A copolymer of 2,3,5,6-tetrafluoro-1,4-phenylenevinylene and 2,5-dioctyloxy-1,4-phenylenevineylene [co(TFPV-DOPV)], containing more than 60% of tetrafluorophenylenevinylene monomeric units, was synthesized by the Stille cross-coupling reaction. Its linear and nonlinear optical properties were investigated. Linear absorption and photoluminescence measurements performed on thin films and solution indicate interchain migration upon excitation. The Z-scan technique was used to evaluate the third-order nonlinear susceptibility at lambda = 1064 nm. A very high refractive nonlinearity (n(2) = (-10 +/- 2) x 10(-12) cm(2) (.) W-1) was measured with a value one order of magnitude larger than that of the corresponding dialkoxy-substituted homopolymer.

Synthesis and optical properties of a copolymer of tetrafluoro- and dialkoxy-substituted poly (p-phenylenevinylene) with a high percentage of fluorinated units

BABUDRI, Francesco;FARINOLA, Gianluca Maria;TOMMASI, Raffaele
2003-01-01

Abstract

A copolymer of 2,3,5,6-tetrafluoro-1,4-phenylenevinylene and 2,5-dioctyloxy-1,4-phenylenevineylene [co(TFPV-DOPV)], containing more than 60% of tetrafluorophenylenevinylene monomeric units, was synthesized by the Stille cross-coupling reaction. Its linear and nonlinear optical properties were investigated. Linear absorption and photoluminescence measurements performed on thin films and solution indicate interchain migration upon excitation. The Z-scan technique was used to evaluate the third-order nonlinear susceptibility at lambda = 1064 nm. A very high refractive nonlinearity (n(2) = (-10 +/- 2) x 10(-12) cm(2) (.) W-1) was measured with a value one order of magnitude larger than that of the corresponding dialkoxy-substituted homopolymer.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/133152
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