Photoluminescence effects of graphitic core size and surface functional groups in carbon dots: COO- induced red-shift emission

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33151727" target="_blank" >RIV/61989592:15310/14:33151727 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S000862231400030X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S000862231400030X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.carbon.2014.01.008" target="_blank" >10.1016/j.carbon.2014.01.008</a>

Result language
angličtina
Original language name
Photoluminescence effects of graphitic core size and surface functional groups in carbon dots: COO- induced red-shift emission
Original language description
We present a simple molecular approach to control the lipophilic./hydrophilic nature of photoluminescent carbon dots (CDs) based on pyrolysis of alkyl gallate precursors. Depending on the gallic acid derivative used, CDs with different alkyl groups (methyl, propyl, lauryl) on the surface can be obtained by isothermal heating at 270 degrees C. This precursor-derived approach allows not only the control of lipophilicity but also the length of the particular alkyl chain enables the control over both the size and photoluminescence (PL) of the prepared CDs. Moreover, the alkyl chains on the CDs surface can be readily converted to carboxylate groups via a mild base hydrolysis to obtain water dispersible CD with a record biocompatibility. The observed differences in PL properties of CDs and time-resolved PL data, including contributions from carbogenic cores and surface functional group, are rationalized and discussed in detail using time-dependent density functional theory (TD-DFT) calculati
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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