schliessen

Filtern

 

Bibliotheken

Bright Surface‐Enhanced Raman Scattering with Fluorescence Quenching from Silica Encapsulated J‐Aggregate Coated Gold Nanoparticles

Plexitonic nanoparticles offer variable optical properties through tunable excitations, in addition to electric field enhancements that far exceed molecular resonators. This study demonstrates a way to design an ultrabright surface‐enhanced Raman spectroscopy (SERS) signal while simultaneously quenc... Full description

Journal Title: Advanced Materials February 2018, Vol.30(5), pp.n/a-n/a
Main Author: Walters, Christopher M.
Other Authors: Pao, Caroline , Gagnon, Brandon P. , Zamecnik, Colin R. , Walker, Gilbert C.
Format: Electronic Article Electronic Article
Language:
Subjects:
ID: ISSN: 0935-9648 ; E-ISSN: 1521-4095 ; DOI: 10.1002/adma.201705381
Zum Text:
SendSend as email Add to Book BagAdd to Book Bag
Staff View
recordid: wj10.1002/adma.201705381
title: Bright Surface‐Enhanced Raman Scattering with Fluorescence Quenching from Silica Encapsulated J‐Aggregate Coated Gold Nanoparticles
format: Article
creator:
  • Walters, Christopher M.
  • Pao, Caroline
  • Gagnon, Brandon P.
  • Zamecnik, Colin R.
  • Walker, Gilbert C.
subjects:
  • Active Plasmonics
  • Biosensors
  • Fluorescence Quenching
  • Sers
  • Silica Encapsulation
ispartof: Advanced Materials, February 2018, Vol.30(5), pp.n/a-n/a
description: Plexitonic nanoparticles offer variable optical properties through tunable excitations, in addition to electric field enhancements that far exceed molecular resonators. This study demonstrates a way to design an ultrabright surface‐enhanced Raman spectroscopy (SERS) signal while simultaneously quenching the fluorescence background through silica encapsulation of the semiconductor–metal composite nanoparticles. Using a multistep approach, a J‐aggregate‐forming organic dye is assembled on the surface of gold nanoparticles using a cationic linker. Excitonic resonance of the J‐aggregate–metal system shows an enhanced SERS signal at an appropriate excitation wavelength. Further encapsulation of the decorated particles in silica shows a significant reduction in the fluorescence signal of the Raman spectra (5× reduction) and an increase in Raman scattering (7× enhancement) when compared to phospholipid encapsulation. This reduction in fluorescence is important for maximizing the useful SERS enhancement from the particle, which shows a signal increase on the order of 10 times greater than J‐aggregated dye in solution and 24 times greater than Oxonica S421 SERS tag. The silica layer also serves to promote colloidal stability. The combination of reduced fluorescence background, enhanced SERS intensity, and temporal stability makes these particles highly distinguishable with potential to enable high‐throughput applications such as SERS flow cytometry. is templated onto the surface of gold nanoparticles using a cationic linker. Silica encapsulation of these particles is shown to significantly quench the fluorescence signal from the dye (5× reduction at 1030 cm Stokes shift). Optimizing the excitation wavelength results in an ultrabright surface‐enhanced resonance Raman scattering from these particles (10× greater than J‐aggregated dye in solution).
language:
source:
identifier: ISSN: 0935-9648 ; E-ISSN: 1521-4095 ; DOI: 10.1002/adma.201705381
fulltext: fulltext
issn:
  • 0935-9648
  • 09359648
  • 1521-4095
  • 15214095
url: Link


@attributes
ID1503123864
RANK0.07
NO1
SEARCH_ENGINEprimo_central_multiple_fe
SEARCH_ENGINE_TYPEPrimo Central Search Engine
LOCALfalse
PrimoNMBib
record
control
sourcerecordid10.1002/adma.201705381
sourceidwj
recordidTN_wj10.1002/adma.201705381
sourcesystemOther
pqid1993003307
galeid525878331
display
typearticle
titleBright Surface‐Enhanced Raman Scattering with Fluorescence Quenching from Silica Encapsulated J‐Aggregate Coated Gold Nanoparticles
creatorWalters, Christopher M. ; Pao, Caroline ; Gagnon, Brandon P. ; Zamecnik, Colin R. ; Walker, Gilbert C.
ispartofAdvanced Materials, February 2018, Vol.30(5), pp.n/a-n/a
identifier
subjectActive Plasmonics ; Biosensors ; Fluorescence Quenching ; Sers ; Silica Encapsulation
descriptionPlexitonic nanoparticles offer variable optical properties through tunable excitations, in addition to electric field enhancements that far exceed molecular resonators. This study demonstrates a way to design an ultrabright surface‐enhanced Raman spectroscopy (SERS) signal while simultaneously quenching the fluorescence background through silica encapsulation of the semiconductor–metal composite nanoparticles. Using a multistep approach, a J‐aggregate‐forming organic dye is assembled on the surface of gold nanoparticles using a cationic linker. Excitonic resonance of the J‐aggregate–metal system shows an enhanced SERS signal at an appropriate excitation wavelength. Further encapsulation of the decorated particles in silica shows a significant reduction in the fluorescence signal of the Raman spectra (5× reduction) and an increase in Raman scattering (7× enhancement) when compared to phospholipid encapsulation. This reduction in fluorescence is important for maximizing the useful SERS enhancement from the particle, which shows a signal increase on the order of 10 times greater than J‐aggregated dye in solution and 24 times greater than Oxonica S421 SERS tag. The silica layer also serves to promote colloidal stability. The combination of reduced fluorescence background, enhanced SERS intensity, and temporal stability makes these particles highly distinguishable with potential to enable high‐throughput applications such as SERS flow cytometry. is templated onto the surface of gold nanoparticles using a cationic linker. Silica encapsulation of these particles is shown to significantly quench the fluorescence signal from the dye (5× reduction at 1030 cm Stokes shift). Optimizing the excitation wavelength results in an ultrabright surface‐enhanced resonance Raman scattering from these particles (10× greater than J‐aggregated dye in solution).
source
version6
lds50peer_reviewed
links
openurl$$Topenurl_article
openurlfulltext$$Topenurlfull_article
search
creatorcontrib
0Walters, Christopher M.
1Pao, Caroline
2Gagnon, Brandon P.
3Zamecnik, Colin R.
4Walker, Gilbert C.
titleBright Surface‐Enhanced Raman Scattering with Fluorescence Quenching from Silica Encapsulated J‐Aggregate Coated Gold Nanoparticles
descriptionPlexitonic nanoparticles offer variable optical properties through tunable excitations, in addition to electric field enhancements that far exceed molecular resonators. This study demonstrates a way to design an ultrabright surface‐enhanced Raman spectroscopy (SERS) signal while simultaneously quenching the fluorescence background through silica encapsulation of the semiconductor–metal composite nanoparticles. Using a multistep approach, a J‐aggregate‐forming organic dye is assembled on the surface of gold nanoparticles using a cationic linker. Excitonic resonance of the J‐aggregate–metal system shows an enhanced SERS signal at an appropriate excitation wavelength. Further encapsulation of the decorated particles in silica shows a significant reduction in the fluorescence signal of the Raman spectra (5× reduction) and an increase in Raman scattering (7× enhancement) when compared to phospholipid encapsulation. This reduction in fluorescence is important for maximizing the useful SERS enhancement from the particle, which shows a signal increase on the order of 10 times greater than J‐aggregated dye in solution and 24 times greater than Oxonica S421 SERS tag. The silica layer also serves to promote colloidal stability. The combination of reduced fluorescence background, enhanced SERS intensity, and temporal stability makes these particles highly distinguishable with potential to enable high‐throughput applications such as SERS flow cytometry. is templated onto the surface of gold nanoparticles using a cationic linker. Silica encapsulation of these particles is shown to significantly quench the fluorescence signal from the dye (5× reduction at 1030 cm Stokes shift). Optimizing the excitation wavelength results in an ultrabright surface‐enhanced resonance Raman scattering from these particles (10× greater than J‐aggregated dye in solution).
subject
0Active Plasmonics
1Biosensors
2Fluorescence Quenching
3Sers
4Silica Encapsulation
general
010.1002/adma.201705381
1Wiley Online Library
sourceidwj
recordidwj10.1002/adma.201705381
issn
00935-9648
109359648
21521-4095
315214095
rsrctypearticle
creationdate2018
addtitle
0Advanced Materials
1Adv. Mater.
searchscope
0wj
1wiley
scope
0wj
1wiley
lsr30VSR-Enriched:[pages, pqid, orcidid, galeid]
sort
titleBright Surface‐Enhanced Raman Scattering with Fluorescence Quenching from Silica Encapsulated J‐Aggregate Coated Gold Nanoparticles
authorWalters, Christopher M. ; Pao, Caroline ; Gagnon, Brandon P. ; Zamecnik, Colin R. ; Walker, Gilbert C.
creationdate20180200
facets
frbrgroupid514309097898666071
frbrtype5
newrecords20180207
creationdate2018
topic
0Active Plasmonics
1Biosensors
2Fluorescence Quenching
3Sers
4Silica Encapsulation
collectionWiley Online Library
prefilterarticles
rsrctypearticles
creatorcontrib
0Walters, Christopher M.
1Pao, Caroline
2Gagnon, Brandon P.
3Zamecnik, Colin R.
4Walker, Gilbert C.
jtitleAdvanced Materials
toplevelpeer_reviewed
delivery
delcategoryRemote Search Resource
fulltextfulltext
addata
aulast
0Walters
1Pao
2Gagnon
3Zamecnik
4Walker
aufirst
0Christopher M.
1Caroline
2Brandon P.
3Colin R.
4Gilbert C.
au
0Walters, Christopher M.
1Pao, Caroline
2Gagnon, Brandon P.
3Zamecnik, Colin R.
4Walker, Gilbert C.
atitleBright Surface‐Enhanced Raman Scattering with Fluorescence Quenching from Silica Encapsulated J‐Aggregate Coated Gold Nanoparticles
jtitleAdvanced Materials
risdate201802
volume30
issue5
spagen/a
epagen/a
issn0935-9648
eissn1521-4095
genrearticle
ristypeJOUR
abstractPlexitonic nanoparticles offer variable optical properties through tunable excitations, in addition to electric field enhancements that far exceed molecular resonators. This study demonstrates a way to design an ultrabright surface‐enhanced Raman spectroscopy (SERS) signal while simultaneously quenching the fluorescence background through silica encapsulation of the semiconductor–metal composite nanoparticles. Using a multistep approach, a J‐aggregate‐forming organic dye is assembled on the surface of gold nanoparticles using a cationic linker. Excitonic resonance of the J‐aggregate–metal system shows an enhanced SERS signal at an appropriate excitation wavelength. Further encapsulation of the decorated particles in silica shows a significant reduction in the fluorescence signal of the Raman spectra (5× reduction) and an increase in Raman scattering (7× enhancement) when compared to phospholipid encapsulation. This reduction in fluorescence is important for maximizing the useful SERS enhancement from the particle, which shows a signal increase on the order of 10 times greater than J‐aggregated dye in solution and 24 times greater than Oxonica S421 SERS tag. The silica layer also serves to promote colloidal stability. The combination of reduced fluorescence background, enhanced SERS intensity, and temporal stability makes these particles highly distinguishable with potential to enable high‐throughput applications such as SERS flow cytometry. is templated onto the surface of gold nanoparticles using a cationic linker. Silica encapsulation of these particles is shown to significantly quench the fluorescence signal from the dye (5× reduction at 1030 cm Stokes shift). Optimizing the excitation wavelength results in an ultrabright surface‐enhanced resonance Raman scattering from these particles (10× greater than J‐aggregated dye in solution).
doi10.1002/adma.201705381
pages1-6
orcidid0000-0002-5248-5498
date2018-02