Inscriere cercetatori

Site nou !

Daca nu va puteti recupera parola (sau aveti alte probleme), scrieti-ne la pagina de contact. Situl vechi se gaseste la adresa old.ad-astra.ro

Facebook

1H NMR investigation of self-association of vanillin in aqueous solution

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: M. Bogdan, C. G. Floare and A. Pirnau

Editorial: Journal of Physics: Conference Series, 182, p.012002, 2009.

Rezumat:

A self-association of vanillin have been studied by 1H NMR spectroscopy using the analysis of proton chemical shifts changes in aqueous solution as a function of concentration. The experimental results have been analysed using indefinite non-cooperative and cooperative models of molecular self-association, enabling the determination of equilibrium constants, parameters of cooperativity and the limiting values of vanillin proton chemical shifts in the complex. It was found that the dimer formation creates energetically favourable conditions for subsequent molecular association.

Cuvinte cheie: self-association of vanillin, 1H NMR

URL: http://dx.doi.org/10.1088/1742-6596/182/1/012002