Preparation and characterization of poly(amide-imide) multilayer films

Nishikata, Yasunari; Kakimoto, Masa–aki; Morikawa, Atsushi; Imai, Yoshio

doi:10.1016/0040-6090(88)90042-9

Cited by 42 publications

(11 citation statements)

References 3 publications

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“…Monolayers composed of alkanethiols with end groups such as X = OH or NH 2 have technological importance in applications such as control of ionic binding, in preparation of covalent multilayer films, and in studies of biocompatibility and wetting. ,,− Consequently, there is much interest in whether these form dense, ordered monolayers. The OH and NH 2 end groups are nonbulky; therefore, the (√3×√3)R30° lattice is sterically allowed.…”

Section: A Alternate End Groupsmentioning

confidence: 99%

Characterization of Organosulfur Molecular Monolayers on Au(111) using Scanning Tunneling Microscopy

1997

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Section: A Alternate End Groupsmentioning

confidence: 99%

Characterization of Organosulfur Molecular Monolayers on Au(111) using Scanning Tunneling Microscopy

1997

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“…Poly(amic acid), PA , was synthesized from pyromellitic dianhydride (PMDA, Tokyo Kasei Co.) and 4,4‘-oxydianiline (ODA, Tokyo Kasei Co.) according to the procedure previously reported. , Briefly, an equimolecular amount of ODA (3.0 g) was added dropwise into a N , N -dimethylacetamide (DMAc, Tokyo Kasei Co., 50 mL) solution of PMDA (3.27 g) with stirring under a stream of N 2 gas at 15 °C. After further stirring for 1 h at 15 °C and for 3 h at 25 °C, the viscous liquid was precipitated by pouring it into ethanol (1500 mL) and purified by repeating the reprecipitation by pouring the DMAc solution (50 mL) into ethanol (1500 mL) three times (yield 90%).…”

Section: Methodsmentioning

confidence: 99%

Construction of Nanostructured Carbonaceous Films by the Layer-by-Layer Self-Assembly of Poly(diallyldimethylammonium) Chloride and Poly(amic acid) and Subsequent Pyrolysis

et al. 1999

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Poly(diallyldimethylammonium chloride), PD, and poly(amic acid), PA, were layer-by-layer self-assembled onto quartz and mica substrates, S. Quantitative formation of the self-assembled films, S−(PD/PA) n , were characterized by absorption spectroscopy, by quartz crystal microbalance measurements, and by scanning force microscopy (AFM). Pyrolysis of the S−(PD/PA) n films by heating to 1000 °C proceeded via the formation of subsequent carbonization of a polyimide intermediate which ultimately produced a graphite-like carbonaceous film with conductivities in the 150−200 S cm-1 range. AFM images indicated the assembly of laminar carbon nano islands with increasing n in S−(PD/PA ) n .

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“…Hydrophobic glass slides were made by exposing precleaned microscope slides to 1,1,1,3,3,3-hexamethyldisilazane vapor for 36 h. The spreading solvent for all LB solutions was the 3:1 (v/v) mixture of benzene and DMAc mentioned above. This mixture has been found to be a good solvent for a wide range of materials and a superlative spreading agent for monolayer formation …”

Section: Methodsmentioning

confidence: 99%

Langmuir−Blodgett Films of Conducting Diblock Copolymers

et al. 1998

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Novel amphiphilic block copolymers have been synthesized via ring-opening metathesis polymerization (ROMP), where one block is a precursor to a water-soluble polymer and the other block is a precursor to polyacetylene. The water-soluble block is made from a silyl ester protected carboxylic acid functionalized polymer. The silyl ester groups are used to protect the ROMP initiator from the carboxylic acid groups during polymerization and are easily deprotected afterward. The polyacetylene precursor block is made via ROMP using an approach known as the "Durham" route to polyacetylene. These amphiphilic block copolymers are surface active and quite amenable to the Langmuir-Blodgett (LB) technique, whereby films of these materials were fabricated and converted to polyacetylene-containing films by heating. UVvisible spectroscopy showed that the polyacetylene chains are oriented mostly in the plane of the LB film and in the dipping direction of the substrate. Upon doping with iodine, these films were shown to have better conductivities than either spin-coated or bulk cast films made from the same materials. The higher conductivity is explained by the high degree of order imparted using the LB technique.

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Preparation and characterization of poly(amide-imide) multilayer films

Cited by 42 publications

References 3 publications

Characterization of Organosulfur Molecular Monolayers on Au(111) using Scanning Tunneling Microscopy

Characterization of Organosulfur Molecular Monolayers on Au(111) using Scanning Tunneling Microscopy

Construction of Nanostructured Carbonaceous Films by the Layer-by-Layer Self-Assembly of Poly(diallyldimethylammonium) Chloride and Poly(amic acid) and Subsequent Pyrolysis

Langmuir−Blodgett Films of Conducting Diblock Copolymers

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