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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1021/la401448e
|2 doi
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|a pubmed24n0761.xml
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|a DE-627
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|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Boltoeva, Maria Yu
|e verfasserin
|4 aut
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|a Electric-field alignment of chitin nanorod-siloxane oligomer reactive suspensions
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|c 2013
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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
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|2 rdacarrier
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|a Date Completed 22.01.2014
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|a Date Revised 02.07.2013
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Uniaxially anisotropic chitin-silica nanocomposite solids have been obtained thanks to the electric field-induced macroscopic alignment of liquid-crystalline reactive cosuspensions. We demonstrate how chitin nanorods (260 nm long, 23 nm thick) can be aligned upon the application of an alternating current (ac) electric field, and within water-ethanol suspensions containing reactive siloxane oligomers (D(h) ∼ 3 nm). The alignment at the millimeter length scale is monitored by in situ small-angle X-ray scattering (SAXS) and polarized light optical microscopy. The composition and state (isotropic, chiral nematic) of the cosuspensions are proven to be determining factors. For nematic phases, the alignment is preserved when the electric field is switched off. Further solvent evaporation induces sol-gel transition, and uniaxially anisotropic chitin-silica nanocomposites are formed after complete drying of the aligned nematic suspensions. Here, the collective response of colloidal mesophases to external electric fields and the subsequent formation of ordered nanocomposite solids would represent a new opportunity for materials design
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|a Journal Article
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|a Dozov, Ivan
|e verfasserin
|4 aut
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1 |
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|a Davidson, Patrick
|e verfasserin
|4 aut
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1 |
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|a Antonova, Krassa
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cardoso, Laura
|e verfasserin
|4 aut
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| 700 |
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|a Alonso, Bruno
|e verfasserin
|4 aut
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|a Belamie, Emmanuel
|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 29(2013), 26 vom: 02. Juli, Seite 8208-12
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:29
|g year:2013
|g number:26
|g day:02
|g month:07
|g pages:8208-12
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|u http://dx.doi.org/10.1021/la401448e
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