Issue 4, 2012
From the journal:

Nanoscale

Bioconjugated silicon quantum dots from one-step green synthesis†

Romuald Intartaglia,*a   Annette Barchanski,b   Komal Bagga,a   Alessandro Genovese,c   Gobind Das,e   Philipp Wagener,d   Enzo Di Fabrizio,e   Alberto Diaspro,a   Fernando Brandia  and  Stephan Barcikowskid  

* Corresponding authors

a Department of Nanophysics, Istituto Italiano di Tecnologia, via Morego, 30, Genova, Italy
E-mail: romuald.intartaglia@iit.it

b Laser Zentrum Hannover e.V., Nanotechnology Department, Hollerithallee 8, Hannover, Germany

c Department of Nanochemistry, Istituto Italiano di Tecnologia, via Morego, 30, Genova, Italy

d Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse 7, Essen, Germany

e Department of Nanostructure, Istituto Italiano di Tecnologia, via Morego, 30, Genova, Italy

Abstract

Biofunctionalized silicon quantum dots were prepared through a one step strategy avoiding the use of chemical precursors. UV-Vis spectroscopy, Raman spectroscopy and HAADF-STEM prove oligonucleotide conjugation to the surface of silicon nanoparticle with an average size of 4 nm. The nanoparticle size results from the size-quenching effect during in situconjugation. Photoemissive properties, conjugation efficiency and stability of these pure colloids were studied and demonstrate the bio-application potential, e.g. for nucleic acid vector delivery with semiconducting, biocompatible nanoparticles.

Graphical abstract: Bioconjugated silicon quantum dots from one-step green synthesis

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Article information

DOI
https://doi.org/10.1039/C2NR11763K
Article type
Communication
Submitted
16 Nov 2011
Accepted
27 Dec 2011
First published
04 Jan 2012

Nanoscale, 2012,4, 1271-1274

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Bioconjugated silicon quantum dots from one-step green synthesis

R. Intartaglia, A. Barchanski, K. Bagga, A. Genovese, G. Das, P. Wagener, E. Di Fabrizio, A. Diaspro, F. Brandi and S. Barcikowski, Nanoscale, 2012, 4, 1271 DOI: 10.1039/C2NR11763K

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