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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5b02654
|2 doi
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|a pubmed24n0846.xml
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|a (DE-627)NLM253966493
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|a (NLM)26496244
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Rong, Yuanyang
|e verfasserin
|4 aut
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|a Intrinsically Microporous Polymer Retains Porosity in Vacuum Thermolysis to Electroactive Heterocarbon
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 10.02.2016
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|a Date Revised 10.11.2015
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Vacuum carbonization of organic precursors usually causes considerable structural damage and collapse of morphological features. However, for a polymer with intrinsic microporosity (PIM-EA-TB with a Brunauer-Emmet-Teller (BET) surface area of 1027 m(2)g(-1)), it is shown here that the rigidity of the molecular backbone is retained even during 500 °C vacuum carbonization, yielding a novel type of microporous heterocarbon (either as powder or as thin film membrane) with properties between those of a conducting polymer and those of a carbon. After carbonization, the scanning electron microscopy (SEM) morphology and the small-angle X-ray scattering (SAXS) Guinier radius remain largely unchanged as does the cumulative pore volume. However, the BET surface area is decreased to 242 m(2)g(-1), but microporosity is considerably increased. The new material is shown to exhibit noticeable electrochemical features including two pH-dependent capacitance domains switching from ca. 33 Fg(-1) (when oxidized) to ca. 147 Fg(-1) (when reduced), a low electron transfer reactivity toward oxygen and hydrogen peroxide, and a four-point-probe resistivity (dry) of approximately 40 MΩ/square for a 1-2 μm thick film
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|a Journal Article
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|a He, Daping
|e verfasserin
|4 aut
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|a Sanchez-Fernandez, Adrian
|e verfasserin
|4 aut
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|a Evans, Craig
|e verfasserin
|4 aut
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|a Edler, Karen J
|e verfasserin
|4 aut
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|a Malpass-Evans, Richard
|e verfasserin
|4 aut
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|a Carta, Mariolino
|e verfasserin
|4 aut
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|a McKeown, Neil B
|e verfasserin
|4 aut
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|a Clarke, Tomos J
|e verfasserin
|4 aut
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|a Taylor, Stuart H
|e verfasserin
|4 aut
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|a Wain, Andrew J
|e verfasserin
|4 aut
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|a Mitchels, John M
|e verfasserin
|4 aut
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|a Marken, Frank
|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 1992
|g 31(2015), 44 vom: 10. Nov., Seite 12300-6
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:31
|g year:2015
|g number:44
|g day:10
|g month:11
|g pages:12300-6
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|u http://dx.doi.org/10.1021/acs.langmuir.5b02654
|3 Volltext
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