Calix(8)arene LB Superlattices: Pyroelectric Molecular Baskets |
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Authors: | Tim Richardson Michael BGreenwood Frank Davis Charles JMStirling |
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Institution: | 1. Centre for Molecular Materials and Department of Physics, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, U. K.;
2. Centre for Molecular Materials and Department of Chemistry, University of Sheffield, Dainton, Brook Hill, Sheffield S3 7HF U. K |
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Abstract: | Carboxyl and amino groups have been inserted into calix(8) arene rings in order to yield two materials which, when processed as alternate layer Langmuir-Blodgett assemblies, exhibit the pyroelectric effect. Such a temperature-dependent electric polarisation arises partially from the proton transfer between the acid and amine groups. The calix(8) arene system has been selected owing to the extreme tinness, of each monolayer(~1.0 nm), the resulting high density of acid-amine pairs and the very high thermal stability exhibited by calixarenes(typically m.p.>200℃). |
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Keywords: | calix(8) arene system LB superlattice Pyroelectric molecular basket |
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