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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1021/la400985n
|2 doi
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|a eng
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| 100 |
1 |
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|a Wang, Yu-Ning
|e verfasserin
|4 aut
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|a Seed-mediated growth of ultralong gold nanorods and nanowires with a wide range of length tunability
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 05.03.2014
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|a Date Revised 20.08.2013
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a This study reports a systematic approach to synthesize ultralong gold nanorods and nanowires using a seed-mediated growth approach. In the first series, the effect of growth solution pH on the lengths of nanorods prepared was investigated. Interestingly, although shorter rods (230-310 nm) were produced in a basic solution environment than in an acidic condition (330-410 nm), the nanorod yield is greatly improved with relatively few nanoplate byproducts formed. Nanorod growth proceeds quickly in a basic solution as evidenced by the fast solution color changes. By adjusting several experimental parameters with the aim to elongate the nanorod length in a tunable fashion, gold nanorods and nanowires with average lengths from 580 to 2850 nm can be synthesized by progressively increasing the HNO3 concentration in the final growth solution. Nanowire growth in a highly acidic solution is slower, and a substantially longer time is needed to reach long lengths. Further extension of the nanowire length can be achieved simply by reducing the volume of second growth solution transferred to the final growth solution. Nanorods and nanowires with lengths spanning from 700 nm to 4.5 μm were prepared in this series of experimental conditions. The longest nanowires can reach a length of up to 6 μm. The nanowires still maintain thin average diameters of 33-53 nm. The ability to make gold nanorods and nanowires over this exceptionally wide and useful length range is exciting because applications and demonstrations using ultralong gold nanorods and nanowires of most suitable lengths are now possible
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|a Journal Article
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1 |
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|a Wei, Wen-Tsing
|e verfasserin
|4 aut
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|a Yang, Chih-Wen
|e verfasserin
|4 aut
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| 700 |
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|a Huang, Michael H
|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), 33 vom: 20. Aug., Seite 10491-7
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|x 1520-5827
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|g volume:29
|g year:2013
|g number:33
|g day:20
|g month:08
|g pages:10491-7
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|u http://dx.doi.org/10.1021/la400985n
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