Palestra intitulada “Click nanocatalysis, one molecule at a time”

• Responsável: Convidado para o Workshop em Nanotecnologia
• Câmpus: São Bernardo do Campo
• Local: Sala 104, Alpha 1, São Bernardo do Campo
• Data: 29/09/2017
• Horário: 11:00 às 12:55
• Descrição:

  Convidamos a todos para a palestra “Click nanocatalysis, one molecule at a time” a ser ministrada pelo Prof. Dr. J.C. (Tito) Scaiano, do Departamento de Química e Ciências Biomoleculares, da Universidade de Ottawa-Canadá, que ocorrerá no dia 29 de setembro de 2017, as 11:00hs, na sala 104 do bloco Alpha 1, Campus São Bernardo do Campo.
  Abaixo estão o resumo da palestra e o CV do Prof. Tito. Contamos com a presença de todos!!!

  Click nanocatalysis, one molecule at a time
  J.C. (Tito) Scaiano
  Department of Chemistry and Biomolecular Sciences
  University of Ottawa
  Ottawa, Ontario K1N 6N5, Canada.
  Organic photochemistry is an excellent tool for the production of nanostructures of gold, silver, copper, cobalt, niobium, and other elements. Copper (I) is known to be an excellent catalyst for ‘click’ reactions, a characteristic that is shared by copper nanoparticles (CuNP). Three example of CuNP catalyzed click reactions will be presented. We ask the question: Is single molecule spectroscopy ready to become a tool in organic chemistry and drug discovery? In the first example colloidal CuNP are used as click catalysts and we ask whether CuNP are the ‘real’ catalysts or merely the providers of Cu(I) in solution. Modern microscopy techniques allow us to examine the catalytic process at a single particle level and one molecule at a time. This allows the differentiation of true heterogeneous catalysis from cases where homogeneous catalysis plays a role, even when the catalyst as-introduced is heterogeneous. While scaling down reactions from ‘the mole to the molecule’ offers a unique intimate understanding of reaction mechanisms, the real challenge is to transfer the molecule-level knowledge back to the laboratory bench thus taking advantage of the information to improve catalysis at the production level. The second example deals with copper-oncharcoal (Cu@C) a commercial catalyst. We use single molecule techniques to understand the efficiency and reactivity of Cu@C and use this

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