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Title: Preparation, Characterization and Catalytic Applications of Microporous Network Polymers-based on Metalloazaphthalocyanines
Other Titles: تحضير، توصيف وتطبيق مواد حفّازة لشبكات بوليمر مسامية متناهية الصغر بالاعتماد على مركبات الميتالوأزافيثالوسيانينز
Authors: Doua'a Salman AlMarzouq 
Supervisor: Dr. Saad Makhseed
Keywords: Preparation, Characterization and Catalytic Applications of Microporous Network Polymers-based on Metalloazaphthalocyanines
Issue Date: 2012
Publisher:  Kuwait university - college of graduate studies
Abstract: Cobalt azaphthalocyanine network polymer of intrinsic microporosity was prepared by cyclotetramerization reaction of bisazaphthalonitrile mediated by anhydrous cobalt acetate in quinoline solution at high temperature. Spectroscopic and structural characterization of the prepared network polymer confirm that the site of contortion (i.e. a Spiro-centre) and highly rigid dioxane-linkage within the monomer azaphthalocyanine ensure a space-inefficient packing of the macrocycles and prevent structural relaxation to give accessible surface area. Nitrogen adsorption measurements gave apparent BET surface area of up to 237 m 2 g -1 and the shape of the isotherm was consistent with a high concentration of subnanometer pore (0.5 – 0.6 nm) as aided by the High Resolution Transmission Electron Microscopic images showing the nanoscale voids. The catalytic activity of the prepared network polymer as basic heterogeneous catalyst was evaluated by running different Michael addition reactions and its performance was excellent along with the high product yields. This novel microporous catalyst, which is thermally and chemically stable, interestingly offers advantageous features such as facile recovery and reusability without loss in catalytic activity. The material represents a promising benign catalyst to replace many conventional basic catalysts (e.g. Pyridine, Triethylamine and Piperidine) which can encounter many environmental problems.
Appears in Programs:0420 Chemistry (M.Sc.)

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