Surface-enhanced Raman scattering and plasmon excitations from isolated and elongated gold nanoaggregates

Mohammad Kamal Hossain; Genin Gary Huang; Tadaaki Kaneko; Yukihiro Ozaki

doi:10.1016/j.cplett.2009.06.043

Surface-enhanced Raman scattering and plasmon excitations from isolated and elongated gold nanoaggregates

Mohammad Kamal Hossain
, Genin Gary Huang
, Tadaaki Kaneko
, Yukihiro Ozaki^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Surface plasmon resonance (SPR) and subsequent surface-enhanced Raman scattering (SERS) of gold nanoaggregates were investigated with reference to hot-sites availability. Correlated SPR and SERS observation of the same sample shows that the plasmon excitations excited at the interstitials of nanoaggregates are more important rather than resonance conditions. The isolated aggregates mostly show a broadened SPR peak centered at ∼560 nm overlapping absorption band of analytes, whereas the elongated aggregates yield several SPR peaks in the longer wavelength region and provide higher enhancement in SERS. Finite-different time-domain analysis predicts that the localization sites get increased at least double in elongated aggregates.

Original language	English
Pages (from-to)	130-134
Number of pages	5
Journal	Chemical Physics Letters
Volume	477
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2009.06.043
State	Published - 28 Jul 2009
Externally published	Yes

Bibliographical note

Funding Information:
The authors thank Dr. Tamitake Itoh and Dr. Vasudevan Pillai Biju (AIST, Shikoku). KAKENHI (Grant-in-Aid for Scientific Research) on Priority Area ‘Strong Photon-Molecule Coupling Fields (No. 470, 20043032)’ from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) is acknowledged.

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.cplett.2009.06.043

Cite this

@article{75af117ebb874f38a2bf64384a939e14,

title = "Surface-enhanced Raman scattering and plasmon excitations from isolated and elongated gold nanoaggregates",

abstract = "Surface plasmon resonance (SPR) and subsequent surface-enhanced Raman scattering (SERS) of gold nanoaggregates were investigated with reference to hot-sites availability. Correlated SPR and SERS observation of the same sample shows that the plasmon excitations excited at the interstitials of nanoaggregates are more important rather than resonance conditions. The isolated aggregates mostly show a broadened SPR peak centered at ∼560 nm overlapping absorption band of analytes, whereas the elongated aggregates yield several SPR peaks in the longer wavelength region and provide higher enhancement in SERS. Finite-different time-domain analysis predicts that the localization sites get increased at least double in elongated aggregates.",

author = "Hossain, \{Mohammad Kamal\} and Huang, \{Genin Gary\} and Tadaaki Kaneko and Yukihiro Ozaki",

note = "Funding Information: The authors thank Dr. Tamitake Itoh and Dr. Vasudevan Pillai Biju (AIST, Shikoku). KAKENHI (Grant-in-Aid for Scientific Research) on Priority Area {\textquoteleft}Strong Photon-Molecule Coupling Fields (No. 470, 20043032){\textquoteright} from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) is acknowledged.",

year = "2009",

month = jul,

day = "28",

doi = "10.1016/j.cplett.2009.06.043",

language = "English",

volume = "477",

pages = "130--134",

journal = "Chemical Physics Letters",

issn = "0009-2614",

number = "1-3",

}

TY - JOUR

T1 - Surface-enhanced Raman scattering and plasmon excitations from isolated and elongated gold nanoaggregates

AU - Hossain, Mohammad Kamal

AU - Huang, Genin Gary

AU - Kaneko, Tadaaki

AU - Ozaki, Yukihiro

N1 - Funding Information: The authors thank Dr. Tamitake Itoh and Dr. Vasudevan Pillai Biju (AIST, Shikoku). KAKENHI (Grant-in-Aid for Scientific Research) on Priority Area ‘Strong Photon-Molecule Coupling Fields (No. 470, 20043032)’ from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) is acknowledged.

PY - 2009/7/28

Y1 - 2009/7/28

N2 - Surface plasmon resonance (SPR) and subsequent surface-enhanced Raman scattering (SERS) of gold nanoaggregates were investigated with reference to hot-sites availability. Correlated SPR and SERS observation of the same sample shows that the plasmon excitations excited at the interstitials of nanoaggregates are more important rather than resonance conditions. The isolated aggregates mostly show a broadened SPR peak centered at ∼560 nm overlapping absorption band of analytes, whereas the elongated aggregates yield several SPR peaks in the longer wavelength region and provide higher enhancement in SERS. Finite-different time-domain analysis predicts that the localization sites get increased at least double in elongated aggregates.

AB - Surface plasmon resonance (SPR) and subsequent surface-enhanced Raman scattering (SERS) of gold nanoaggregates were investigated with reference to hot-sites availability. Correlated SPR and SERS observation of the same sample shows that the plasmon excitations excited at the interstitials of nanoaggregates are more important rather than resonance conditions. The isolated aggregates mostly show a broadened SPR peak centered at ∼560 nm overlapping absorption band of analytes, whereas the elongated aggregates yield several SPR peaks in the longer wavelength region and provide higher enhancement in SERS. Finite-different time-domain analysis predicts that the localization sites get increased at least double in elongated aggregates.

UR - https://www.scopus.com/pages/publications/67650709418

U2 - 10.1016/j.cplett.2009.06.043

DO - 10.1016/j.cplett.2009.06.043

M3 - Article

AN - SCOPUS:67650709418

SN - 0009-2614

VL - 477

SP - 130

EP - 134

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Surface-enhanced Raman scattering and plasmon excitations from isolated and elongated gold nanoaggregates

Abstract

Bibliographical note

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this