Journal Club do Departamento de Física dos Materiais e Mecânica – FMT
Nesta semana o pós-graduando Arthur Prado Camargo, do Grupo Teórico de Materiais, apresentará o artigo (Shigeki Kawai et al., Science Advances 12 May 2017: Vol. 3, no. 5, e1603258, DOI: 10.1126/sciadv.1603258): “Direct quantitative measurement of the C==O⋅⋅⋅H–C bond by atomic force microscopy”.
Dia: 01 de novembro, quarta-feira, às 12h10.
Local: Sala de Seminários José Roberto Leite do Edifício Alessandro Volta (bloco C).
Abstract:
The hydrogen atom—the smallest and most abundant atom—is of utmost importance in physics and chemistry. Although many analysis methods have been applied to its study, direct observation of hydrogen atoms in a single molecule remains largely unexplored. We use atomic force microscopy (AFM) to resolve the outermost hydrogen atoms of propellane molecules via very weak C==O⋅⋅⋅H–C hydrogen bonding just before the onset of Pauli repulsion. The directmeasurement of the interaction with a hydrogen atom paves the way for the identification of three-dimensional molecules such as DNAs and polymers, building the capabilities of AFMtoward quantitative probing of local chemical reactivity.
