NDLI: Surface-enhanced Raman effect in ultra-thin CuPc films employing periodic silver nanostructures

Content Provider	Springer Nature Link
Author	Ludemann, Michael Brumboiu, Iulia E. Gordan, Ovidiu D. Zahn, Dietrich R. T.
Copyright Year	2011
Abstract	In order to investigate the interaction of organic molecules with metals by means of Raman spectroscopy, special substrates were designed which combine interference and surface-enhancement mechanisms. Triangular shaped silver nanostructures with an angle bisector and a height of about 80 nm were prepared by nanosphere lithography on silicon substrates with a 100-nm oxide layer. Utilizing these substrates the dependence of the Raman signal intensity on the thickness of copper phthalocyanine (CuPc) was studied in the range from few percentages of a monolayer coverage up to 80 nm using an in situ setup. At an excitation in resonance with the plasmons of the nanostructures (2.6 eV) an increase of the signal was observed during film growth. Contrary to that, excitation at 1.92 eV in resonance with the CuPc absorption band leads to a strongly enhanced Raman signal for submonolayer coverage which hardly changes with the CuPc film thickness in the ultra-low coverage regime.
Starting Page	5855
Ending Page	5861
Page Count	7
File Format	PDF
ISSN	13880764
Journal	Journal of Nanoparticle Research
Volume Number	13
Issue Number	11
e-ISSN	1572896X
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-09-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Surface-enhanced Raman spectroscopy SERS Resonance Raman spectroscopy RRS Interference enhanced Raman Spectroscopy IERS In situ Raman spectroscopy Nanosphere lithography Localized particle plasmon resonance Copper phthalocyanine Single molecule device Molecule—metal surface interactions Nanotechnology Physical Chemistry Characterization and Evaluation of Materials Inorganic Chemistry Optics, Optoelectronics, Plasmonics and Optical Devices
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Atomic and Molecular Physics, and Optics Condensed Matter Physics Bioengineering Modeling and Simulation

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