The substitution effects of donor and acceptor on properties of poly(1,4-phenylenevinylene) derivatives. Syntheses of poly(2-methoxy-5-methylsulfinyl-1,4-phenylenevinylene) and its copolymers

Abstract

Electron donor and acceptor substituted poly(2-methoxy-5-methylsulfinyl-1,4-phenylenevinylene) (PMMSPV) and a series of copolymers containing 1,4-phenylenevinylene (PV) units were synthesized via the water-soluble precursor pathway and cast into films. The electrical conductivity of FeCl3-doped PMMSPV was 1.5 x 10(-4) S . cm(-1) and the copolymers showed conductivities in the range of 10(-4) similar to 10(-1) S . cm(-1) depending on the copolymer compositions. The second-order nonlinear optical coefficient of PMMSPV was obtained with second harmonic generation method. The measured d(33) value was 1.5 pm/V and gave no decay at 100 degrees C over 40 d.