Chain-length-dependent vibrational resonances in alkanethiol self-assembled monolayers observed on plasmonic nanoparticle substrates

Carly S Levin; Benjamin G Janesko; Rizia Bardhan; Gustavo E Scuseria; Jeffrey D Hartgerink; Naomi J. Halas

doi:10.1021/nl062283k

Chain-length-dependent vibrational resonances in alkanethiol self-assembled monolayers observed on plasmonic nanoparticle substrates

Carly S Levin, Benjamin G Janesko, Rizia Bardhan, Gustavo E Scuseria, Jeffrey D Hartgerink, Naomi J. Halas

Houston Methodist

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

62 Scopus citations

Abstract

Alkanethiol self-assembled monolayers (SAMs) on gold exhibit a series of sharp resonances in their surface-enhanced Raman spectrum that depend dramatically on carbon chain length. This unusual behavior suggests a coupling of the gold-sulfur bond stretch with the longitudinal acoustic, "accordion", vibrations of the molecular alkane chain. A simple model of a one-dimensional chain attached to a surface quantitatively reproduces these previously unreported experimental observations in this important nanomaterial system.

Original language	English (US)
Pages (from-to)	2617-21
Number of pages	5
Journal	Nano Letters
Volume	6
Issue number	11
DOIs	https://doi.org/10.1021/nl062283k
State	Published - Nov 2006

Keywords

Alkanes
Carbon
Gold
Materials Testing
Nanoparticles
Sensitivity and Specificity
Spectrum Analysis, Raman
Sulfhydryl Compounds
Surface Properties
Vibration
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

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10.1021/nl062283k

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title = "Chain-length-dependent vibrational resonances in alkanethiol self-assembled monolayers observed on plasmonic nanoparticle substrates",

abstract = "Alkanethiol self-assembled monolayers (SAMs) on gold exhibit a series of sharp resonances in their surface-enhanced Raman spectrum that depend dramatically on carbon chain length. This unusual behavior suggests a coupling of the gold-sulfur bond stretch with the longitudinal acoustic, {"}accordion{"}, vibrations of the molecular alkane chain. A simple model of a one-dimensional chain attached to a surface quantitatively reproduces these previously unreported experimental observations in this important nanomaterial system.",

keywords = "Alkanes, Carbon, Gold, Materials Testing, Nanoparticles, Sensitivity and Specificity, Spectrum Analysis, Raman, Sulfhydryl Compounds, Surface Properties, Vibration, Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, Non-P.H.S.",

author = "Levin, \{Carly S\} and Janesko, \{Benjamin G\} and Rizia Bardhan and Scuseria, \{Gustavo E\} and Hartgerink, \{Jeffrey D\} and Halas, \{Naomi J.\}",

year = "2006",

month = nov,

doi = "10.1021/nl062283k",

language = "English (US)",

volume = "6",

pages = "2617--21",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "11",

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TY - JOUR

T1 - Chain-length-dependent vibrational resonances in alkanethiol self-assembled monolayers observed on plasmonic nanoparticle substrates

AU - Levin, Carly S

AU - Janesko, Benjamin G

AU - Bardhan, Rizia

AU - Scuseria, Gustavo E

AU - Hartgerink, Jeffrey D

AU - Halas, Naomi J.

PY - 2006/11

Y1 - 2006/11

N2 - Alkanethiol self-assembled monolayers (SAMs) on gold exhibit a series of sharp resonances in their surface-enhanced Raman spectrum that depend dramatically on carbon chain length. This unusual behavior suggests a coupling of the gold-sulfur bond stretch with the longitudinal acoustic, "accordion", vibrations of the molecular alkane chain. A simple model of a one-dimensional chain attached to a surface quantitatively reproduces these previously unreported experimental observations in this important nanomaterial system.

AB - Alkanethiol self-assembled monolayers (SAMs) on gold exhibit a series of sharp resonances in their surface-enhanced Raman spectrum that depend dramatically on carbon chain length. This unusual behavior suggests a coupling of the gold-sulfur bond stretch with the longitudinal acoustic, "accordion", vibrations of the molecular alkane chain. A simple model of a one-dimensional chain attached to a surface quantitatively reproduces these previously unreported experimental observations in this important nanomaterial system.

KW - Alkanes

KW - Carbon

KW - Gold

KW - Materials Testing

KW - Nanoparticles

KW - Sensitivity and Specificity

KW - Spectrum Analysis, Raman

KW - Sulfhydryl Compounds

KW - Surface Properties

KW - Vibration

KW - Journal Article

KW - Research Support, N.I.H., Extramural

KW - Research Support, Non-U.S. Gov't

KW - Research Support, U.S. Gov't, Non-P.H.S.

UR - https://www.scopus.com/pages/publications/33846180393

UR - https://www.scopus.com/inward/citedby.url?scp=33846180393&partnerID=8YFLogxK

U2 - 10.1021/nl062283k

DO - 10.1021/nl062283k

M3 - Article

C2 - 17090101

SN - 1530-6984

VL - 6

SP - 2617

EP - 2621

JO - Nano Letters

JF - Nano Letters

IS - 11

ER -

Chain-length-dependent vibrational resonances in alkanethiol self-assembled monolayers observed on plasmonic nanoparticle substrates

Abstract

Keywords

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