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Cross-linked Chitosan and Poly(allyl amine) Thin Films

Published online by Cambridge University Press:  11 February 2011

Caroline L. Schauer ,
Paul E. Schoen  and
Frances S. Ligler
Caroline L. Schauer
Affiliation:
Naval Research Laboratory, Center for Bio/Molecular Science and Engineering, Code 6910, 4555 Overlook Ave. SW, Washington, DC 20375–5348, U.S.A
Paul E. Schoen
Affiliation:
Naval Research Laboratory, Center for Bio/Molecular Science and Engineering, Code 6910, 4555 Overlook Ave. SW, Washington, DC 20375–5348, U.S.A
Frances S. Ligler
Affiliation:
Naval Research Laboratory, Center for Bio/Molecular Science and Engineering, Code 6910, 4555 Overlook Ave. SW, Washington, DC 20375–5348, U.S.A
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Abstract

The alternation of chitin layers with various compounds allows nature to create novel materials with selective refractive properties. Various organisms employ layered materials for survival; for example, in butterflies such materials cause the apparent disappearance and reappearance during flight to evade predators. The selective light refraction is achieved through control of the thickness and index of refraction of the multiple layers. With the ultimate goal of reproducing these layers, thin single films of chitosan, the soluble form of chitin, and poly(allyl amine) have been prepared and their optical properties analyzed. Ellipsometry, reflectance IR, reflectance spectroscopy, SEM and software modeling were used to characterize these films. Possible applications for optical layered materials range from medical diagnostics to environmental monitoring.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 750: Symposium Y – Surface Engineering 2002–Synthesis, Characterization and Applications , 2002 , Y9.5
Copyright
Copyright © Materials Research Society 2003

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References

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