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Minkyung Lim

speaker for catalysis conference 2017 - Minkyung Lim

Title: Reusable Cu catalysts dispersed on two types of supports and its application in the [3+2] cycloaddition in water : Revere phase silica gel and thermoresponsive poly(NIPAM-co-4-VP)

Minkyung Lim

Hanyang university, Republic of Korea

Biography

Two types of solid supports synthesized for the preparation of heterogeneous catalysts. 2-Pyridinecarboxaldehyde ligand was anchored on commercially available revere phase 3-aminopropyl-functionalized silica gel followed by Cu metal immobilization. Amino-functionalized reverse phase silica with alkyl end capped amino groups was used to induce hydrophobic behavior in the polar silica support. Poly(NIPAM-co-4-VP) was synthesized from N-isopropylacrylamide and 4-vinylpyridine with a 1:1 monomer ratio and followed by Cu metal immobilization. Poly(NIPAM-co-4-VP) undergoes a phase transition at the low critical solution temperature with a change from the hydrophilic to the hydrophobic core in a hydrophilic solvent. These properties of the catalysts enabled the [3+2] cycloaddition in water and showed good results. These catalysts are stable in air and reusable over several times with negligible leaching of Cu metal. Various characterization methods including XPS, ICP, DSC, SEM, BET, 1H- and 13C- NMR, solid NMR are used to verify the efficiency of the catalysts. 

Audience Take away:

• From this presentation, they will learn how to synthesis new heterogeneous catalysts and the [3+2] cycloaddition using catalysts. 
• They will be able to obtain information on the organic reaction in water using reverse phase silica catalyst and polymer catalyst with LCST behavior.
 

Abstract

Minkyung, Lim majored in organic chemistry in the department of applied chemistry at Hanyang University.
She is currently a Ph.D. student in the department of bionanotechnology at Hanyang University.
She is interested in organometallic catalyst and has published related papers. Her research is focused on the synthesis of new catalyst and the application of various organic chemical reactions in water by metals such as Pd, Au, Cu, etc.