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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/la504672x
|2 doi
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|a pubmed24n0817.xml
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Yan, Nan
|e verfasserin
|4 aut
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| 245 |
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|a Templated self-assembly of block copolymers and morphology transformation driven by the Rayleigh instability
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 03.08.2015
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|a Date Revised 10.02.2015
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In the current study, we investigate the self-assembly of polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) confined in the nanopores of the anodic aluminum oxide (AAO) template and the subsequent morphology transformation induced by the Rayleigh instability. PS-b-P4VP nanotubes and nanorods with various internal nanostructures are fabricated by wetting the AAO template with PS-b-P4VP/chloroform solution, and then followed by solvent evaporation. After the removal of AAO template by potassium hydroxide solution, several different solvents (chloroform, toluene, and N,N-dimethylformamide) with different qualities are used to swell and anneal those nanotubes and nanorods suspended in aqueous media. Morphology transformation from nanostructured PS-b-P4VP nanotubes or nanorods to ordered nanospheres is observed by annealing upon chloroform and toluene while the morphology remains unchanged upon N,N-dimethylformamide annealing, indicating that solvent quality is a key factor in tuning the morphology and internal structures. Kinetics study and theoretical analysis for the morphology transition from two-dimensional (2D) block copolymer (BCP) nanotubes and nanorods to three-dimensional (3D) BCP nanospheres are further performed. From the morphological evolution and the quantitative calculation, it is confirmed that this transition is induced by the Rayleigh instability. This study provides a simple but promising method, that is, solvent annealing method, for the fabrication of BCP nanospheres with ordered internal nanostructures, which may have great application in drug delivery and other nanotechnology
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|a Journal Article
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1 |
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|a Sheng, Yuping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Hongxia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Yutian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jiang, Wei
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 5 vom: 10. Feb., Seite 1660-9
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|x 1520-5827
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| 773 |
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|g volume:31
|g year:2015
|g number:5
|g day:10
|g month:02
|g pages:1660-9
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| 856 |
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|u http://dx.doi.org/10.1021/la504672x
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