Effects of diazonaphthoquinone groups on photosensitive coating

Relatively scant work was related to polynaphthalene (PN) and its derivatives because of the unique nonlinear optical properties which make PN and its derivatives owning potential applications in various domains. According to relevant studies, the pursuit for the synthesis of high quality PN films is a great challenge for the applications of PN. To achieve high quality polymer films, three bridged naphthalene derivatives were designed, and finally two crosslinked PN exhibiting space network were electrosynthesized, respectively, by direct anodic oxidation from 1,6-bis(naphthalen-2-yloxy)hexane and 1,4-bis((naphthalen-2-yloxy)methyl)benzene in mixed electrolyte of dichloromethane containing boron trifluoride diethyl etherate. Furthermore, as-formed conducting films were characterized by cyclic voltammetry, spectroscopic analysis, thermal analysis, and scanning electron microscopy. And the series of characterizations indicated that films hold high stability and good blue-light-emitting property. Meanwhile, these polymer films were smooth, shiny, and flexible easily being processed into various shapes by conventional mechanical methods. Consequently, these high quality PN films will facilitate their potential applications as blue-light-emitting materials in organic light-emitting diode. Because di(naphthalen-2-yl) terephthalate was difficult to electropolymerize, the effects of bridged spacers to polymerization were also discussed.

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Novel poly‐bridged‐naphthalene with blue‐light‐emitting property via electropolymerization

Zhu

Yue

et al. 2011

J of Applied Polymer Sci

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Crosslinked electrolytes based on poly(butoxymethylenenorbornene) for proton exchange membrane

Zhang

et al. 2011

J of Applied Polymer Sci

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ABSTRACT:The poly(butoxymethylenenorbornene-conorbornenemethyl acetate) (PBN/NA) were successfully synthesized via the vinyl addition copolymerization of 2-butoxymethylene norbornene (BN) and norbornene-2-methyl acetate (NA). The poly(butoxymethylenenorbornene-co-norbornenemethanol) (PBN/NOH) was obtained by the de-esterification of PBN/NA. After doping with 4,5-imidazole dicarboxylic acid (IDA) and phosphoric acid (H 3 PO 4 ), the proton exchange membranes with crosslinked structure were obtained and the corresponding morphology, water uptake, proton conductivity, methanol permeability, thermal stability, as well as tensile properties were investigated. The results indicate that the crosslinked membranes showed higher proton conductivity at higher temperatures and lower methanol permeability after incorporation of more content of IDA and H 3 PO 4 . The PNIH membranes showed lower tensile strength, elongation at break as well as the elastic modulus than pristine PBN/ NOH.

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Covalent‐ionically crosslinked sulfonated poly(arylene ether sulfone)s bearing quinoxaline crosslinkages as proton exchange membranes

Chen

2012

J of Applied Polymer Sci

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Crosslinkable sulfonated poly(arylene ether sulfone)s (SPAESs) were synthesized by copolymerization of 4,4 0 -biphenol with 2,6-difluorobenzil, 4,4 0 -difluorodiphenyl sulfone, and 3,3 0 -disulfonated-4,4 0 -difluorodiphenyl sulfone disodium salt. The corresponding covalent-ionically crosslinked SPAESs were prepared via the cyclocondensation reaction of benzil moieties in polymer chain with 3,3 0 -diaminobenzidine. The crosslinking significantly improved the membrane performance, that is, the crosslinked membranes had the lower membrane dimensional swelling, lower methanol permeability, and higher oxidative stability than the corresponding precursor membranes, with keeping the reasonably high proton conductivity. The crosslinked membrane (CS5) with measured ion exchange capacity of 1.47 meq g À1 showed a reasonably high proton conductivity of 112 mS cm À1 with water uptake of 42 wt % at 80 C, and exhibited a low methanol permeability of 2.

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Effects of diazonaphthoquinone groups on photosensitive coating

Cited by 10 publications

References 10 publications

Novel poly‐bridged‐naphthalene with blue‐light‐emitting property via electropolymerization

Novel poly‐bridged‐naphthalene with blue‐light‐emitting property via electropolymerization

Crosslinked electrolytes based on poly(butoxymethylenenorbornene) for proton exchange membrane

Covalent‐ionically crosslinked sulfonated poly(arylene ether sulfone)s bearing quinoxaline crosslinkages as proton exchange membranes

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