Hybrid Zeolitic Imidazolate Frameworks : Controlling Framework Porosity and Functionality by Mixed - Linker Synthesis

A positive-tone, aqueous base soluble, polynorbornene (PNB) dielectric formulation has been developed. The photolithographic solubility switching mechanism is based on diazonaphthoquinone (DNQ) inhibition of polynorbornene resin functionalized with pendent hexafluoroisopropanol and carboxylic acid substituents. The optical contrast (at 365 nm) was found to be 2.3. The maximum height-to-width aspect ratio of developed line and space features was 3:2. The sensitivity, D100, of a formulation containing 20 pphr of DNQ photoactive compound (PAC) was calculated to be 408 mJ/cm 2 . The effects of the DNQ molecule structure on miscibility and dissolution of the photosensitive films in aqueous base developer were studied. The effect of the monomer composition of the PNB polymer on the dissolution rate of the formulated PNB resin was evaluated. A unique dissolution and swelling behavior was observed. The effect is attributed to a copolymer synthesized with two monomers each of which is susceptible to deprotonation in aqueous base. FTIR measurements showed that the pure PNBHFI has a small percentage of free hydroxyl groups which did not change appreciably by the addition of DNQ to the mixture. #2 High Performance ZIF/Polyimide Mixed Matrix Membrane for Separation of Propylene and Propane Presenter: Chen Zhang / Advisor: William J. Koros #3 Computational Studies of Biopolymer Translocation through Silicon Nitride Nanopore Devices Presenter: Christopher M. Edmonds / Advisor: Sankar Nair #4 Emerging single-walled aluminosilicate nanotubes for novel separation platforms Presenter: Dun-Yen Kang / Advisors: Sankar Nair and Christopher W. Jones #5 Shear-Induced Demixing in Polymeric Membrane Dopes Presenter: Emily Peterson / Advisor: Victor Breedveld #6 Poster Title: Impact of Functional Groups on the Adsorption Properties of the High-Stability