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Anisotropic mesoporous silica/microgel core-shell responsive particles

Schmitt, Julien LU ; Hartwig, Caroline ; Crassous, Jérôme J. LU ; Mihut, Adriana M. LU ; Schurtenberger, Peter LU orcid and Alfredsson, Viveka LU (2020) In RSC Advances 10(42). p.25393-25401
Abstract

Hybrid anisotropic microgels were synthesised using mesoporous silica as core particles. By finely controlling the synthesis conditions, the latter can be obtained with different shapes such as platelets, primary particles or rods. Using the core particles as seeds for precipitation polymerisation, a crosslinked poly(N-isopropylacrylamide) (PNIPAM) microgel shell could be grown at the surface, conferring additional thermo-responsive properties. The different particles were characterised using scattering and imaging techniques. Small angle X-ray scattering (SAXS) was employed to identify the shape and porous organisation of the core particles and dynamic light scattering (DLS) to determine the swelling behaviour of the hybrid microgels.... (More)

Hybrid anisotropic microgels were synthesised using mesoporous silica as core particles. By finely controlling the synthesis conditions, the latter can be obtained with different shapes such as platelets, primary particles or rods. Using the core particles as seeds for precipitation polymerisation, a crosslinked poly(N-isopropylacrylamide) (PNIPAM) microgel shell could be grown at the surface, conferring additional thermo-responsive properties. The different particles were characterised using scattering and imaging techniques. Small angle X-ray scattering (SAXS) was employed to identify the shape and porous organisation of the core particles and dynamic light scattering (DLS) to determine the swelling behaviour of the hybrid microgels. In addition, cryogenic transmission electron microscopy (cryo-TEM) imaging of the hybrids confirms the different morphologies as well as the presence of the microgel network and the core-shell conformation. Finally, the response of the particles to an alternating electric field is demonstrated for hybrid rod-shaped microgels in situ using confocal laser scanning microscopy (CLSM). This journal is

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
RSC Advances
volume
10
issue
42
pages
9 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85087804458
ISSN
2046-2069
DOI
10.1039/d0ra02278k
language
English
LU publication?
yes
id
f512f8f0-1866-4104-9e0b-365443cddf11
date added to LUP
2020-07-22 09:04:34
date last changed
2023-11-20 08:06:07
@article{f512f8f0-1866-4104-9e0b-365443cddf11,
  abstract     = {{<p>Hybrid anisotropic microgels were synthesised using mesoporous silica as core particles. By finely controlling the synthesis conditions, the latter can be obtained with different shapes such as platelets, primary particles or rods. Using the core particles as seeds for precipitation polymerisation, a crosslinked poly(N-isopropylacrylamide) (PNIPAM) microgel shell could be grown at the surface, conferring additional thermo-responsive properties. The different particles were characterised using scattering and imaging techniques. Small angle X-ray scattering (SAXS) was employed to identify the shape and porous organisation of the core particles and dynamic light scattering (DLS) to determine the swelling behaviour of the hybrid microgels. In addition, cryogenic transmission electron microscopy (cryo-TEM) imaging of the hybrids confirms the different morphologies as well as the presence of the microgel network and the core-shell conformation. Finally, the response of the particles to an alternating electric field is demonstrated for hybrid rod-shaped microgels in situ using confocal laser scanning microscopy (CLSM). This journal is </p>}},
  author       = {{Schmitt, Julien and Hartwig, Caroline and Crassous, Jérôme J. and Mihut, Adriana M. and Schurtenberger, Peter and Alfredsson, Viveka}},
  issn         = {{2046-2069}},
  language     = {{eng}},
  number       = {{42}},
  pages        = {{25393--25401}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{RSC Advances}},
  title        = {{Anisotropic mesoporous silica/microgel core-shell responsive particles}},
  url          = {{http://dx.doi.org/10.1039/d0ra02278k}},
  doi          = {{10.1039/d0ra02278k}},
  volume       = {{10}},
  year         = {{2020}},
}