Structure and Nonlinear Optical Properties of Diacetylene Thin Films Vapor-Deposited on Highly Oriented Polytetrafluoroethylene Thin Films
- 1 July 1995
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 34 (7S)
- https://doi.org/10.1143/jjap.34.3876
Abstract
Five diacetylene compounds were vapor-deposited on a highly oriented thin film of polytetrafluoroethylene (PTFE) prepared by mechanical deposition. 1,6-Di-( N-carbazolyl)-2,4-hexadiyne (DCHD) film was composed of needlelike crystallites along the chain axis of the PTFE macromolecules. The DCHD crystal was oriented with respect to the PTFE crystal substrate in the relation of (100)*[010] D C H D || (100)[001] P T F E . Other diacetylenes also formed uniaxially oriented thin layers. Upon photoirradiation, diacetylene films changed to polymer films having extremely high crystallinity and considerable in-plane dichroism. The third-order susceptibility χ(3) of the uniaxially oriented polydiacetylene films were several times larger than those of the randomly oriented films. Crystal growth observed by electron microscopy on local and microscopic scales was confirmed by THG measurement on a macroscopic scale.Keywords
This publication has 28 references indexed in Scilit:
- Structures and nonlinear optical properties of 4-(N,N-dimethylamino)-3-acetamidonitrobenzene films prepared by vapor depositionThin Solid Films, 1993
- Epitaxial growth of diacetylene vapor deposition film on an oriented Langmuir monolayerThe Journal of Physical Chemistry, 1991
- Epitaxial growth of 2,5-distyrylpyrazine from the vapor phaseJournal of Crystal Growth, 1991
- Epitaxial growth of chloroaluminum and vanadyl phthalocyanine films on alkali halide single crystals by the molecular-beam-epitaxy techniqueJournal of Applied Physics, 1991
- Molecular Orientation and Film Morphology of Calcium Stearate Deposited on Several SubstratesJapanese Journal of Applied Physics, 1989
- Morphology, linear and nonlinear optical studies of poly[1,6-di(N-carbazolyl)-2,4 hexadiyne] thin films (pDCH)The Journal of Chemical Physics, 1988
- Optical third-harmonic generation from polydiacetylene thin films deposited by vacuum evaporationElectronics Letters, 1987
- Structure and disorder of polydiacetylene: poly(4BCMU)Synthetic Metals, 1987
- Nonlinear interferometry in Langmuir-Blodgett multilayers of polydiacetyleneOptics Communications, 1983
- Poly-[1,2-bis-(p-tolylsulfonyloxymethylen)-1-buten-3-inylen]Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1974