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DFT Studies on the Hyperpolarizabilities of Organometallic Complexes Containing...
Mendes, Paulo J.; Tropecêlo, P.; Carvalho, A.J.The research of nonlinear optical (NLO) materials has grown in the past decades due to the potential application in optical device technology, like data storage, communication and bio-sensing. [1] For obtaining large molecular second-order nonlinear optical (SONLO) responses, i.e. large hyperpolarizabilities (β), molecules have to possess typical “push-pull” asymmetric structures. Organometallic complexes prese...
Diamond cell Fourier transform infrared spectroscopy transmittance analysis of ...
Almeida Assis, A.C.; Barbosa, M.F.; Valente Nabais, J.M.; Custódio, A.F.; Tropecelo, P.This paper describes the use of a diamond cell Fourier transform infrared (FTIR) spectroscopy methodology for the analysis of black toners commercialised in Portugal. A total of one hundred and thirty-eight samples from eighteen manufacturers were analysed in transmittance mode through a diamond cell. This methodology was considered to be non-destructive as it allows the forensic analysis of the questioned docu...
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