Perturbation-correlation moving-window two-dimensional correlation spectroscopy

Applied Spectroscopy
Shigeaki MoritaYukihiro Ozaki

Abstract

A new method of analysis, perturbation-correlation moving-window two-dimensional (PCMW2D) correlation spectroscopy, is proposed. For a spectral data set collected under an external perturbation, this method provides a pair of synchronous and asynchronous two-dimensional correlation spectra plotted on a plane between a spectral variable (e.g., wavenumber) axis and a perturbation variable (e.g., temperature) axis. One of the advantages of this new correlation analysis method is that complicated spectral variation along the perturbation direction can be monitored. It has been found that the synchronous and asynchronous PCMW2D correlation spectra are similar to the first perturbation derivative and negative second perturbation derivative spectra of the original data, respectively. To demonstrate the potential of PCMW2D correlation spectroscopy, it has been applied to temperature-dependent infrared (IR) spectra of a poly(vinyl alcohol) (PVA) film. The thermal behavior of the PVA film has been revealed by the PCMW2D correlation analysis. Two characteristic cross-peaks are observed in the synchronous PCMW2D correlation spectra generated from the temperature-dependent IR spectra between the crystalline phase C-O stretching band at 1141...Continue Reading

Citations

Jun 15, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Zhangxin YePeiyi Wu
Jan 21, 2017·Applied Spectroscopy·Young Jong Lee
Nov 19, 2015·Physical Chemistry Chemical Physics : PCCP·Shengtong Sun, Peiyi Wu
Jul 18, 2012·Applied Spectroscopy·Hideki Yamasaki, Shigeaki Morita
Mar 14, 2009·Applied Spectroscopy·Qi JiaZhi-Wu Yu
Jun 25, 2016·Applied Spectroscopy·Nan HuBangjiao Ye
Nov 5, 2015·Physical Chemistry Chemical Physics : PCCP·Shengtong Sun, Peiyi Wu
Jul 13, 2018·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Tatsuro SugawaraShin-Ichi Morita
May 23, 2019·Physical Chemistry Chemical Physics : PCCP·Yu ChenTiancheng Mu
Nov 8, 2013·Analytical and Bioanalytical Chemistry·Daitaro IshikawaYukihiro Ozaki
Jan 16, 2020·Drug Development and Industrial Pharmacy·Ryoma TanakaKazuhide Ashizawa
Feb 4, 2011·Physical Chemistry Chemical Physics : PCCP·Shengtong SunPeiyi Wu

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