R. Centore et al., Nonlinear optical properties of some side chain copolymers based on benzoxazole containing chromophores, J POL SC PC, 37(5), 1999, pp. 603-608
Citations number
23
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Acrylate-methylmethacrylate copolymers have been synthesized for nonlinear
optical applications. Acrylate monomer units are characterized by the prese
nce in the side chain of phenylbenzoxazole groups containing electron donor
-electron acceptor substituents. The phase behavior of all polymers has bee
n investigated by DSC, X-ray diffraction and polarizing microscopy: two of
them exhibit liquid crystalline behavior of smectic type. For four polymers
, nonlinear optical properties have been examined by second harmonic genera
tion measurements on thin films (similar to 1 mu m thickness) electrically
poled by corona discharge. Second order susceptibility coefficients d(33) a
nd average relaxation times <tau >, relative to the time stability of the c
hromophore poling, have been measured. (C) 1999 John Wiley & Sons, Inc.