Premium
Third‐order nonlinear optical properties of poly(1,4‐vinylenephenylene) and its derivatives
Author(s) -
Shim HongKu,
Lee Kwang Sup,
Jin JungIl
Publication year - 1996
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1996.021971101
Subject(s) - materials science , alkoxy group , polymer , alkoxide , nonlinear optics , polymer chemistry , phenylene , chemical engineering , chemistry , organic chemistry , nonlinear system , composite material , catalysis , alkyl , physics , quantum mechanics , engineering
Poly(1,4‐phenylenevinylene) (PPV) and its derivatives are readily processable and thermally stable polyconjugated polymers. Since PPV contains phenylene units, its structure can be easily altered and modified in the electronic structure. Moreover, PPV and the derivatives are easily prepared via water‐soluble or organic‐soluble precursor polymers. Various PPVs substituted with electron‐donating or ‐withdrawing groups were synthesized and their third‐order optical nonlinearities were investigated by third‐harmonic generation method or degenerate four‐wave mixing technique. When phenylene rings carry two alkoxy electron‐donating groups, the substituted PPVs show third‐order nonlinear optical properties up to an χ (3) value of about 10 −9 esu. In order to obtain polymeric materials having high optical quality, PPV and silica alkoxide can be mixed successfully by sol‐gel processing without any phase separation or precipitation. This unusual organic‐inorganic hybrid shows a great advantage in the photonics applications.