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Spectroscopic characterization and Langmuir-Blodgett films of a novel azopolymer material.

AuthorsHaro Remón, Marta ; Ross, Daniel J.; Oriol, Luis; Gascón, Ignacio; Cea, Pilar; López, M. Carmen; Aroca, Ricardo F.
Issue Date4-Jan-2007
PublisherAmerican Chemical Society
CitationLangmuir 23(4): 1804-1809 (2007)
AbstractSpectroscopic characterization and fabrication of Langmuir and Langmuir−Blodgett (LB) films of an azopolymer−pyridine (PAzPy) are reported. UV−visible absorption and fluorescence spectra, Fourier transform infrared (FTIR) spectra, and Raman spectra were recorded. The vibrational assignment of the observed spectra is supported by a complete geometry optimization, followed by vibrational frequency and intensity computations of both the trans and cis forms of the monomer (AzPy) using density functional theory at the B3LYP 6-31G(d,p) level of theory. Langmuir monolayers of the polymer (PAzPy) were formed at the water−air interface, and LB films of high quality were formed onto solid substrates. The polymer LB films were investigated by surface-enhanced Raman scattering.
Publisher version (URL)http://dx.doi.org/10.1021/la061491p
Appears in Collections:(ICMA) Artículos
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