CHARACTERIZATION OF FLUORESCENT CARBON DOTS FOR SENSORS CONCTRUCTION

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F15%3APU126950" target="_blank" >RIV/00216305:26620/15:PU126950 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

CHARACTERIZATION OF FLUORESCENT CARBON DOTS FOR SENSORS CONCTRUCTION

Original language description

Carbon dots (C-dots) are a new type of nanomaterial broadly used in sensing, imaging and distinct analytical applications. They possess several advantages over classical semiconductor quantum dots like higher biocompatibility and lower toxicity. In this study C-dots were successfully synthesized from citric acid as a carbon source and covered with poly-(ethylene glycol). Since precise nanoparticle characterization represents the key step in nanosensor construction, C-dots were characterized using several methods - UV/vis spectrophotometry, fluorescence spectroscopy, dynamic light scattering and electrochemistry. In C-dots absorption spectra with two local maxima at 280 and 330 nm corresponding to n-pi* and pi-pi* transition were observed. The maximal fluorescence of 2 +/- 0.5 nm sized C-dots were reached using excitation wavelength of 370 nm. The electrochemical analysis of C-dots using HMDE in Brdicka solution suggested, that this method can be used to determine the amount of PEG capping agent on the surface of C-dots nanocrystals.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

International Multidisciplinary Scientific GeoConference-SGEM

ISBN

978-619-7105-42-1

ISSN

1314-2704

e-ISSN

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Number of pages

6

Pages from-to

19-24

Publisher name

Neuveden

Place of publication

Neuveden

Event location

Albena, Bulharsko

Event date

Jun 18, 2015

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

000371601900003