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Title: Enhanced poling efficiency in highly thermal and photostable nonlinear optical chromophores
Authors: Faccini, Mirko ×
Balakrishnan, Muralidharan
Diemeer, Mart B. J
Hu, Zhi-Peng
Clays, Koen
Asselberghs, Inge
Leinse, Arne
Driessen, Alfred
Reinhoudt, David N
Verboom, Willem #
Issue Date: 2008
Publisher: Royal Society of Chemistry
Series Title: Journal of Materials Chemistry vol:18 issue:18 pages:2141-2149
Abstract: A series of nonlinear optical chromophores based on the highly thermal and photostable tricyanovinylidenediphenylaminobenzene ( TCVDPA) was synthesized and their thermal and optical properties were investigated. Modification of the TCVDPA chromophore with bulky groups provides reduction of dipole-dipole interactions and thus great improvement of the macroscopic electro-optic (EO) response of the polymeric materials obtained by incorporating these derivatives as a guest at high loading in polysulfone. The best result was obtained with chromophore C5, bearing fluorinated aromatic substituents, which shows a doubling of the EO activity at 30 wt% ( 25 pm V-1 at 830 nm) compared with the pristine TCVDPA. The bulkier the chromophore, the lower the induced plasticization effect (as much as 50 degrees C difference on the T-g attenuation). Furthermore, all chromophores in this study possess good processability and exhibit high thermal decomposition temperatures (highest T-d = 360 degrees C).
ISSN: 0959-9428
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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