Browse > Article

Preparation and Characterization of Thermo-Responsive Silica Nanoparticles with Cross-linked PNIPAAm Shell Layers  

Han, Tae-Hwan (Department of Organic Materials and Fiber Engineering, Soongsil University)
Ryu, Kwang-Hee (Department of Organic Materials and Fiber Engineering, Soongsil University)
Kwark, Young-Je (Department of Organic Materials and Fiber Engineering, Soongsil University)
Publication Information
Textile Science and Engineering / v.48, no.2, 2011 , pp. 109-115 More about this Journal
Abstract
In this study, we prepared organic-inorganic hybrid nanoparticies with a core-shell structure using a surface-initiated polymerization technique. Initiators for the atom transfer radical polymerization were anchored onto the surface of silica nanoparticies, and from there N-isopropylacrylamide and methylene bisacrylamide were polymerized to form cross-linked polymeric shell layers. The thickness of the polymer layers was controlled by varying the reaction time. The thermal phase transition of the surface polymer layer was characterized by dynamic light scattering analysis, which showed reversible swelling/deswelling behavior between $25^{\circ}C$ and $40^{\circ}C$. Compared to the silica nanoparticies with linear polymer layers, the swelling/deswelling behavior was of a smaller degree, but it consistently exhibited similar size changes after repeated processes. HF etching of the silica nanoparticies with surface cross-linked polymer layers removed the silica core to render a hollow structure.
Keywords
silica nanoparticles; thermo-responsive; core-shell structure; cross-linked shell layer; hollow nanoparticle;
Citations & Related Records
연도 인용수 순위
  • Reference
1 D. J. Li, X. Sheng, and B. Zhao, "Environmentally Responsive "Hairy" Nanoparticles: Mixed Homopolymer Brushes on Silica Nanoparticles Synthesized by Living Radical Polymerization Techniques", J Am Chem Soc, 2005, 127, 6248-6256.   DOI   ScienceOn
2 J. Shan, J. Chen, M. Nuopponen, and M. Tenhu, "Two Phase Transitions of Poly(N-isopropylacrylamide) Brushes Bound to Gold Nanoparticles", Langmuir, 2004, 20, 4671-4676.   DOI   ScienceOn
3 H. Mori, D. C. Seng, M. F. Zhang, and A. H. E. Muller, "Hybrid Nanoparticles with Hyperbranched Polymer Shells via Self-Condensing Atom Transfer Radical Polymerization from Silica Surfaces", Langmuir, 2002, 18, 3682-3693.   DOI   ScienceOn
4 X. Y. Chen, D. P. Randall, C. Perruchot, J. F. Watts, T. E. Patten, T. von Werne, and S. P. Armes, "Synthesis and Aqueous Solution Properties of Polyelectrolyte-Grafted Silica Particles Prepared by Surface-initiated Atom Transfer Radical Polymerization", J Colloid Interface Sci, 2003, 257, 56-64.   DOI   ScienceOn
5 J. Pyun, S. J. Jia, T. Kowalewski, G. D. Patterson, and K. Matyjaszewski, "Synthesis and Characterization of Organic/ Inorganic Hybrid Nanoparticles: Kinetics of Surface-Initiated Atom Transfer Radical Polymerization and Morphology of Hybrid Nanoparticle Ultrathin Films", Macromolecules, 2003, 36, 5094-5104.   DOI   ScienceOn
6 T. von Werne and T. E. Patten, "Atom Transfer Radical Polymerization from Nanoparticles: A Tool for the Preparation of Well-Defrned Hybrid Nanostructures and for Understanding the Chemistry of Controlled/"Living" Radical Polymerizations from Surfaces", J Am Chem Soc, 2001, 123, 7497-7505.   DOI   ScienceOn
7 C. Perruchot, M. A. Khan, A. Kamitsi, S. P. Armes, T. von Werne, and T. E. Patten, "Synthesis of Well-Defmed, Polymer-Grafted Silica Particles by Aqueous ATRP", Langmuir, 2001, 17, 4479-4481.   DOI   ScienceOn
8 T. Wu, Y. Zhang, X. Wang, and S. Liu, "Fabrication of Hybrid Silica Nanoparticles Densely Grafted with Thermoresponsive Poly(N-isopropylacrylamide) Brushes of Controlled Thickness via Surface-Initiated Atom Transfer Radical Polymerization", Chem Mater, 2008, 20, 101-109.   DOI   ScienceOn
9 G. Carrot, S. Diamanti, M. Manuszak, B. Charleux, and I. P. Vairon, "Atom Transfer Radical Polymerization of n-Butyl Acrylate from Silica Nanoparticles", J Polym Sci, Part A: Polym Chem, 2001, 39, 4294-4301.   DOI   ScienceOn
10 J. Pyun, K. Matyjaszewski, T. Kowalewski, D. Savin, G. Patterson, G Kickelbick, and N. Huesing, "Synthesis of Weil-Defined Block Copolymers Tethered to Polysilsesquioxane Nanoparticles and Their Nanoscale Morphology on Surfaces", J Am Chem Soc, 2001, 123, 9445-9446.   DOI   ScienceOn
11 O. Prucker and J. Ruhe, "Synthesis of Poly(styrene) Monolayers Attached to High Surface Area Silica Gels through Self-Assembled Monolayers of Azo Initiators", Macromolecules, 1998, 31, 592-601.   DOI   ScienceOn
12 D. L. Klein, R. Roth, A. K. L. Lim, A. P. Alivisatos, and P. L. McEuen, "A Single-Electron Transistor Made from a Cadmium Selenide Nanocrystal", Nature, 1997, 389, 699-701.   DOI   ScienceOn
13 T. von Werne and T. E. Patten, "Preparation of Structurally Well-Defmed Polymer-Nanoparticle Hybrids with Controlled/ Living Radical Polymerizations", J Am Chem Soc, 1999, 121, 7409-7410.   DOI   ScienceOn
14 F. Caruso, "Nanoengineering of Particle Surfaces", Adv Mater, 2001, 13, 11-22.   DOI   ScienceOn
15 J. H. Golden, H. B. Deng, F. J. Disalvo, J. M. J. Frechet, and P. M. Thompson, "Monodisperse Metal Clusters 10 Angstroms in Diameter in a Polymeric Host: The 'Monomer as Solvent' Approach", Science, 1995, 268, 1463-1466.   DOI
16 M. C. Daniel and D. Astruc, "Gold Nanoparticles: Assembly, Supramolecular Chemistry, Quantum-Size-Related Properties, and Applications Toward Biology, Catalysis, and Nano-technology", Chem Rev, 2004, 104, 293-346.   DOI   ScienceOn
17 E. Bourgeat-Lami, "Encyclopedia of Nanoscience and Nanotechnology", Scientific Publishers, Los Angeles, 2004, Vol. 8, p.305.
18 T. Teranishi and M. Miyake, "Size Control of Palladium Nanoparticles and Their Crystal Structures", Chem Mater, 1998, 10, 594-600.   DOI   ScienceOn
19 J. J. Storhoff, A. A. Lazarides, R. C. Mucic, C. A. Mirkin, R. L. Letsinger, and G. C. Schatz, "What Controls the Optical Properties of DNA-Linked Gold Nanoparticle Assemblies?", J Am Chem Soc, 2000, 122, 4640-4650.   DOI   ScienceOn
20 D. E. Bergberiter, B. L. Case, Y. S. Liu, and J. W. Caraway, "Poly(N-isopropylacrylamide) Soluble Polymer Supports in Catalysis and Synthesis", Macromolecules, 1998, 31, 6053-6062.   DOI   ScienceOn