Preparation of structurally colored films assembled by using polystyrene@silica, air@silica and air@carbon@silica core–shell nanoparticles with enhanced color visibility

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 37535-37543 ◽  
Author(s):  
Fen Wang ◽  
Xin Zhang ◽  
Jianfeng Zhu ◽  
Ying Lin
Keyword(s):  
Core Shell ◽  
Shell Nanoparticles ◽  
Stöber Method ◽  
Silica Core ◽  
Modified Stöber Method ◽  
Core Shell Nanoparticles

Polystyrene@silica (PS@SiO2) core–shell nanospheres were synthesized using a surfactant free method followed by a modified Stöber method in the research reported in this paper.

Responsive P(NIPAM-co-AA) Particle-Functionalized Magnetic Microspheres

2014 ◽  
Vol 67 (1) ◽  
pp. 134 ◽  
Author(s):  
Yiheng Wang ◽  
Mengge Xia ◽  
Yongtao Wu ◽  
Meifang Zhu
Keyword(s):  
Magnetic Microspheres ◽  
Core Shell ◽  
The Novel ◽  
Shell Nanoparticles ◽  
Stöber Method ◽  
Preparation Conditions ◽  
Amidation Reaction ◽  
Modified Stöber Method ◽  
Core Shell Nanoparticles ◽  
Seed Emulsion Polymerization

Functionalized magnetic microspheres were prepared by anchoring cross-linked core–shell poly(N-isopropylacrylamide-co-acrylic acid) (P(NIPAM-co-AA)) nanoparticles onto silica-coated magnetic microspheres (Fe3O4@SiO2). First, the smaller polystyrene/P(NIPAM-co-AA) core–shell nanoparticles were synthesized through seed emulsion polymerization and adhered to the surface of amino-modified Fe3O4@SiO2 micorspheres, which were made using the modified Stöber method through electrostatic interaction under appropriate preparation conditions. An amidation reaction between the carboxylic and amino groups on the respective surfaces was then catalyzed. Finally, the novel architecture magnetic microspheres with multiresponsive functionalities were obtained, and their polymerization conditions, environmental sensitivity, and magnetic properties were discussed and optimized. The superparamagnetism and temperature/pH dual responsivity and excellent dispersibility of the P(NIPAM-co-AA) functionalized magnetic microspheres provide them with high potential to be used in the fields of controlled drug delivery, bioseparation, and catalysis.

scholarly journals The phase diagram of colloidal silica–PNIPAm core–shell nanogels

Soft Matter ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 466-475 ◽  
Author(s):  
Lara Frenzel ◽  
Felix Lehmkühler ◽  
Michael Koof ◽  
Irina Lokteva ◽  
Gerhard Grübel
Keyword(s):  
Phase Diagram ◽  
Colloidal Silica ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Aqueous Dispersions ◽  
Structure And Dynamics ◽  
Silica Core ◽  
Core Shell Nanoparticles

We study the structure and dynamics of aqueous dispersions of densely packed core–shell nanoparticles composed of a silica core and a poly(N-isoproylacrylamide) (PNIPAm) shell as a function of temperature and concentration.

Synthesis of magnetite–silica core–shell nanoparticles via direct silicon oxidation

2014 ◽  
Vol 432 ◽  
pp. 43-46 ◽  
Author(s):  
Shuxian Wang ◽  
Jing Tang ◽  
Hongfu Zhao ◽  
Jiaqi Wan ◽  
Kezheng Chen
Keyword(s):  
Core Shell ◽  
Silicon Oxidation ◽  
Shell Nanoparticles ◽  
Silica Core ◽  
Core Shell Nanoparticles

Highly luminescent yttria–silica core–shell nanoparticles by the sacrificial polymer shell method

2013 ◽  
Vol 39 (4) ◽  
pp. 4513-4521 ◽  
Author(s):  
Mehdi Ghahari ◽  
Paola Fabbri ◽  
Francesco Pilati ◽  
Luca Pasquali ◽  
Monica Montecchi ◽  
...  
Keyword(s):  
Core Shell ◽  
Polymer Shell ◽  
Shell Nanoparticles ◽  
Silica Core ◽  
Core Shell Nanoparticles
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