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Raman and surface enhanced Raman microscopy of microstructured polyethylenimine/DNA multilayers.
Langmuir. 2006 Feb 14; 22(4):1735-41.L

Abstract

We analyze microstructured multilayer films of poly(ethyleneimine) (PEI) and DNA by employing Raman and surface enhanced Raman spectroscopy (SERS). The microstructuring of the samples allows a simultaneous measurement of signal and reference in a single analytic process. Silver nanoparticles are implemented in the microstructured multilayers for SERS measurements. The recorded SERS spectra of PEI/DNA are dominated by the Raman bands of the DNA bases which show a larger mean enhancement than bands belonging to DNA backbone vibrations. Our results show that the combination of SERS and microstructured multilayer films provides an adapted way to characterize the polyelectrolytes as well as to measure the enhancement factor and the distance dependence for the SERS active silver nanoparticles. Furthermore, microstructured polyelectrolyte films containing SERS active nanoparticles are used for sensing molecules.

Authors+Show Affiliations

Applied Physics Department, University of Ulm, Albert-Einstein-Allee 11, 89069 Ulm, Germany.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16460099

Citation

Dootz, Rolf, et al. "Raman and Surface Enhanced Raman Microscopy of Microstructured polyethylenimine/DNA Multilayers." Langmuir : the ACS Journal of Surfaces and Colloids, vol. 22, no. 4, 2006, pp. 1735-41.
Dootz R, Nie J, Du B, et al. Raman and surface enhanced Raman microscopy of microstructured polyethylenimine/DNA multilayers. Langmuir. 2006;22(4):1735-41.
Dootz, R., Nie, J., Du, B., Herminghaus, S., & Pfohl, T. (2006). Raman and surface enhanced Raman microscopy of microstructured polyethylenimine/DNA multilayers. Langmuir : the ACS Journal of Surfaces and Colloids, 22(4), 1735-41.
Dootz R, et al. Raman and Surface Enhanced Raman Microscopy of Microstructured polyethylenimine/DNA Multilayers. Langmuir. 2006 Feb 14;22(4):1735-41. PubMed PMID: 16460099.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Raman and surface enhanced Raman microscopy of microstructured polyethylenimine/DNA multilayers. AU - Dootz,Rolf, AU - Nie,Jingjing, AU - Du,Binyang, AU - Herminghaus,Stephan, AU - Pfohl,Thomas, PY - 2006/2/8/pubmed PY - 2007/5/10/medline PY - 2006/2/8/entrez SP - 1735 EP - 41 JF - Langmuir : the ACS journal of surfaces and colloids JO - Langmuir VL - 22 IS - 4 N2 - We analyze microstructured multilayer films of poly(ethyleneimine) (PEI) and DNA by employing Raman and surface enhanced Raman spectroscopy (SERS). The microstructuring of the samples allows a simultaneous measurement of signal and reference in a single analytic process. Silver nanoparticles are implemented in the microstructured multilayers for SERS measurements. The recorded SERS spectra of PEI/DNA are dominated by the Raman bands of the DNA bases which show a larger mean enhancement than bands belonging to DNA backbone vibrations. Our results show that the combination of SERS and microstructured multilayer films provides an adapted way to characterize the polyelectrolytes as well as to measure the enhancement factor and the distance dependence for the SERS active silver nanoparticles. Furthermore, microstructured polyelectrolyte films containing SERS active nanoparticles are used for sensing molecules. SN - 0743-7463 UR - https://www.unboundmedicine.com/medline/citation/16460099/Raman_and_surface_enhanced_Raman_microscopy_of_microstructured_polyethylenimine/DNA_multilayers_ L2 - https://doi.org/10.1021/la052739y DB - PRIME DP - Unbound Medicine ER -