Issue 35, 2006
From the journal:

Physical Chemistry Chemical Physics

Scanning pyroelectric microscopy revealing the spatial polarity distribution in topologically centric crystals of trans-4-chloro-4′-nitrostilbene

N.-R. Behrnd,a   G. Couderc,a   M. Wübbenhorstb  and  J. Hulliger*a  

* Corresponding authors

a Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, Berne, Switzerland

b Laboratory for Acoustics and Thermal Physics, Department of Physics and Astronomy, K.U. Leuven—Celestijnenlaan 200D, Heverlee, Belgium
E-mail: publication.hulliger@iac.unibe.ch
Fax: 41 31 631 3993
Tel: 41 31 631 4241

Abstract

Scanning pyroelectric microscopy (SPEM) was applied to investigate grown-in polarity in trans-4-chloro-4′-nitrostilbene (CNS) single crystals. Sectors {011} and {01[1 with combining macron]} were scanned for cross sections perpendicular to the a-direction. A rotational analysis for {011}, {01[1 with combining macron]} faces was performed for a needle like crystal turned around the a-axis. All pyroelectric experiments confirm a bipolar grown-in state of polarity for sector involving the twofold axis b. These measurements agree with theoretical force field and stochastic calculations, predicting a bipolar state and a nearly identical extent of polarity for two different sectors.

Graphical abstract: Scanning pyroelectric microscopy revealing the spatial polarity distribution in topologically centric crystals of trans-4-chloro-4′-nitrostilbene

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Article information

DOI
https://doi.org/10.1039/B607409J
Article type
Paper
Submitted
25 May 2006
Accepted
13 Jul 2006
First published
24 Jul 2006

Phys. Chem. Chem. Phys., 2006,8, 4131-4137

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Scanning pyroelectric microscopy revealing the spatial polarity distribution in topologically centric crystals of trans-4-chloro-4′-nitrostilbene

N.-R. Behrnd, G. Couderc, M. Wübbenhorst and J. Hulliger, Phys. Chem. Chem. Phys., 2006, 8, 4131 DOI: 10.1039/B607409J

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