Enhanced poling efficiency in highly thermal and photostable nonlinear optical chromophores

Mirko Faccini, Muralidharan Balakrishnan, Mart B.J. Diemeer, Zhi-Peng Hu, Koen Clays, Inge Asselberghs, Arne Leinse, Alfred Driessen, David Reinhoudt, Willem Verboom

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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 °C difference on the Tg attenuation). Furthermore, all chromophores in this study possess good processability and exhibit high thermal decomposition temperatures (highest Td = 360 °C).
Original languageEnglish
Pages (from-to)2141-2149
Number of pages9
JournalJournal of materials chemistry
Publication statusPublished - Mar 2008


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