Preparation and characterization of thiophene copolymers with second order non-linear optical properties
- Della Casa C.
- Fraleoni Morgera A.
- Lanzi M.
- Costa Bizzarri P.
- Paganin L.
- Bertinelli F.
- Schenetti L.
- Mucci A.
- Sarcinelli F.
- Quatela A.
- CASALBONI, MAURO
DOIAbstract
Azobenzene-substituted polythiophenes were prepared by copolymerization of 3-alkylthiophenes functionalized with an azo-chromophore and 3-alkylthiophenes as plastifying comonomers to improve solubility. Monomers with different oligomethylenic spacer and alkylic chain lengths were synthesized and copolymerized via FeCl3 oxidative polymerization. Polymer soluble fractions were characterized by H-1 and C-13 NMR, FTIR, UV-Vis spectroscopy, and GPC, DSC and TGA. Second-order non-linear optical properties were measured by the second harmonic generation technique
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