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Title: All Optical Determination of Microscopic and Macroscopic Structure of Chiral, Polar Microcrystals from Achiral, Nonpolar Molecules
Authors: Van Cleuvenbergen, Stijn ×
Hennrich, Gunther
Willot, Pieter
Koeckelberghs, Guy
Clays, Koen
Verbiest, Thierry
Van der Veen, Monique # ×
Issue Date: 12-May-2012
Publisher: American Chemical Society
Series Title: Journal of Physical Chemistry C vol:116 issue:22 pages:12219-12225
Abstract: Organic microcrystals obtained from an octupolar molecule are studied by polarized nonlinear optical microscopy. While two-photon fluorescence microscopy is employed to verify the monocrystallinity of the analyzed domains, second-harmonic generation microscopy allowed determination of the point group symmetry of the crystallites. This combined analysis revealed that the achiral, octupolar molecules form chiral and polar conglomerate structures, the former confirmed by circular dichroism spectroscopy. We additionally present a convenient and straightforward image analysis protocol, based on polarization dependent second-harmonic generation microscopy. This allows assessing the local organization and homogeneity of crystalline structures, highly relevant for technological applications, with high resolution and sensitivity.
ISSN: 1932-7447
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
Polymer Chemistry and Materials
Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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