Infrared optical properties and AFM of spin-cast chitosan films chemically modified with 1,2 Epoxy-3-phenoxy-propane

W. H. Nosal; D. W. Thompson; L. Yan; S. Sarkar; A. Subramanian; J. A. Woollam

doi:10.1016/j.colsurfb.2005.08.006

Infrared optical properties and AFM of spin-cast chitosan films chemically modified with 1,2 Epoxy-3-phenoxy-propane

W. H. Nosal, D. W. Thompson, L. Yan, S. Sarkar, A. Subramanian, J. A. Woollam

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

16 Scopus citations

Abstract

Chemical modification of spin-cast chitosan films has been performed. This modification involves the attachment of 1,2 Epoxy-3-phenoxy-propane, commonly known as glycidyl phenyl ether (GPE), to the amine group of the chitosan molecule. Optical properties of modified films have been determined in the infrared region of the spectrum using spectroscopic ellipsometry, and are reported in this paper. Special attention is paid to the infrared region where the index of refraction and extinction coefficients from 750 to 4000 cm ^-1 were determined. Difference plots of IR optical data before and after chemical modification were generated to confirm that modification had occurred. Optical modeling of infrared spectroscopic ellipsometry (IRSE) data with respect to chemical bond vibrations has also been performed. This modeling involved curve fitting of resonant chemical bond absorptions using Lorentz oscillators. These oscillator models allow for comparison of modified chitosan to unmodified chitosan. The purpose of this research was to determine infrared optical constants of chemically modified chitosan films This work shows that surface chemistry of biomaterials can be studied quite sensitively with spectroscopy ellipsometry, detecting as little as 100 ng/cm² of GPE.

Original language	English (US)
Pages (from-to)	26-31
Number of pages	6
Journal	Colloids and Surfaces B: Biointerfaces
Volume	46
Issue number	1
DOIs	https://doi.org/10.1016/j.colsurfb.2005.08.006
State	Published - Nov 25 2005

Keywords

AFM
Chitin/chitosan
Ellipsometry
Infrared spectrum
Surface chemical modification

ASJC Scopus subject areas

Biotechnology
Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/j.colsurfb.2005.08.006

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title = "Infrared optical properties and AFM of spin-cast chitosan films chemically modified with 1,2 Epoxy-3-phenoxy-propane",

abstract = "Chemical modification of spin-cast chitosan films has been performed. This modification involves the attachment of 1,2 Epoxy-3-phenoxy-propane, commonly known as glycidyl phenyl ether (GPE), to the amine group of the chitosan molecule. Optical properties of modified films have been determined in the infrared region of the spectrum using spectroscopic ellipsometry, and are reported in this paper. Special attention is paid to the infrared region where the index of refraction and extinction coefficients from 750 to 4000 cm -1 were determined. Difference plots of IR optical data before and after chemical modification were generated to confirm that modification had occurred. Optical modeling of infrared spectroscopic ellipsometry (IRSE) data with respect to chemical bond vibrations has also been performed. This modeling involved curve fitting of resonant chemical bond absorptions using Lorentz oscillators. These oscillator models allow for comparison of modified chitosan to unmodified chitosan. The purpose of this research was to determine infrared optical constants of chemically modified chitosan films This work shows that surface chemistry of biomaterials can be studied quite sensitively with spectroscopy ellipsometry, detecting as little as 100 ng/cm2 of GPE.",

keywords = "AFM, Chitin/chitosan, Ellipsometry, Infrared spectrum, Surface chemical modification",

author = "Nosal, {W. H.} and Thompson, {D. W.} and L. Yan and S. Sarkar and A. Subramanian and Woollam, {J. A.}",

note = "Funding Information: Thanks are given to Army Research Laboratory (ARL) grant number 25-1105-0005-016 as well as to the College of Engineering and Technology at the University of Nebraska-Lincoln for financial support.",

year = "2005",

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AU - Nosal, W. H.

AU - Thompson, D. W.

AU - Yan, L.

AU - Sarkar, S.

AU - Subramanian, A.

AU - Woollam, J. A.

N1 - Funding Information: Thanks are given to Army Research Laboratory (ARL) grant number 25-1105-0005-016 as well as to the College of Engineering and Technology at the University of Nebraska-Lincoln for financial support.

PY - 2005/11/25

Y1 - 2005/11/25

N2 - Chemical modification of spin-cast chitosan films has been performed. This modification involves the attachment of 1,2 Epoxy-3-phenoxy-propane, commonly known as glycidyl phenyl ether (GPE), to the amine group of the chitosan molecule. Optical properties of modified films have been determined in the infrared region of the spectrum using spectroscopic ellipsometry, and are reported in this paper. Special attention is paid to the infrared region where the index of refraction and extinction coefficients from 750 to 4000 cm -1 were determined. Difference plots of IR optical data before and after chemical modification were generated to confirm that modification had occurred. Optical modeling of infrared spectroscopic ellipsometry (IRSE) data with respect to chemical bond vibrations has also been performed. This modeling involved curve fitting of resonant chemical bond absorptions using Lorentz oscillators. These oscillator models allow for comparison of modified chitosan to unmodified chitosan. The purpose of this research was to determine infrared optical constants of chemically modified chitosan films This work shows that surface chemistry of biomaterials can be studied quite sensitively with spectroscopy ellipsometry, detecting as little as 100 ng/cm2 of GPE.

AB - Chemical modification of spin-cast chitosan films has been performed. This modification involves the attachment of 1,2 Epoxy-3-phenoxy-propane, commonly known as glycidyl phenyl ether (GPE), to the amine group of the chitosan molecule. Optical properties of modified films have been determined in the infrared region of the spectrum using spectroscopic ellipsometry, and are reported in this paper. Special attention is paid to the infrared region where the index of refraction and extinction coefficients from 750 to 4000 cm -1 were determined. Difference plots of IR optical data before and after chemical modification were generated to confirm that modification had occurred. Optical modeling of infrared spectroscopic ellipsometry (IRSE) data with respect to chemical bond vibrations has also been performed. This modeling involved curve fitting of resonant chemical bond absorptions using Lorentz oscillators. These oscillator models allow for comparison of modified chitosan to unmodified chitosan. The purpose of this research was to determine infrared optical constants of chemically modified chitosan films This work shows that surface chemistry of biomaterials can be studied quite sensitively with spectroscopy ellipsometry, detecting as little as 100 ng/cm2 of GPE.

KW - AFM

KW - Chitin/chitosan

KW - Ellipsometry

KW - Infrared spectrum

KW - Surface chemical modification

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Infrared optical properties and AFM of spin-cast chitosan films chemically modified with 1,2 Epoxy-3-phenoxy-propane

Abstract

Keywords

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