Two-dimensional infrared correlation spectroscopy: Global phase angles for specific analytical systems

Shin ichi Morita; Saratchandra Shanmukh; Richard A. Dluhy

doi:10.1016/j.molstruc.2006.03.016

Two-dimensional infrared correlation spectroscopy: Global phase angles for specific analytical systems

Shin ichi Morita, Saratchandra Shanmukh, Richard A. Dluhy

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

In this paper we discuss further properties of 2D correlation spectroscopy using the global phase angle intensity normalization method. The 2D global phase angle analysis method has been shown to discriminate against arbitrary signal amplitude changes not related to real correlation intensities. We have confirmed that the positive or negative sign of a global phase angle 2D correlation peak is a direct expression of the sequential order of signal intensity changes. We have derived analytical solutions for 2D correlation algorithms using the global phase angle based on sinusoidal, exponential decay, and Lorentzian model functions. These derivations show that the experimental determination of the global phase angle can provide a quantitative measurement of sequential order when using these specific analytical models.

Original language	English
Pages (from-to)	48-51
Number of pages	4
Journal	Journal of Molecular Structure
Volume	799
Issue number	1-3
DOIs	https://doi.org/10.1016/j.molstruc.2006.03.016
Publication status	Published - 2006 Nov 6
Externally published	Yes

Keywords

2D
Correlation
IR
Phase angle
Quantitative model
Sequential order
Spectroscopy

ASJC Scopus subject areas

Analytical Chemistry
Spectroscopy
Organic Chemistry
Inorganic Chemistry

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10.1016/j.molstruc.2006.03.016

Cite this

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title = "Two-dimensional infrared correlation spectroscopy: Global phase angles for specific analytical systems",

abstract = "In this paper we discuss further properties of 2D correlation spectroscopy using the global phase angle intensity normalization method. The 2D global phase angle analysis method has been shown to discriminate against arbitrary signal amplitude changes not related to real correlation intensities. We have confirmed that the positive or negative sign of a global phase angle 2D correlation peak is a direct expression of the sequential order of signal intensity changes. We have derived analytical solutions for 2D correlation algorithms using the global phase angle based on sinusoidal, exponential decay, and Lorentzian model functions. These derivations show that the experimental determination of the global phase angle can provide a quantitative measurement of sequential order when using these specific analytical models.",

keywords = "2D, Correlation, IR, Phase angle, Quantitative model, Sequential order, Spectroscopy",

author = "Morita, {Shin ichi} and Saratchandra Shanmukh and Dluhy, {Richard A.}",

note = "Funding Information: The work described here was supported by the U.S. Public Health Service through National Institutes of Health Grant EB001956 (R.A.D.).",

year = "2006",

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doi = "10.1016/j.molstruc.2006.03.016",

language = "English",

volume = "799",

pages = "48--51",

journal = "Journal of Molecular Structure",

issn = "0022-2860",

publisher = "Elsevier",

number = "1-3",

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TY - JOUR

T1 - Two-dimensional infrared correlation spectroscopy

T2 - Global phase angles for specific analytical systems

AU - Morita, Shin ichi

AU - Shanmukh, Saratchandra

AU - Dluhy, Richard A.

N1 - Funding Information: The work described here was supported by the U.S. Public Health Service through National Institutes of Health Grant EB001956 (R.A.D.).

PY - 2006/11/6

Y1 - 2006/11/6

N2 - In this paper we discuss further properties of 2D correlation spectroscopy using the global phase angle intensity normalization method. The 2D global phase angle analysis method has been shown to discriminate against arbitrary signal amplitude changes not related to real correlation intensities. We have confirmed that the positive or negative sign of a global phase angle 2D correlation peak is a direct expression of the sequential order of signal intensity changes. We have derived analytical solutions for 2D correlation algorithms using the global phase angle based on sinusoidal, exponential decay, and Lorentzian model functions. These derivations show that the experimental determination of the global phase angle can provide a quantitative measurement of sequential order when using these specific analytical models.

AB - In this paper we discuss further properties of 2D correlation spectroscopy using the global phase angle intensity normalization method. The 2D global phase angle analysis method has been shown to discriminate against arbitrary signal amplitude changes not related to real correlation intensities. We have confirmed that the positive or negative sign of a global phase angle 2D correlation peak is a direct expression of the sequential order of signal intensity changes. We have derived analytical solutions for 2D correlation algorithms using the global phase angle based on sinusoidal, exponential decay, and Lorentzian model functions. These derivations show that the experimental determination of the global phase angle can provide a quantitative measurement of sequential order when using these specific analytical models.

KW - 2D

KW - Correlation

KW - IR

KW - Phase angle

KW - Quantitative model

KW - Sequential order

KW - Spectroscopy

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U2 - 10.1016/j.molstruc.2006.03.016

DO - 10.1016/j.molstruc.2006.03.016

M3 - Article

AN - SCOPUS:33750006818

SN - 0022-2860

VL - 799

SP - 48

EP - 51

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

IS - 1-3

ER -

Two-dimensional infrared correlation spectroscopy: Global phase angles for specific analytical systems

Abstract

Keywords

ASJC Scopus subject areas

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