1064 nm SERS of NIR active hollow gold nanotags

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Surface enhanced Raman scattering (SERS) tags are in situ probes that can provide sensitive and selective probes for optical analysis in biological materials. Engineering tags for use in the near infrared (NIR) region is of particular interest since there is an uncongested spectral window for optical analysis due to the low background absorption and scattering from many molecules. An improved synthesis has resulted in the formation of hollow gold nanoshells (HGNs) with a localised surface plasmon resonance (LSPR) between 800 and 900 nm which provide effective SERS when excited at 1064 nm. Seven Raman reporters containing aromatic amine or thiol attachment groups were investigated. All were effective but 1,2-bis(4-pyridyl)ethylene (BPE) and 4,4-azopyridine (AZPY) provided the largest enhancement. At approximately monolayer coverage, these two reporters appear to pack with the main axis of the molecule perpendicular or nearly perpendicular to the surface giving strong SERS and thus providing effective 1064 nm gold SERS nanotags.

LanguageEnglish
Pages1980-1986
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number3
Early online date27 Nov 2014
DOIs
Publication statusPublished - 21 Jan 2015

Fingerprint

Gold
Raman scattering
hollow
Raman spectra
gold
Infrared radiation
Nanoshells
Molecules
probes
Surface plasmon resonance
surface plasmon resonance
Sulfhydryl Compounds
thiols
Biological materials
Amines
attachment
molecules
Monolayers
amines
ethylene

Keywords

  • gold nanotags
  • SERS nanoparticle tags
  • optical analysis

Cite this

@article{045da1581e9745db803e005bb9c2cfa7,
title = "1064 nm SERS of NIR active hollow gold nanotags",
abstract = "Surface enhanced Raman scattering (SERS) tags are in situ probes that can provide sensitive and selective probes for optical analysis in biological materials. Engineering tags for use in the near infrared (NIR) region is of particular interest since there is an uncongested spectral window for optical analysis due to the low background absorption and scattering from many molecules. An improved synthesis has resulted in the formation of hollow gold nanoshells (HGNs) with a localised surface plasmon resonance (LSPR) between 800 and 900 nm which provide effective SERS when excited at 1064 nm. Seven Raman reporters containing aromatic amine or thiol attachment groups were investigated. All were effective but 1,2-bis(4-pyridyl)ethylene (BPE) and 4,4-azopyridine (AZPY) provided the largest enhancement. At approximately monolayer coverage, these two reporters appear to pack with the main axis of the molecule perpendicular or nearly perpendicular to the surface giving strong SERS and thus providing effective 1064 nm gold SERS nanotags.",
keywords = "gold nanotags, SERS nanoparticle tags, optical analysis",
author = "H. Kearns and Shand, {N. C.} and Smith, {W. E.} and K. Faulds and D. Graham",
year = "2015",
month = "1",
day = "21",
doi = "10.1039/c4cp04281f",
language = "English",
volume = "17",
pages = "1980--1986",
journal = "Physical Chemistry Chemical Physics",
issn = "1463-9076",
number = "3",

}

1064 nm SERS of NIR active hollow gold nanotags. / Kearns, H.; Shand, N. C.; Smith, W. E.; Faulds, K.; Graham, D.

In: Physical Chemistry Chemical Physics, Vol. 17, No. 3, 21.01.2015, p. 1980-1986.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 1064 nm SERS of NIR active hollow gold nanotags

AU - Kearns, H.

AU - Shand, N. C.

AU - Smith, W. E.

AU - Faulds, K.

AU - Graham, D.

PY - 2015/1/21

Y1 - 2015/1/21

N2 - Surface enhanced Raman scattering (SERS) tags are in situ probes that can provide sensitive and selective probes for optical analysis in biological materials. Engineering tags for use in the near infrared (NIR) region is of particular interest since there is an uncongested spectral window for optical analysis due to the low background absorption and scattering from many molecules. An improved synthesis has resulted in the formation of hollow gold nanoshells (HGNs) with a localised surface plasmon resonance (LSPR) between 800 and 900 nm which provide effective SERS when excited at 1064 nm. Seven Raman reporters containing aromatic amine or thiol attachment groups were investigated. All were effective but 1,2-bis(4-pyridyl)ethylene (BPE) and 4,4-azopyridine (AZPY) provided the largest enhancement. At approximately monolayer coverage, these two reporters appear to pack with the main axis of the molecule perpendicular or nearly perpendicular to the surface giving strong SERS and thus providing effective 1064 nm gold SERS nanotags.

AB - Surface enhanced Raman scattering (SERS) tags are in situ probes that can provide sensitive and selective probes for optical analysis in biological materials. Engineering tags for use in the near infrared (NIR) region is of particular interest since there is an uncongested spectral window for optical analysis due to the low background absorption and scattering from many molecules. An improved synthesis has resulted in the formation of hollow gold nanoshells (HGNs) with a localised surface plasmon resonance (LSPR) between 800 and 900 nm which provide effective SERS when excited at 1064 nm. Seven Raman reporters containing aromatic amine or thiol attachment groups were investigated. All were effective but 1,2-bis(4-pyridyl)ethylene (BPE) and 4,4-azopyridine (AZPY) provided the largest enhancement. At approximately monolayer coverage, these two reporters appear to pack with the main axis of the molecule perpendicular or nearly perpendicular to the surface giving strong SERS and thus providing effective 1064 nm gold SERS nanotags.

KW - gold nanotags

KW - SERS nanoparticle tags

KW - optical analysis

UR - http://www.scopus.com/inward/record.url?scp=84918779323&partnerID=8YFLogxK

U2 - 10.1039/c4cp04281f

DO - 10.1039/c4cp04281f

M3 - Article

VL - 17

SP - 1980

EP - 1986

JO - Physical Chemistry Chemical Physics

T2 - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

SN - 1463-9076

IS - 3

ER -