Design, synthesis, characterization, and evaluation of boronate ester-linked porous materials: Covalent organic frameworks and polymers of intrinsic microporosity | Posted on:2011-05-22 | Degree:Ph.D | Type:Dissertation | University:University of South Carolina | Candidate:Lanni, Laura M | Full Text:PDF | GTID:1441390002467947 | Subject:Chemistry | Abstract/Summary: | | An array of porous boronate ester-linked materials is presented here. Beginning with evaluation of a series of alkylated covalent organic frameworks (COFs), insight into the influence of alkylation in the hexagonal COF pores on the hydrolytic stability of the B-O linkages led to development of a family of hybrid COFs (HCOFs). These HCOFs were made by incorporating a gradual ladder of alkylation into the COF pores and provided a synthetic method to dial in stability along with porosity for specific COF applications. Parallel research resulted in a new COF with incorporated phthalocyanine groups (CuPC-COF) which could lead to future semiconducting thin films. The synthetic strategy to produce an octahydroxy-phthalocyanine monomer and the typical COF characterizations of PXRD and gas uptake are reported.;The newest materials produced are porous yet amorphous and are the first family of boronate ester-linked polymers of intrinsic microporosity (PIMs). This family utilized the kink in a spirobisindane bis-diol monomer along with linear and trigonal boronic acids to produce amorphous solids which are intrinsically microporous. The potential of these materials to form permeable membranes and gas storage/separation devices, along with an abundant list of alternative commercially available monomers, warrant further development and testing of these boronate ester-linked PIMs. | Keywords/Search Tags: | Boronate ester-linked, Materials, Porous, COF | | Related items |
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