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Calcium Oxalate Monohydrate Precipitation at Phospholipid Monolayer Phase Boundaries

Published online by Cambridge University Press:  17 March 2011

Isa O. Benítez  and
Daniel R. Talham
Isa O. Benítez
Affiliation:
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200
Daniel R. Talham
Affiliation:
Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200
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Abstract

The precipitation of calcium oxalate monohydrate (COM) was observed at biphasic phospholipid Langmuir monolayers with the aid of Brewster angle microscopy. COM appears preferentially at phase boundaries of a monolayer of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) in a state of liquid expanded/liquid condensed coexistance. However, when the phase boundary is created by two different phospholipids that are phase segregated, such as DPPC and 1,2-dimiristoyl-sn-glycero-3-phosphocholine (DMPC), crystal formation occurs away from the interface. It is suggested that COM growth at phase boundaries is preferred only when there is molecular exchange between the phases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 823: Symposium W – Biological and Bioinspired Materials and Devices , 2004 , W4.14
Copyright
Copyright © Materials Research Society 2004

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