Abstract/Details

Amphiphilic dendrimers and homopolymers: Self-assembling systems by controlling the structure at the molecular level


2007 2007

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Abstract (summary)

The process of self-assembly provides unique opportunities for designing novel materials at the nano-scale. The development of such processes involves fine-tuning of chemical structures and effective use of the non-covalent forces that controls such molecules. This thesis discusses a new design of an amphiphilic species that can undergo self-assembly, directed by solvophobic/solvophilic interactions. The building block of the system contains a polar and an apolar unit, embedded within the same monomer. Amphiphilic dendrimers and homopolymers were built on this basic structure. The self-assembly of these macromolecules were studied in solvents of widely different polarities. The biphenyl based dendrimers showed aggregation behavior in the solvents, which was hitherto unknown for those. Along with their host-guest properties in solution, the preferential location of the amphiphilic functionalities were probed, in order to fundamentally understand the dendritic systems. The same design principle, applied to homopolymers also led to the formation of micelle-like and inverted micelle-like assemblies. The detailed characterization of such systems is discussed along with their behavior in a heterogeneous solvent mixture. The polymeric systems hold promise in applications such as separation nanotechnology and protein sensing.

Indexing (details)


Subject
Organic chemistry
Classification
0490: Organic chemistry
Identifier / keyword
Pure sciences, Amphiphilic functionalities, Dendrimers, Homopolymers, Self-assembly
Title
Amphiphilic dendrimers and homopolymers: Self-assembling systems by controlling the structure at the molecular level
Author
Basu, Subhadeep
Number of pages
186
Publication year
2007
Degree date
2007
School code
0118
Source
DAI-B 68/11, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780549330189
Advisor
Thayumanavan, Sankaran
Committee member
Lahti, Paul M.; McCarthy, Thomas J.; Metz, Ricardo B.
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
3289209
ProQuest document ID
304847310
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304847310
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