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Optically active II-VI semiconductor nanocrystals via chiral phase transfer

Published online by Cambridge University Press:  30 June 2015

Maria V. Mukhina
Affiliation:
ITMO University, Saint Petersburg, Russian Federation.
Vladimir G. Maslov
Affiliation:
ITMO University, Saint Petersburg, Russian Federation.
Ivan V. Korsakov
Affiliation:
ITMO University, Saint Petersburg, Russian Federation.
Finn Purcell Milton
Affiliation:
Trinity College, University of Dublin, Dublin 2, Ireland.
Alexander Loudon
Affiliation:
Trinity College, University of Dublin, Dublin 2, Ireland.
Alexander V. Baranov
Affiliation:
ITMO University, Saint Petersburg, Russian Federation.
Anatoly V. Fedorov
Affiliation:
ITMO University, Saint Petersburg, Russian Federation.
Yurii K. Gun’ko
Affiliation:
ITMO University, Saint Petersburg, Russian Federation. Trinity College, University of Dublin, Dublin 2, Ireland.
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Abstract

We report optically active ensembles of II-VI semiconductor nanocrystals prepared via chiral phase transfer, which is initiated by exchange of the original achiral ligands capping the nanocrystals surfaces for chiral L- and D-cysteine. We used this method to obtain ensembles of CdSe, CdS, ZnS:Mn, and CdSe/ZnS quantum dots and CdSe/CdS quantum rods exhibited Circular Dichroism (CD) and Circularly Polarized Luminescence (CPL) signals. The optically active nanocrystals revealed the CD and CPL bands strongly correlated with absorption and luminescence bands with unique band “pattern” for each material and the nanocrystal shape.

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Copyright
Copyright © Materials Research Society 2015 

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References

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