Electrochemical template synthesis of noble metal and semiconducting quantum dots

conference paper

English

Luminescent quantum dots (QDs) are increasingly attracting the attention as possible optical detectors of biomolecules, such as proteins, DNA, etc. Large amount of different factors influences the selection of material for QDs synthesis when dealing with substances from living organisms. Hence in this paper, non-toxic and biocompatible titanium dioxide (TiO2) and gold were chosen as a suitable material for QDs creation employing template based non-lithographic technique. Namely, nanoporous alumina template was used for the fabrication of (i) TiO2 QDs by anodic oxidation of sputtered Ti film on a silicon wafer and (ii) Au QDs by galvanic deposition from Au containing electrolyte on nickel coated silicon wafer. Self-ordered TiO2 and Au QDs were characterized by SEM, which confirmed that the size of QDs satisfies the requirement of quantum confinement effect. Fluorescence spectroscopic study was also performed, comparing the emission spectra of annealed and non-annealed QDs and showing that the annealing is essential for achieving desired fluorescence properties of TiO2 QDs.

quantum dots, quenching, BSA

BEDLEK, M.; HRDÝ, R.; DRBOHLAVOVÁ, J.; HUBÁLEK, J.

2012

30. 5. 2012

Mendelova univerzita v Brně

Brno

978-80-7375-618-5

XII. Pracovní setkání fyzikálních chemiků a elektrochemiků

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