Emulsions-directed assembly of gold nanoparticles to molecularly-linked and size-controlled spherical aggregates
(2010) In Journal of Colloid and Interface Science 350(1). p.368-372- Abstract
- Aggregation of gold nanoparticles into soluble spherical assemblies using bi-functional ligands i.e., dithiols has recently been demonstrated but with limited control over the size of such assemblies. Herein, we report a new approach to further control the size of water dispersible spherical assemblies by confining gold nanoparticles in tiny oil droplets in water (oil-in-water emulsions) followed by their cross-linking with alkanedithiols. By controlling the size of the oil droplets and the concentration of nanoparticles, the size of spherical aggregates can be controlled from 20 to 400 nm. Cryo-TEM micrographs confirm the formation of covalently-linked soluble spherical nanoparticle assemblies within the oil emulsions in water. Such... (More)
- Aggregation of gold nanoparticles into soluble spherical assemblies using bi-functional ligands i.e., dithiols has recently been demonstrated but with limited control over the size of such assemblies. Herein, we report a new approach to further control the size of water dispersible spherical assemblies by confining gold nanoparticles in tiny oil droplets in water (oil-in-water emulsions) followed by their cross-linking with alkanedithiols. By controlling the size of the oil droplets and the concentration of nanoparticles, the size of spherical aggregates can be controlled from 20 to 400 nm. Cryo-TEM micrographs confirm the formation of covalently-linked soluble spherical nanoparticle assemblies within the oil emulsions in water. Such size-controlled nanoparticle assemblies may have several potential applications including those in gas sensors, controlled delivery, and optical coatings. (C) 2010 Elsevier Inc. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1673694
- author
- Hussain, Irshad ; Zhang, Haifei ; Brust, Mathias ; Barauskas, Justas LU and Cooper, Andrew I.
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Gold nanoparticles, Emulsions-directed assembly, Porous nanospheres
- in
- Journal of Colloid and Interface Science
- volume
- 350
- issue
- 1
- pages
- 368 - 372
- publisher
- Elsevier
- external identifiers
-
- wos:000281048300052
- scopus:77955320217
- pmid:20609445
- ISSN
- 1095-7103
- DOI
- 10.1016/j.jcis.2010.06.016
- language
- English
- LU publication?
- yes
- id
- 175891f9-aac6-4743-989b-8308919efefa (old id 1673694)
- date added to LUP
- 2016-04-01 11:02:49
- date last changed
- 2022-01-26 04:59:28
@article{175891f9-aac6-4743-989b-8308919efefa,
abstract = {{Aggregation of gold nanoparticles into soluble spherical assemblies using bi-functional ligands i.e., dithiols has recently been demonstrated but with limited control over the size of such assemblies. Herein, we report a new approach to further control the size of water dispersible spherical assemblies by confining gold nanoparticles in tiny oil droplets in water (oil-in-water emulsions) followed by their cross-linking with alkanedithiols. By controlling the size of the oil droplets and the concentration of nanoparticles, the size of spherical aggregates can be controlled from 20 to 400 nm. Cryo-TEM micrographs confirm the formation of covalently-linked soluble spherical nanoparticle assemblies within the oil emulsions in water. Such size-controlled nanoparticle assemblies may have several potential applications including those in gas sensors, controlled delivery, and optical coatings. (C) 2010 Elsevier Inc. All rights reserved.}},
author = {{Hussain, Irshad and Zhang, Haifei and Brust, Mathias and Barauskas, Justas and Cooper, Andrew I.}},
issn = {{1095-7103}},
keywords = {{Gold nanoparticles; Emulsions-directed assembly; Porous nanospheres}},
language = {{eng}},
number = {{1}},
pages = {{368--372}},
publisher = {{Elsevier}},
series = {{Journal of Colloid and Interface Science}},
title = {{Emulsions-directed assembly of gold nanoparticles to molecularly-linked and size-controlled spherical aggregates}},
url = {{http://dx.doi.org/10.1016/j.jcis.2010.06.016}},
doi = {{10.1016/j.jcis.2010.06.016}},
volume = {{350}},
year = {{2010}},
}