Tip-enhanced Raman spectroscopic imaging of patterned thiol monolayers

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Author(s) Stadler, Johannes, Schmid, Thomas, Opilik, Lothar, Kuhn, Phillip, Dittrich, Petra S., Zenobi, Renato
Publication Type Journal Items, Publication Status: Published
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Title Tip-enhanced Raman spectroscopic imaging of patterned thiol monolayers
Author(s) Stadler, Johannes
Schmid, Thomas
Opilik, Lothar
Kuhn, Phillip
Dittrich, Petra S.
Zenobi, Renato
Journal or Series Title Beilstein Journal of Nanotechnology
Volume Number 2011
Issue Number 2
Start Page 509
End Page 515
ISSN 2190-4286
Publisher Beilstein-Institut zur Förderung der Chemischen Wissenschaften
Publication Place Frankfurt am Main
Publication Date 2011-08
Abstract Full spectroscopic imaging by means of tip-enhanced Raman spectroscopy (TERS) was used to measure the distribution of two isomeric thiols (2-mercaptopyridine (2-PySH) and 4-mercaptopyridine (4-PySH)) in a self-assembled monolayer (SAM) on a gold surface. From a patterned sample created by microcontact printing, an image with full spectral information in every pixel was acquired. The spectroscopic data is in good agreement with the expected molecular distribution on the sample surface due to the microcontact printing process. Using specific marker bands at 1000 cm−1 for 2-PySH and 1100 cm−1 for 4-PySH, both isomers could be localized on the surface and semi-quantitative information was deduced from the band intensities. Even though nanometer size resolution information was not required, the large signal enhancement of TERS was employed here to detect a monolayer coverage of weakly scattering analytes that were not detectable with normal Raman spectroscopy, emphasizing the usefulness of TERS.
DOI 10.3762/bjnano.2.55
Additional Notes Received 16 March 2011, Accepted 31 May 2011, Published 30 August 2011
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03807
03430
Organisational Unit(s)
Source Database ID FORM-1320665259
WOS-000300021800003
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@article{Stdlr2011,
  author = "Stadler, Johannes and Schmid, Thomas and Opilik, Lothar and Kuhn, Phillip and Dittrich, Petra S. and Zenobi, Renato",
  title = "{T}ip-enhanced {R}aman spectroscopic imaging of patterned thiol monolayers",
  journal = "Beilstein Journal of Nanotechnology",
  year = 2011,
  volume = "2011",
  number = "2",
  pages = "509--515",
  month = aug,
}


E-Citations record created: Mon, 07 Nov 2011, 11:28:00 CET