Document Detail

Voltage regulation of fluorescence emission of single dyes bound to gold nanoparticles.
MedLine Citation:
PMID:  17346091     Owner:  NLM     Status:  MEDLINE    
An organic dye, SAMSA, bound to gold nanoparticles, displays random photoactivated fluorescence blinking whose rate depends on the size of the nanoparticles. We report experiments indicating that (1) the dye emission wavelength is red-shifted (10-30 nm) by applying an external low voltage (1-10 V) and that (2) the fluorescence emission of single dyes can be resonantly driven by tuning the alternating external bias frequency from 1 to 3 Hz, depending on the nanoparticle size. These properties appear highly valuable and promising for devising light emitting nanostructures.
F Cannone; M Collini; L D'Alfonso; G Baldini; G Chirico; G Tallarida; P Pallavicini
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-03-09
Journal Detail:
Title:  Nano letters     Volume:  7     ISSN:  1530-6984     ISO Abbreviation:  Nano Lett.     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-04-11     Completed Date:  2007-05-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1070-5     Citation Subset:  IM    
Laboratory for Advanced BioSpectroscopy (LABS), INFM-CNR, Dipartimento di Fisica, Università degli Studi di Milano-Bicocca, Milano, I-20126, Italy.
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MeSH Terms
Binding Sites
Crystallization / methods
Electromagnetic Fields
Fluorescent Dyes / chemistry*,  radiation effects*
Gold / chemistry*
Macromolecular Substances / chemistry
Materials Testing
Molecular Conformation
Nanostructures / chemistry*,  radiation effects*,  ultrastructure
Nanotechnology / methods*
Particle Size
Spectrometry, Fluorescence / methods*
Surface Properties
Reg. No./Substance:
0/Fluorescent Dyes; 0/Macromolecular Substances; 7440-57-5/Gold

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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