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  • Title: Spectroscopic characterization and Langmuir-Blodgett films of a novel azopolymer material.
    Author: Haro M, Ross DJ, Oriol L, Gascón I, Cea P, López MC, Aroca RF.
    Journal: Langmuir; 2007 Feb 13; 23(4):1804-9. PubMed ID: 17279659.
    Abstract:
    Spectroscopic 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.
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