Nonlinear excitation of tryptophan emission enhanced by silver nanoparticles

Diego Rativa; Anderson S L Gomes; Sebastian Wachsmann-Hogiu; Daniel L. Farkas; Renato E. De Araujo

doi:10.1007/s10895-008-0366-6

Nonlinear excitation of tryptophan emission enhanced by silver nanoparticles

Diego Rativa, Anderson S L Gomes, Sebastian Wachsmann-Hogiu, Daniel L. Farkas, Renato E. De Araujo

Pathology and Laboratory Medicine

Research output: Contribution to journal › Article

9 Scopus citations

Abstract

We measured and analyzed the behavior of the fluorescence of tryptophan water solutions with and without silver nanoparticles, excited by one, two and three photon processes. Two different colloids with silver nanoparticles with distinct diameters (0.65 nm and 9 nm) were used in the experiments. Fluorescence quenching was observed with one and two photon excitation. However, upon three-photon excitation, significant fluorescence enhancement was observed in the colloid. In this case excitation of the amino acid is assisted by the nonlinear absorption of infrared light by the silver nanoparticles. In this paper we are proposing a new way to explore metallic nanoparticles to enhance autofluorescence of biomolecules.

Original language	English (US)
Pages (from-to)	1151-1155
Number of pages	5
Journal	Journal of Fluorescence
Volume	18
Issue number	6
DOIs	https://doi.org/10.1007/s10895-008-0366-6
State	Published - Nov 2008

Keywords

Autofluorescence
Metallic nanoparticles
Nonlinear excitation
Tryptophan

ASJC Scopus subject areas

Spectroscopy
Biochemistry
Clinical Biochemistry

Access to Document

10.1007/s10895-008-0366-6

Fingerprint Dive into the research topics of 'Nonlinear excitation of tryptophan emission enhanced by silver nanoparticles'. Together they form a unique fingerprint.

Cite this

Rativa, D., Gomes, A. S. L., Wachsmann-Hogiu, S., Farkas, D. L., & De Araujo, R. E. (2008). Nonlinear excitation of tryptophan emission enhanced by silver nanoparticles. Journal of Fluorescence, 18(6), 1151-1155. https://doi.org/10.1007/s10895-008-0366-6

@article{ee54855de603460690cfd21cb186c831,

title = "Nonlinear excitation of tryptophan emission enhanced by silver nanoparticles",

abstract = "We measured and analyzed the behavior of the fluorescence of tryptophan water solutions with and without silver nanoparticles, excited by one, two and three photon processes. Two different colloids with silver nanoparticles with distinct diameters (0.65 nm and 9 nm) were used in the experiments. Fluorescence quenching was observed with one and two photon excitation. However, upon three-photon excitation, significant fluorescence enhancement was observed in the colloid. In this case excitation of the amino acid is assisted by the nonlinear absorption of infrared light by the silver nanoparticles. In this paper we are proposing a new way to explore metallic nanoparticles to enhance autofluorescence of biomolecules.",

keywords = "Autofluorescence, Metallic nanoparticles, Nonlinear excitation, Tryptophan",

author = "Diego Rativa and Gomes, {Anderson S L} and Sebastian Wachsmann-Hogiu and Farkas, {Daniel L.} and {De Araujo}, {Renato E.}",

year = "2008",

month = nov,

doi = "10.1007/s10895-008-0366-6",

language = "English (US)",

volume = "18",

pages = "1151--1155",

journal = "Journal of Fluorescence",

issn = "1053-0509",

publisher = "Springer New York",

number = "6",

}

TY - JOUR

T1 - Nonlinear excitation of tryptophan emission enhanced by silver nanoparticles

AU - Rativa, Diego

AU - Gomes, Anderson S L

AU - Wachsmann-Hogiu, Sebastian

AU - Farkas, Daniel L.

AU - De Araujo, Renato E.

PY - 2008/11

Y1 - 2008/11

N2 - We measured and analyzed the behavior of the fluorescence of tryptophan water solutions with and without silver nanoparticles, excited by one, two and three photon processes. Two different colloids with silver nanoparticles with distinct diameters (0.65 nm and 9 nm) were used in the experiments. Fluorescence quenching was observed with one and two photon excitation. However, upon three-photon excitation, significant fluorescence enhancement was observed in the colloid. In this case excitation of the amino acid is assisted by the nonlinear absorption of infrared light by the silver nanoparticles. In this paper we are proposing a new way to explore metallic nanoparticles to enhance autofluorescence of biomolecules.

AB - We measured and analyzed the behavior of the fluorescence of tryptophan water solutions with and without silver nanoparticles, excited by one, two and three photon processes. Two different colloids with silver nanoparticles with distinct diameters (0.65 nm and 9 nm) were used in the experiments. Fluorescence quenching was observed with one and two photon excitation. However, upon three-photon excitation, significant fluorescence enhancement was observed in the colloid. In this case excitation of the amino acid is assisted by the nonlinear absorption of infrared light by the silver nanoparticles. In this paper we are proposing a new way to explore metallic nanoparticles to enhance autofluorescence of biomolecules.

KW - Autofluorescence

KW - Metallic nanoparticles

KW - Nonlinear excitation

KW - Tryptophan

UR - http://www.scopus.com/inward/record.url?scp=56749163821&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=56749163821&partnerID=8YFLogxK

U2 - 10.1007/s10895-008-0366-6

DO - 10.1007/s10895-008-0366-6

M3 - Article

C2 - 18379860

AN - SCOPUS:56749163821

VL - 18

SP - 1151

EP - 1155

JO - Journal of Fluorescence

JF - Journal of Fluorescence

SN - 1053-0509

IS - 6

ER -