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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.8b04079
|2 doi
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|a pubmed24n0978.xml
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|a (NLM)30744379
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Tsuksamoto, Mayu
|e verfasserin
|4 aut
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|a Biomimetic Polyelectrolytes Based on Polymer Nanosheet Films and Their Proton Conduction Mechanism
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 20.11.2019
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|a published: Print-Electronic
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|a ErratumIn: Langmuir. 2019 Dec 10;35(49):16400. - PMID 31769693
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|a Citation Status PubMed-not-MEDLINE
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|a We report a biomimetic polyelectrolyte based on amphiphilic polymer nanosheet multilayer films. Copolymers of poly( N-dodecylacrylamide- co-vinylphosphonic acid) [p(DDA/VPA)] form a uniform monolayer at the air-water interface. By depositing such monolayers onto solid substrates using the Langmuir-Blodgett (LB) method, multilayer lamellae films with a structure similar to a bilayer membrane were fabricated. The proton conductivity at the hydrophilic interlayer of the lamellar multilayer films was studied by impedance spectroscopy under temperature- and humidity-controlled conditions. At 60 °C and 98% relative humidity (RH), the conductivity increased with increasing mole fraction of VPA ( n) up to 3.2 × 10-2 S cm-1 for n = 0.41. For a film with n = 0.45, the conductivity decreased to 2.2 × 10-2 S cm-1 despite the increase of proton sources. The reason for this decrease was evaluated by studying the effect of the distance between the VPAs ( lVPA) on the proton conductivity as well as their activation energy. We propose that for n = 0.41, lVPA is the optimal distance not only to form an efficient two-dimensional (2D) hydrogen bonding network but also to reorient water and VPA. For n = 0.45, on the other hand, the lVPA was too close for a reorientation. Therefore, we concluded that there should be an optimal distance to obtain high proton conductivity at the hydrophilic interlayer of such multilayer films
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|a Journal Article
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|a Ebata, Kazuki
|e verfasserin
|4 aut
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|a Sakiyama, Hiroshi
|e verfasserin
|4 aut
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| 700 |
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|a Yamamoto, Shunsuke
|e verfasserin
|4 aut
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|a Mitsuishi, Masaya
|e verfasserin
|4 aut
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|a Miyashita, Tokuji
|e verfasserin
|4 aut
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| 700 |
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|a Matsui, Jun
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 35(2019), 9 vom: 05. März, Seite 3302-3307
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:35
|g year:2019
|g number:9
|g day:05
|g month:03
|g pages:3302-3307
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|u http://dx.doi.org/10.1021/acs.langmuir.8b04079
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