Asymmetric self-assembly of oppositely charged composite microgels and gold nanoparticles
(2012) In Soft Matter 8(5). p.1648-1656- Abstract
- The electrostatically driven self-assembly of oppositely charged gold nanoparticles (Au NPs) and polystyrene/poly(N-isopropylacrylamide) (PS/PNIPAm) core-shell microgels (CSMs) has been investigated. The co-assembly was accomplished by addition of smaller Au NPs to CSMs in dilute conditions up to a number ratio of about 1 : 1, when the suspension is destabilized. A combination of different techniques (i.e. turbidimetric titration, electrophoretic mobility, UV-visible spectroscopy, dynamic light scattering and microscopy techniques) were used to investigate the association between the two particles and the stability of the different mixtures. Hereby we demonstrate that the size ratio between the two particles (about 4 to 1) and the... (More)
- The electrostatically driven self-assembly of oppositely charged gold nanoparticles (Au NPs) and polystyrene/poly(N-isopropylacrylamide) (PS/PNIPAm) core-shell microgels (CSMs) has been investigated. The co-assembly was accomplished by addition of smaller Au NPs to CSMs in dilute conditions up to a number ratio of about 1 : 1, when the suspension is destabilized. A combination of different techniques (i.e. turbidimetric titration, electrophoretic mobility, UV-visible spectroscopy, dynamic light scattering and microscopy techniques) were used to investigate the association between the two particles and the stability of the different mixtures. Hereby we demonstrate that the size ratio between the two particles (about 4 to 1) and the asymmetric character of the association result in the formation of electrostatic hybrid complexes, analogous to dipolar colloidal molecules, which further rearrange into finite sized clusters for number ratios N(AuNPs)/N(CSMs) < 1. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2362442
- author
- Crassous, Jerome J. ; Millard, Pierre-Eric ; Mihut, Adriana M. ; Polzer, Frank ; Ballauff, Matthias LU and Schurtenberger, Peter
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soft Matter
- volume
- 8
- issue
- 5
- pages
- 1648 - 1656
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000298990600049
- scopus:84855715713
- ISSN
- 1744-6848
- DOI
- 10.1039/c1sm06828h
- language
- English
- LU publication?
- yes
- id
- ee495add-f08d-461a-9e5f-d9b3b7e30984 (old id 2362442)
- date added to LUP
- 2016-04-01 14:53:20
- date last changed
- 2022-04-22 05:47:06
@article{ee495add-f08d-461a-9e5f-d9b3b7e30984, abstract = {{The electrostatically driven self-assembly of oppositely charged gold nanoparticles (Au NPs) and polystyrene/poly(N-isopropylacrylamide) (PS/PNIPAm) core-shell microgels (CSMs) has been investigated. The co-assembly was accomplished by addition of smaller Au NPs to CSMs in dilute conditions up to a number ratio of about 1 : 1, when the suspension is destabilized. A combination of different techniques (i.e. turbidimetric titration, electrophoretic mobility, UV-visible spectroscopy, dynamic light scattering and microscopy techniques) were used to investigate the association between the two particles and the stability of the different mixtures. Hereby we demonstrate that the size ratio between the two particles (about 4 to 1) and the asymmetric character of the association result in the formation of electrostatic hybrid complexes, analogous to dipolar colloidal molecules, which further rearrange into finite sized clusters for number ratios N(AuNPs)/N(CSMs) < 1.}}, author = {{Crassous, Jerome J. and Millard, Pierre-Eric and Mihut, Adriana M. and Polzer, Frank and Ballauff, Matthias and Schurtenberger, Peter}}, issn = {{1744-6848}}, language = {{eng}}, number = {{5}}, pages = {{1648--1656}}, publisher = {{Royal Society of Chemistry}}, series = {{Soft Matter}}, title = {{Asymmetric self-assembly of oppositely charged composite microgels and gold nanoparticles}}, url = {{http://dx.doi.org/10.1039/c1sm06828h}}, doi = {{10.1039/c1sm06828h}}, volume = {{8}}, year = {{2012}}, }