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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la202320k
|2 doi
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|a eng
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|a Xie, Yong
|e verfasserin
|4 aut
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|a Self-assembly of gold nanorods into symmetric superlattices directed by OH-terminated hexa(ethylene glycol) alkanethiol
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|c 2011
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 13.01.2012
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|a Date Revised 01.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2011 American Chemical Society
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|a The self-assembly of anisotropic gold nanorods (GNRs) into ordered phases remains a challenge. Herein, we demonstrated the fabrication of symmetric circular- or semicircular-like self-assembled superlattices composed of multilayers of standing GNRs by fine-tuning the repulsive interactions among GNRs. The repulsive force is tailored from electrostatic interaction to steric force by replacing the surface coating of cetyltrimethylammonium bromide (CTAB) (ζ potential of 20-50 mV) with an OH-terminated hexa(ethylene glycol) alkanethiol (here termed as EG(6)OH, ζ potential of -10 mV). The assembly mechanism is discussed via theoretical analyses of the major interactions, and an effective balance between the repulsive steric and attractive depletion interactions is the main driving force for the self-assembly. The real-time observations of solution assembly (UV-vis-NIR absorption spectroscopy) supports the mechanism that we suggested. The superlattices obtained here not only enrich the categories of the self-assembled structures but more importantly deepen the insight of the self-assembly process and pave the way for various potential applications
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Hydroxides
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|a Sulfhydryl Compounds
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|a Polyethylene Glycols
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|a 3WJQ0SDW1A
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|a Gold
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|a hydroxide ion
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|a Guo, Shengming
|e verfasserin
|4 aut
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|a Ji, Yinglu
|e verfasserin
|4 aut
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|a Guo, Chuanfei
|e verfasserin
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|a Liu, Xinfeng
|e verfasserin
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|a Chen, Ziyu
|e verfasserin
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|a Wu, Xiaochun
|e verfasserin
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|a Liu, Qian
|e verfasserin
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 18 vom: 20. Sept., Seite 11394-400
|w (DE-627)NLM098181009
|x 1520-5827
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|g volume:27
|g year:2011
|g number:18
|g day:20
|g month:09
|g pages:11394-400
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|u http://dx.doi.org/10.1021/la202320k
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