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  A one-step method to coat polystyrene particles with an organo-silica shell and their functionalization

Deng, T. S., Bongard, H.-J., & Marlow, F. (2015). A one-step method to coat polystyrene particles with an organo-silica shell and their functionalization. Materials Chemistry and Physics, 162, 548-554. doi:10.1016/j.matchemphys.2015.06.027.

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 Creators:
Deng, Tian Song1, Author           
Bongard, Hans-Josef2, Author           
Marlow, Frank1, 3, Author           
Affiliations:
1Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445612              
2Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              
3Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 47057 Duisburg, Germany, ou_persistent22              

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Free keywords: Coatings; Optical materials; Thin films; Sol–gel growth; Surface properties
 Abstract: A facile method of coating polystyrene (PS) particles with organo-silica and their functionalization was presented. By adding the organo-silane precursor into PS aqueous solution in presence of ammonia, an organo-silica shell could be coated on PS particles directly. This method has several characteristics. First, only one process, one precursor and one solvent were used. Second, the organic groups could be varied from methyl, propyl, vinyl, to mercaptopropyl. The third is the tunable shell thickness with a high monodispersity. The organo-silica shells are further functionalized. The PS@vinyl-SiO2 particles were used to assemble colloidal crystals, and further modified with bromine, resulting in tunable photonic band gaps. PS@mercaptopropyl-SiO2 particles allow the encapsulation of Au nanoparticles. The resulting 2.2 nm Au particles were stable at 550 °C and well-distributed in the whole SiO2 shell with a loading up to 20 wt%.

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Language(s): eng - English
 Dates: 2015-06-212015-07-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.matchemphys.2015.06.027
 Degree: -

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Title: Materials Chemistry and Physics
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Elsevier
Pages: - Volume / Issue: 162 Sequence Number: - Start / End Page: 548 - 554 Identifier: ISSN: 0254-0584
CoNE: https://pure.mpg.de/cone/journals/resource/954928577762