date01 January 2014
CreatorsYeom, Sin Hea
PublisherUKnowledge
Source SetsUniversity of Kentucky
Detected LanguageEnglish
Typetext
Formatapplication/pdf
SourceTheses and Dissertations--Chemistry

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