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Article
Synthesis and characterization of poly(2,6-dialkoxy-1,5-naphthylene)s with low dielectric constants
An efficient method to decrease dielectric constant (ε) of poly(2,6-dihydroxy-1,5-naphthylene) (PDHN) by introducing bulky alkyl side chains was reported. Poly(2,6-dialkoxy-1,5-naphthylene)s (PDANs) were prepared...
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Article
Investigation of polycyanurate/benzoxazine curing system
In this study, we investigated the curing system between polycyanurate and benzoxazine derivatives which could be a useful system for producing low-k thermoset materials. This curing reaction contains the fol...
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Article
Recent progress in thermally stable and photosensitive polymers
Thermally stable and photosensitive polymers (TSPSPs), such as photosensitive polyimides (PSPIs) and polybenzoxazoles (PSPBOs), have been widely developed in recent years for their applications in electronic p...
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Article
Enhancement of Salt Rejection and Water Flux by Crosslinking-Induced Microstructure Change of N-substituted Polybenzimidazole Membranes
Crosslinked or non-crosslinked ultrathin semipermeable membranes based on the N-butylated and N-butylsulfonated polybenzimidazole (BPBI and BSPBI) were successfully prepared by spin-coating method. Structural cha...
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Article
Synthesis of 1,3,4-thiadiazole-based donor–acceptor alternating copolymers for polymer solar cells with high open-circuit voltage
We report the synthesis and characterization of novel 1,3,4-thiadiazole (TDz)-containing π-conjugated alternating copolymers with donor units, such as thiophene (PTDzTh), selenophene (PTDzSe), thieno[3,4-b]thioph...
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Article
Synthesis of poly(arylene ether sulfone): 18-Crown-6 catalyzed phase-transfer polycondensation of bisphenol A with 4,4′-dichlorodiphenyl sulfone
We have demonstrated that the phase-transfer polycondensation of bisphenol A with 4,4'-dichlorodiphenyl sulfone catalyzed by 18-crown-6 provided poly(arylene ether sulfone)s with high molecular weights even in...
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Chapter
Block Copolymers Containing Polythiophene Segments
Much attention has recently been paid to block copolymers (BCPs) containing π-conjugated stiff-rod segments, because of their many potential optical and electronic applications, including batteries, capacitors...
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Article
Precision synthesis of tailor-made polythiophene-based materials and their application to organic solar cells
Polymer-based solar cells (PSCs) have been promising candidates as renewable energy resources, having multiple advantages of flexible, low-cost and large-area processing for their mass production. Among them, ...
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Article
Synthesis of hyperbranched polymers with controlled degree of branching
Hyperbranched polymers (HBPs) have attracted considerable attention during the past decade because of their intrinsic globular structures and unique properties, such as low viscosity, high solubility and a hig...
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Article
Synthesis of block copolymers consisting of poly(3-hexylthiophene) and polystyrene segments through ionic interaction and their self-assembly behavior
A series of well-defined aniline-chain-end-functionalized regioregular poly(3-hexylthiophene)s (P3HT-NH2) have been successfully synthesized on the basis of Grignard metathesis polymerization. The molecular weigh...
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Article
A Negative-Type Photosensitive Poly(3-hexylthiophene) with Cross-Linker and Photoacid Generator
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Article
Synthesis of High Refractive Index Poly(thioether sulfone)s With High Abbe's Number Derived from 2,5-is(sulfanylmethyl)-l,4-dithiane
Two kinds of new thermoplastic poly(thioether sulfone)s (PESs) with high refractive indices and high Abbe's numbers have been developed by the simultaneous introduction of sulfide, sulfone, and alicyclic units...
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Article
Influence of Polymer Structure in Sulfonated Block Copoly(ether sulfone) Membranes for Fuel Cell Application
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Article
Synthesis of Aramids by Polycondensation of Aromatic Dicarboxylic Acids with Aromatic Diamines Containing Ether Linkages
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Article
Direct Patterning of Poly(ether ether sulfone) Using a Cross-linker and a Photoacid Generator
A negative-type photosensitive poly(ether ether sulfone) (PSPEES) based on a commercially available engineering plastic poly(oxybiphenyl-4,4′-diyloxy-1,4-phenylenesulfonyl-1,4-phenylene) (PEES), a cross-linker...
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Article
Synthesis of Highly Refractive and Transparent Polyimides Derived from 4,4′-[p-Sulfonylbis(phenylenesulfanyl)]diphthalic Anhydride and Various Sulfur-containing Aromatic Diamines
Highly refractive and transparent polyimides (PIs) have been developed. The PIs were prepared from a para-substituted sulfonyl-bridged dianhydride, 4,4′-[p-sulfonylbis(phenylenesulfanyl)]diphthalic anhydride (p-D...
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Article
Recent Progress of Photosensitive Polyimides
Photosensitive polyimides (PSPIs) have been attracting great attention as insulating materials in microelectronic industry, and can be directly patterned to simplify processing steps. This article reviews rece...
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Article
Synthesis of Hyperbranched Polymer with Degree of Branching of Approximately 100% by Polycondensation of 2-(4-Phenoxyphenoxy)fluorenone
An approximately 100% branched hyperbranched polymer was successfully prepared using 2-(4-phenoxyphenoxy)fluorenone as a monomer in an acidic medium. The kinetics of the model reaction between 9-fluorenone and...
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Article
Mechanical and Dielectric Properties of a New Polymer Blend Composed of 1,2-Bis(vinylphenyl)ethane and Thermosetting Poly(phenylene ether) Copolymer Obtained from 2,6-Dimethylphenol and 2-Allyl-6-methylphenol
A novel low-dielectric-loss thermosetting material was developed by blending poly(2-allyl-6-methylphenol-co-2,6-dimethylphenol) (Allyl-PPE) with 1,2-bis(vinylphenyl)ethane (BVPE). BVPE could be used effectivel...
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Article
Synthesis of Poly(N-fluoroalkyl benzamide) with Controlled Molecular Weight and Polydispersity Index
Poly(N-fluoroalkyl benzamide) (4) with a controlled molecular weight (MW) and a polydispersity index (PDI) was prepared by chain-growth polycondensation of 4-(N-1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctylamino) ...
