Highly oriented films of poly(dimethylsilylene) by friction deposition

Tanigaki, Nobutaka; Yase, Kiyoshi; Kaito, Akira; Ueno, Katsuhiko

doi:10.1016/0032-3861(95)97351-f

Cited by 62 publications

(47 citation statements)

References 17 publications

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“…Here, we present the formation of oriented structures of poly(dialkylstannane)s, encouraged by the reported uniaxial orientation of polysilanes, [14][15][16][17][18][19][20][21] bearing in mind, of course, that parameters that influence orientation processes, such as melting temperature, solubility, and chain rigidity differ for polysilanes and polystannanes. A variety of techniques have been developed to induce orientation of polymer molecules, which is crucial to investigate and exploit the anisotropic mechanical, optical, and electronic properties of the macromolecules.…”

Section: Introductionmentioning

confidence: 99%

Oriented Poly(dialkylstannane)s

Choffat

Fornera

Smith

et al. 2008

Adv Funct Materials

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The inorganic (or ‘organometallic’) polymers poly(dibutylstannane), poly(dioctylstannane), and poly(didodecylstannane) have been oriented by shear forces, the tensile drawing of blends with polyethylene, and deposition from solution onto glass slides coated with an oriented, friction‐deposited poly(tetrafluoroethylene) (PTFE) layer. Orientation of the polystannanes has been examined by polarization microscopy, UV‐vis spectroscopy with polarized light, and X‐ray diffraction and their direction is found to depend on the length of the alkyl side groups and the method of orientation. Remarkably, in some cases the polystannane backbones are oriented parallel and in other instances perpendicular to the direction of the external orientation stimuli. The latter structural arrangement is most conspicuous for polymers substituted with dodecyl side groups, which are found to align parallel to the applied orientation direction, which forces the polymer backbone into a perpendicular position. Finally, UV‐vis spectra indicate that changes in the backbone conformation of certain polystannanes might be induced by applying mechanical stress.

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Section: Introductionmentioning

confidence: 99%

Oriented Poly(dialkylstannane)s

Choffat

Fornera

Smith

et al. 2008

Adv Funct Materials

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“…The deposited molecular chain was found to be aligned perpendicular to the face of the substrate under appropriate conditions. The friction-transfer technique [16] is superior in terms of not only producing an excellently oriented film but also being applicable for most polysilanes, even the insoluble polysilanes. These five methods were mechanical techniques, while the sixth method was the epitaxial growth method.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of the thin films of poly(methylpentoxysilane) homopolymers and copolymers

Kato

Karatsu

Kaito

et al. 2003

Polymer

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“…We have prepared highly oriented ultrathin films of PDMS by the friction deposition technique, in which a powder disk of PDMS is rubbed against a clean substrate of quartz above the phase transition temperature. [15] Therefore, it is expected from the success of the friction transfer of PDMS films that oriented bulk materials of PDMS could be prepared by extruding PDMS under shearing and elongation stresses in the hexagonal phase. In this work, we tried to prepare highly oriented materials of PDMS, poly(dimethylsilylene-co-methylethylsilylene) (PMMME) and poly(diethylsilylene-comethylethylsilylene) (PEEME) aiming at approaching the experimental modulus to the theoretical modulus of Si1Si linkages as much as possible.…”

Section: Introductionmentioning

confidence: 99%