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Reference type: Journal
Authors: Hasegawa T, Tatsuta S, Katsumoto Y
Article Title: Infrared spectroscopic study of molecular interaction of tacticity-controlled poly(N-isopropylacrylamide) in a cast film deposited on a solid substrate.
Publication date: 2010
Journal: Analytical and Bioanalytical Chemistry
Volume: 398
Issue: (5)
Page numbers: 2203-2209.
DOI: 10.1007/s00216-010-4113-x

Abstract: Analytical results of a series of poly(N-isopropylacrylamide) (PNiPA) with different tacticities using infrared spectroscopy are presented for studying the influence of the solvation and molecular interactions between the polymeric chains. Infrared spectra of solid matter samples of the compounds exhibit a systematic band intensity change for three band components at 1,680, 1,659, and 1,628 cm-1 involved in the amide I band. The three components correspond to the free, half, and full hydrogen bondings of the secondary amide group, which reflect the molecular configuration depending on the tacticity. When cast films of the compounds prepared on a solid surface are analyzed by infrared transmission spectrometry, another factor of the solvent used for the film preparation is found to be another factor which plays an important role in determining the molecular architecture in the films. This molecular imprint mechanism after the solvation is confirmed by measuring infrared multiple-angle incidence resolution spectra of annealed films. The molecular interactions in the polymeric samples have been revealed by the use of infrared spectroscopy and the tacticity-controlled samples
Template and target information: solvent
Author keywords: Diad tacticity, High-order structure, Polymer thin film, Infrared spectroscopy, Multiple-angle incidence resolution spectrometry

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