Surfactant mediated optical properties of cytosine capped CdSe quantum dots
Document Type
Article
Publication Date
5-31-2010
Abstract
This letter demonstrates the use of one of the nucleobases, 'cytosine' as a new capping agent in controlling the size of the nanoparticles. A size dependent blue shift in optical absorption with enhanced luminescence is observed. Since the calculated density of states do not show any change in the band gap of as-prepared quantum dots after capping, the observed blue shift of the absorption peak can solely be attributed to the so-called size-effect whereas the enhancement in luminescence to surfactant mediated defect passivation. It is expected that the observed properties of the cytosine capped CdSe quantum dots would facilitate a better bio-compatibility of tailor-made nanoparticles for bio-imaging applications. © 2010 Elsevier B.V. All rights reserved.
Publication Title
Materials Letters
Recommended Citation
Sharma, P.,
Dutta, R.,
Liu, C.,
Pandey, R.,
&
Pandey, A.
(2010).
Surfactant mediated optical properties of cytosine capped CdSe quantum dots.
Materials Letters,
64(10), 1183-1186.
http://doi.org/10.1016/j.matlet.2010.02.045
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/6865
