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Proceedings Paper

Chiral quantum dot based materials
Author(s): Joseph Govan; Alexander Loudon; Alexander V. Baranov; Anatoly V. Fedorov; Yurii Gun'ko
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Paper Abstract

Recently, the use of stereospecific chiral stabilising molecules has also opened another avenue of interest in the area of quantum dot (QD) research. The main goal of our research is to develop new types of technologically important quantum dot materials containing chiral defects, study their properties and explore their applications. The utilisation of chiral penicillamine stabilisers allowed the preparation of new water soluble white emitting CdS quantum nanostructures which demonstrated circular dichroism in the band-edge region of the spectrum. It was also demonstrated that all three types of QDs (D-, L-, and Rac penicillamine stabilised) show very broad emission bands between 400 and 700 nm due to defects or trap states on the surfaces of the nanocrystals. In this work the chiral CdS based quantum nanostructures have also been doped by copper metal ions and new chiral penicilamine stabilized CuS nanoparticles have been prepared and investigated. It was found that copper doping had a strong effect at low levels in the synthesis of chiral CdS nanostructures. We expect that this research will open new horizons in the chemistry of chiral nanomaterials and their application in biotechnology, sensing and asymmetric synthesis.

Paper Details

Date Published: 2 May 2014
PDF: 13 pages
Proc. SPIE 9126, Nanophotonics V, 912619 (2 May 2014); doi: 10.1117/12.2052371
Show Author Affiliations
Joseph Govan, Trinity College Dublin (Ireland)
Alexander Loudon, Trinity College Dublin (Ireland)
Alexander V. Baranov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Anatoly V. Fedorov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Yurii Gun'ko, Trinity College Dublin (Ireland)
National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)


Published in SPIE Proceedings Vol. 9126:
Nanophotonics V
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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