Dipole moment of a modified poly(3-alkylthiophene) at the air/water interface

In experiment, Maxwell's displacement current flew through the structure containing a metal electrode, an air-gap insulating layer and a Langmuir monolayer situated on the water surface. This contactless arrangement provided a direct insight in the orientational motion of the monolayer constitu...

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Bibliographic Details
Published in:Thin solid films 2002, Vol.402 (1), p.190-194
Main Authors: Cirák, J., Tomčı&#x0301, k, P., Barančok, D., Bolognesi, A., Ragazzi, M.
Format: Article
Language:English
Subjects:
Applied sciences
Dipole moment
Electrical, magnetic and optical properties
Exact sciences and technology
Langmuir monolayer
Organic polymers
Physicochemistry of polymers
Polythiophenes
Properties and characterization
Surface pressure
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Summary:In experiment, Maxwell's displacement current flew through the structure containing a metal electrode, an air-gap insulating layer and a Langmuir monolayer situated on the water surface. This contactless arrangement provided a direct insight in the orientational motion of the monolayer constituting molecules. The effect of the surface pressure upon the molecular conformation was monitored by evaluating the vertical component of the dipole moment. The results were compared to and justified by the molecular dynamics calculation. These measurements and simulations were applied to a modified poly(3-alkyl-thiophene) having the polar metoxy chain ends.
ISSN:0040-6090
1879-2731
DOI:10.1016/S0040-6090(01)01682-0