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SERS Characterization of the Indocyanine-Type Dye IR-820 on Gold and Silver Nanoparticles in the Near Infrared
Joint Authors
Neves, Tatiana B. V.
Andrade, Gustavo F. S.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-01-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The Raman spectrum of the indocyanine-type dye IR-820 has been assigned for both solid and solution.
SERS spectra of IR-820 on both silver and gold nanoparticles suspensions excited at 1064 nm were obtained.
AgNPs allowed the detection of the dye through SERS down to 0.1 micromoles per liter; for the AuNPs the lowest concentration of the dye detectable was 10 micromoles per liter.
Changes in the SERS relative intensities compared to the Raman spectrum in solution are subtle, mostly due to the preresonance effect of the dye.
However, a perpendicular orientation relative to the metallic surface was inferred for the dye on both AgNPs and AuNPs.
The easily distinguishable SERS spectra of the dye excited at 1064 nm, together with the high biological compatibility of cyanine dyes, are both indicative that IR-820 could be used as a high-performance probe molecule for SERS.
American Psychological Association (APA)
Neves, Tatiana B. V.& Andrade, Gustavo F. S.. 2015. SERS Characterization of the Indocyanine-Type Dye IR-820 on Gold and Silver Nanoparticles in the Near Infrared. Journal of Spectroscopy،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1070344
Modern Language Association (MLA)
Neves, Tatiana B. V.& Andrade, Gustavo F. S.. SERS Characterization of the Indocyanine-Type Dye IR-820 on Gold and Silver Nanoparticles in the Near Infrared. Journal of Spectroscopy No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1070344
American Medical Association (AMA)
Neves, Tatiana B. V.& Andrade, Gustavo F. S.. SERS Characterization of the Indocyanine-Type Dye IR-820 on Gold and Silver Nanoparticles in the Near Infrared. Journal of Spectroscopy. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1070344
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1070344