Bioconjugated silicon quantum dots from one-step green synthesis
Authors: Intartaglia R., Barchanski A., Bagga K., Genovese A., Das G., Wagener P., Di Fabrizio E., Diaspro A., Brandi F., Barcikowski S.
Autors Affiliation: Department of Nanophysics, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy; Laser Zentrum Hannover E.V., Nanotechnology Department, Hollerithallee 8, 30419, Hannover, Germany; Department of Nanochemistry, Istituto Italiano di Tecnologia, via Morego, 30, 16163, Genova, Italy; Technical Chemistry i, Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse 7, 45141, Essen, Germany; Department of Nanostructure, Istituto Italiano di Tecnologia, via Morego, 30, 16163, 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 situ conjugation. 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.
Volume: 4 (4) Pages from: 1271 to: 1274
More Information: The authors acknowledge Simone Nitti, lab technician, for ICP-OES measurement. SB, PW and AB thank German Research Foundation for funding within DFG excellence cluster REBIRTH.KeyWords: IN-SITU BIOCONJUGATION; PULSED-LASER-ABLATION; GOLD NANOPARTICLES; FLUORESCENT NANOCRYSTALS; PHOTOSENSITIZERS
DOI: 10.1039/c2nr11763kCitations: 48data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-09-15References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here