Supramolecular Architectures Based no Dehydro[24]annulenes: Toward the Controlled Synthesis of pi-Conjugated Nanotubular Materials via Topochemical Polymerization |
Posted on:2012-06-20 | Degree:Ph.D | Type:Thesis |
University:University of California, Los Angeles | Candidate:Suzuki, Mitsuharu | Full Text:PDF |
GTID:2461390011965103 | Subject:Chemistry |
Abstract/Summary: | |
Chapter 1 overviews currently available synthetic methodologies of carbon nanomaterials. Conventional syntheses, stepwise chemical syntheses, and seeding/cloning approaches are described. Problems associated with each methodology are pointed out.;Chapter 2 begins with introductions to the dehydroannulene-based synthesis of carbon nanomaterials and topochemical polymerization of butadiynes. This chapter then describes a new approach to achieve the controlled synthesis of tubular nanocarbon materials, namely multifold topochemical polymerization of dehydroannulenes. An extensive crystal-engineering study leads to successful formation of supramolecular nanotubes based on dehydro[24]annulenes. The obtained structures possess preferable packing parameters for the intended multifold topochemical polymerization.;Chapter 3 explores on-surface self-assemblies of dehydro[24]annulenes. The relationship between the molecular structure and self-assembling behavior of is examined with the aid of scanning tunnel microscopy. This study paves the way for the topochemical polymerization of these compounds within surface-confined self-assemblies. |
Keywords/Search Tags: | Topochemical polymerization, Dehydro, Annulenes, Synthesis |
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