Direct synthesis of aligned cis-rich polyacetylene films using low-temperature nematic liquid crystals

Akagi, Kazuo; Katayama, S.; Ito, Masayoshi; Shirakawa, Hideki; Araya, Kotaro

doi:10.1016/0379-6779(89)90673-5

Cited by 37 publications

(13 citation statements)

References 7 publications

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“…[44][45][46][47][48] This approach affords an alignment of even ultrathin films with semitransparency that is suitable for measurements of nonlinear optics. 49 The macroscopically aligned PA films prepared in a nematic liquid crystal under the gravity flow and magnetic field show high conductivities of 10 4 S/cm after iodine doping, and anisotropies of ca.…”

Section: Background Of Polyacetylene (Pa)mentioning

confidence: 99%

Helical Polyacetylene: Asymmetric Polymerization in a Chiral Liquid-Crystal Field

2009

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with expertise in functional conjugated polymers. His research interests have involved electrically conducting polymers and liquidcrystalline, luminescent, and photoresponsive conjugated polymers, with works focused on the synthesis of helical polyacetylene in the chiral nematic liquid-crystal field. He has also been engaged in development of liquid-crystalline aromatic conjugated polymers with linearly and circularly polarized optoelectronic properties. He graduated from the

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Section: Background Of Polyacetylene (Pa)mentioning

confidence: 99%

Helical Polyacetylene: Asymmetric Polymerization in a Chiral Liquid-Crystal Field

2009

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“…Particle track-etched membranes (PTMs), ,,,,− anodic aluminum oxide (AAO) membranes, − ,,,,− mesoporous silica and other mesoporous rigid solids ,,− , exemplify hard templates. Assemblies of block copolymers, − surfactants and aggregates, − liquid crystals, − biomolecules, − …”

Section: Assembly and Morphologymentioning

confidence: 99%

One-Dimensional Nanostructures of π-Conjugated Molecular Systems: Assembly, Properties, and Applications from Photovoltaics, Sensors, and Nanophotonics to Nanoelectronics

2010

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This paper presents a comprehensive review of the literature on one-dimensional (1D) nanostructures (nanowires, nanoribbons, nanotubes, nanobelts, and nanofibers) of π-conjugated small molecules, oligomers, and polymers. The diverse methods used in assembling the molecular building blocks into 1D functional nanostructures and nanodevices are discussed, including hard and soft template-assisted synthesis, electrospinning, nanolithography, self-assembly in solution and at interfaces, physical vapor transport, and other strategies. Optical, charge transport, electronic, and photoconductive properties of nanowires and nanotubes of selected classes of π-conjugated molecular systems are discussed next, highlighting unique features of the 1D nanostructures compared to 2D thin films. Overview of applications of these 1D organic nanostructures ranging from nanoscale light-emitting diodes, field-emission devices, organic photovoltaics, sensors/biosensors, spin-electronics, and nanophotonics to nanoelectronics is then given. The final section provides our brief concluding comments on the status of the field and on areas of outstanding challenges and opportunities for future work. We believe that the emerging confluence of nanoscience and organic semiconductors will greatly enrich both fields while leading to enhanced performance in organic electronics and affordable nanotechnologies.

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“…The resulting polyacetylene ®lm showed a copper-like conductivity (up to 10 5 S/cm) after having been stretched and doped with iodine [415]. Replacing the silicon oil with a nematic liquid crystal phase led to the formation of partially aligned, highly conducting polyacetylene ®lms [378,416]. Subsequently, polyacetylene ®lms with a highly oriented ®brillar morphology were obtained (Fig.…”

Section: Advanced Microfabrications Of Oriented and Patterned Conjugamentioning

confidence: 99%

Advanced syntheses and microfabrications of conjugated polymers, C60-containing polymers and carbon nanotubes for optoelectronic applications

Dai

1999

Polym. Adv. Technol.

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Direct synthesis of aligned cis-rich polyacetylene films using low-temperature nematic liquid crystals

Cited by 37 publications

References 7 publications

Helical Polyacetylene: Asymmetric Polymerization in a Chiral Liquid-Crystal Field

Helical Polyacetylene: Asymmetric Polymerization in a Chiral Liquid-Crystal Field

One-Dimensional Nanostructures of π-Conjugated Molecular Systems: Assembly, Properties, and Applications from Photovoltaics, Sensors, and Nanophotonics to Nanoelectronics

Advanced syntheses and microfabrications of conjugated polymers, C60-containing polymers and carbon nanotubes for optoelectronic applications

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