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Optical Properties and van der Waals-London Dispersion Interactions in Inorganic and Biomolecular Assemblies

Published online by Cambridge University Press:  13 March 2014

Daniel M. Dryden ,
Yingfang Ma ,
Jacob Schimelman ,
Diana Acosta ,
Lijia Liu ,
Ozan Akkus ,
Mousa Younesi ,
Islam Anowarul ,
Linda K. Denoyer  and
Wai-Yim Ching
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Daniel M. Dryden*
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Yingfang Ma
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Jacob Schimelman
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Diana Acosta
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Lijia Liu
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Ozan Akkus
Affiliation:
Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Mousa Younesi
Affiliation:
Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Islam Anowarul
Affiliation:
Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Linda K. Denoyer
Affiliation:
Spectrum Square Associates Inc, Ithaca, NY 14850, U.S.A.
Wai-Yim Ching
Affiliation:
Department of Physics and Astronomy, University of Missouri-Kansas City, Kansas City, MO 64110, U.S.A.
Rudolf Podgornik
Affiliation:
Department of Physics, University of Massachusetts, Amherst, MA 01003, U.S.A.
V. Adrian Parsegian
Affiliation:
Department of Physics, University of Massachusetts, Amherst, MA 01003, U.S.A.
Nicole F. Steinmetz
Affiliation:
Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
Roger H. French
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A.
*
*corresponding author, [email protected]
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Abstract

The optical properties and electronic structure of AlPO4, SiO2, Type I collagen, and DNA were examined to gain insight into the van der Waals-London dispersion behavior of these materials. Interband optical properties of AlPO4 and SiO2 were derived from vacuum ultraviolet spectroscopy and spectroscopic ellipsometry, and showed a strong dependence on the crystals’ constituent tetrahedral units, with strong implications for the role of phosphate groups in biological materials. The UV-Vis decadic molar absorption of four DNA oligonucleotides was measured, and showed a strong dependence on composition and stacking sequence. A film of Type I collagen was studied using spectroscopic ellipsometry, and showed a characteristic shoulder in the fundamental absorption edge at 6.05 eV. Ab initio calculations based on density functional theory corroborated the experimental results and provided further insights into the electronic structures, interband transitions and vdW-Ld interaction potentials for these materials.

Keywords

electronic structurebiomaterialoptical properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1619: Symposium A – Modeling and Theory-Driven Design of Soft Materials , 2014 , mrsf13-1619-a01-09
Copyright
Copyright © Materials Research Society 2014 

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