Abstract/Details

Directed self -assembly of polymeric nanocomposite materials


2006 2006

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Abstract (summary)

Materials with nanoscale dimensions display electronic, photonic, and magnetic properties different from those observed by their respective bulk materials. This thesis work has focused on the utilization of molecular recognition for modular self-assembly of nano-sized building blocks into two or three-dimensional aggregates and the precise control over their structural parameters and morphologies. Special attention will be given to the design and synthesis of molecular and macromolecular building blocks to generate micron and nanometer-scale order, to tailor local surface properties through site-selective immobilization, and to create responsive/adaptive functional materials in a controlled, reproducible, and reversible manner. The advantages, potential applications, and current challenges associated with this "bottom up" self-assembly approach will also be discussed.

I am going to demonstrate in the following chapters how we synthesized functionalized Au and CdSe nanoparticles (NPs), styrene based block copolymer with pended recognition units, and diamidopyridine ( DAP)—thymine (Thy) three-point hydrogen bonding dyads that induced recognition-mediated self-assembly of polymers and NPs into ordered and tunable/responsive nanocomposites. The resultant composite materials were addressed onto photo-lithographically defined surface regions. Desired electrical conductivity, surface wettability and biocompatibility were achieved by choosing appropriate polymers and NPs—the versatile building blocks for nanocomposite functional materials.

Indexing (details)


Subject
Organic chemistry;
Polymer chemistry
Classification
0490: Organic chemistry
0495: Polymer chemistry
Identifier / keyword
Pure sciences, Molecular recognition, Nanocomposites, Polymers, Self-assembly
Title
Directed self -assembly of polymeric nanocomposite materials
Author
Xu, Hao
Number of pages
147
Publication year
2006
Degree date
2006
School code
0118
Source
DAI-B 68/11, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549330554
Advisor
Rotello, Vincent M.
Committee member
McCarthy, Thomas J.; Tew, Gregory N.; Thayumanavan, S.
University/institution
University of Massachusetts Amherst
Department
Chemistry
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3289246
ProQuest document ID
305305519
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/305305519
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