Chiral quantum dot based materials

Joseph Govan; Alexander Loudon; Alexander V. Baranov; Anatoly V. Fedorov; Yurii Gun'ko

doi:10.1117/12.2052371

2 May 2014 Chiral quantum dot based materials

Joseph Govan, Alexander Loudon, Alexander V. Baranov, Anatoly V. Fedorov, Yurii Gun'ko

Proceedings Volume 9126, Nanophotonics V; 912619 (2014) https://doi.org/10.1117/12.2052371
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

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.

Citation Download Citation

Joseph Govan, Alexander Loudon, Alexander V. Baranov, Anatoly V. Fedorov, and Yurii Gun'ko "Chiral quantum dot based materials", Proc. SPIE 9126, Nanophotonics V, 912619 (2 May 2014); https://doi.org/10.1117/12.2052371

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