Elucidation of interaction between metal-free tetraphenylporphine and surface Ag atoms through temporal fluctuation of surface-enhanced resonance Raman scattering and background-light emission

Article Abstract:

A study was conducted by applying time-resolved surface-enhanced resonance Raman spectroscopy (SERRS) to the single Ag nanoaggregates on which tetraphenylporphine ([H.sub.2]TPP) molecules are adsorbed to reveal chemical interaction between [H.sub.2]TPP molecules and Ag surfaces. The observation attributed background-light emission to luminescence of complexes between [H.sub.2]TPP molecules and surface Ag atoms considering possible formation of Ag-N bonds synchronized SERRS intensity with background-light emission intensity.

Spectra, Chemical reactions, Raman spectroscopy, Silver compounds

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Miscibility and hydrogen-bonding interactions in biodegradable polymer blends of poly(3-hydroxybutyrate) and a partially hydrolyzed poly(vinyl alcohol)

Article Abstract:

Miscibility and hydrogen-bonding interactions, as well as the morphological properties of biodegradable polymer blends of poly(3-hydroxybutyrate) (PHB) and a 80% hydrolyzed poly(vinyl alcohol) were studied using Fourier transform infrared spectroscopy. It was found that PHB is miscible with poly(vinyl alcohol)(PVA80) in the amorphous phase over the whole composition range.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Polyvinyl Alcohol, Usage, Hydrogen bonding, Hydrogen bonds, Fourier transform infrared spectroscopy, Chemical properties

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