Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Daniel de L. Pontes"'
Autor:
Ana C. F. de B. Pontes, Talita P. de A. Pontes, Nayara G. S. Cavalcante, Francimar Lopes de Sousa Júnior, Francisco Ordelei N. da Silva, Daniel de L. Pontes
Publikováno v:
Química Nova, Vol 46, Iss 4, Pp 336-342 (2023)
A new material formed by Shiff base (chitosan and ortho-vanillin) and copper were synthesized and characterized by UV-visible, infrared spectroscopies, thermal analysis, elemental analysis, electron microscopy, 1H NMR spectra and electrochemical tech
Externí odkaz:
https://doaj.org/article/2a0e9f1dbf044694acfc56a497b2e142
Autor:
Claudio B. S. Oliveira, Ywlliane S. R. Meurer, Marianne G. Oliveira, Wendy M. T. Q. Medeiros, Francisco O. N. Silva, Ana C. F. Brito, Daniel de L. Pontes, Valter F. Andrade-Neto
Publikováno v:
Molecules, Vol 19, Iss 5, Pp 5898-5912 (2014)
A resorcinarene derivative of vanillin, resvan, was synthesized and characterized by spectroscopic techniques. We measured the cytotoxicity (in vivo and in vitro), antioxidant and anti-Toxoplasma activities of vanillin and the resorcinarene compound.
Externí odkaz:
https://doaj.org/article/a5bd9e030cea4771ae360f0cdcb7ebaa
Autor:
Thuanny M. de Sousa, Dayana P. S. Penha, Daniel de L. Pontes, Ana C. F. de B. Pontes, Francisco O. N. da Silva
Publikováno v:
Química Nova, Vol 43, Iss 2, Pp 194-200
The compounds nitrosyl cis-[Ru(bpy)(phen)TU(NO)](PF6)3 (compound 1) and cis-[Ru(bpy)(phen)(4-N-Imd)(NO)](PF6)3 (compound 2) (bpy = 2,2’-bipyridine, phen = 1,10’-phenanthroline, TU = thiourea and 4-N-Imd = 4-nitroimidazole) were synthesized and ch
Externí odkaz:
https://doaj.org/article/83966ed3a38241d7b73e94e0f816bbe4
Autor:
Francisco O. N. da Silva, Dayana P. S. Penha, Ana E. V. de Alencar, Daniel de L. Pontes, Ana C. F. de B. Pontes, Eduardo H. S. Sousa, Luiz G. F. Lopes
Publikováno v:
Química Nova, Vol 41, Iss 4, Pp 400-404
One experimental strategy to prepare a nitrosyl metal complex is based on the acid-base conversion of NO2- into NO+. Here, we employed UV-vis absorption and FTIR spectroscopies to investigate the reaction of cis-[Ru(NO2)(bpy)2(imN)]PF6 with H3O+, whi
Externí odkaz:
https://doaj.org/article/29ee363ebab248c39317d6a23c447d4c