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Synthesis and characterization of co...

McGrath, Jonathan G.

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Synthesis and characterization of core/shell hydrogel nanoparticles and their application to colloidal crystal optical materials.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Synthesis and characterization of core/shell hydrogel nanoparticles and their application to colloidal crystal optical materials./
Author:	McGrath, Jonathan G.
Description:	236 p.
Notes:	Adviser: L. Andrew Lyon.
Contained By:	Dissertation Abstracts International68-05B.
Subject:	Chemistry, Analytical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3261689

Synthesis and characterization of core/shell hydrogel nanoparticles and their application to colloidal crystal optical materials.
McGrath, Jonathan G.

Synthesis and characterization of core/shell hydrogel nanoparticles and their application to colloidal crystal optical materials. - 236 p.

Adviser: L. Andrew Lyon.

Thesis (Ph.D.)--Georgia Institute of Technology, 2007.

This dissertation describes the use of spherical core/shell type micro- and nanoparticles as building blocks for the fabrication of colloidal crystals. The polymer component used in all of the projects that are described herein is poly-N-isopropylacrylamide (pNIPAm). The polymeric identity of particles composed of this soft, hydrogel material, which is also thermoresponsive, contributes to the self-assembly of such particles to form ordered structures. Chapter 2 examines a characterization technique using fluorescence resonance energy transfer (FRET) to investigate the structure of particles that possess a core/shell topology. Chapters 4-6 investigate strategies to impart both hard (dense core) and soft (flexible shell) properties to the particles by using styrene as the main component in a copolymer synthesis with pNIPAm (pS- co-NIPAm particles). The resulting crystal assemblies, which could be formed by simple drying procedures, were demonstrated to be robust and their application as processable, photonic inks is also investigated. Chapter 7 examines the ability to crosslink these crystals together by simple heating methods to produce robust films, and the optical properties of these crystal films could be tuned by simple rehydration. Chapters 3 and 5 examine the synthesis and self-assembly strategies of core/shell particles using the properties of pNIPAm shell layers that have been added to different types of core particles (silver or pS-co-NIPAm) for the purposes of fabricating colloidal crystals using thermal annealing procedures. Chapter 8 explores the use of silver particles as tracers for the characterization of colloidal crystals composed of thermally annealed colloidal crystals composed of pNIPAm hydrogel particles.Subjects--Topical Terms:

586156
Chemistry, Analytical.

Synthesis and characterization of core/shell hydrogel nanoparticles and their application to colloidal crystal optical materials.
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035 $a (UMI)AAI3261689
035 $a AAI3261689
040 $a UMI $c UMI
100 1 $a McGrath, Jonathan G. $3 1280705
245 1 0 $a Synthesis and characterization of core/shell hydrogel nanoparticles and their application to colloidal crystal optical materials.
300 $a 236 p.
500 $a Adviser: L. Andrew Lyon.
500 $a Source: Dissertation Abstracts International, Volume: 68-05, Section: B, page: 3016.
502 $a Thesis (Ph.D.)--Georgia Institute of Technology, 2007.
520 $a This dissertation describes the use of spherical core/shell type micro- and nanoparticles as building blocks for the fabrication of colloidal crystals. The polymer component used in all of the projects that are described herein is poly-N-isopropylacrylamide (pNIPAm). The polymeric identity of particles composed of this soft, hydrogel material, which is also thermoresponsive, contributes to the self-assembly of such particles to form ordered structures. Chapter 2 examines a characterization technique using fluorescence resonance energy transfer (FRET) to investigate the structure of particles that possess a core/shell topology. Chapters 4-6 investigate strategies to impart both hard (dense core) and soft (flexible shell) properties to the particles by using styrene as the main component in a copolymer synthesis with pNIPAm (pS- co-NIPAm particles). The resulting crystal assemblies, which could be formed by simple drying procedures, were demonstrated to be robust and their application as processable, photonic inks is also investigated. Chapter 7 examines the ability to crosslink these crystals together by simple heating methods to produce robust films, and the optical properties of these crystal films could be tuned by simple rehydration. Chapters 3 and 5 examine the synthesis and self-assembly strategies of core/shell particles using the properties of pNIPAm shell layers that have been added to different types of core particles (silver or pS-co-NIPAm) for the purposes of fabricating colloidal crystals using thermal annealing procedures. Chapter 8 explores the use of silver particles as tracers for the characterization of colloidal crystals composed of thermally annealed colloidal crystals composed of pNIPAm hydrogel particles.
590 $a School code: 0078.
650 4 $a Chemistry, Analytical. $3 586156
650 4 $a Chemistry, Polymer. $3 1018428
690 $a 0486
690 $a 0495
710 2 $a Georgia Institute of Technology. $3 696730
773 0 $t Dissertation Abstracts International $g 68-05B.
790 $a 0078
790 1 0 $a Lyon, L. Andrew, $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3261689