Banca de DEFESA: AIMÉE ATAIDE DE OLIVEIRA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : AIMÉE ATAIDE DE OLIVEIRA
DATA : 20/07/2016
HORA: 14:00
LOCAL: Sala de aula do Química 1
TÍTULO:
SYNTHESIS AND COPPER(II) COMPLEX CHARACTERIZATION WITH LIGANDS VANILLOID
PALAVRAS-CHAVES:
Copper complexes; vanillin ; Schiff base; phenanthroline
PÁGINAS: 135
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Química
SUBÁREA: Química Inorgânica
ESPECIALIDADE: Campos de Coordenação
RESUMO:
The objective of this work is to contribute to the development of coordination chemistry of copper-phenanthroline system, through the synthesis and characterization of new metal complexes of the type [Cu (phen) (L) 2] where L refers to derivatives binders vanillin . Through characterization of the complex [Cu (phen) (asv) 2], [Cu (phen) (asvred) 2] and [Cu (phen) (dhz) 2], infrared, were identified that derived ligands vanillin are If coordinated to the metal center bidentate form through vanilloid groups and the phenanthroline continues in the metal coordination sphere. The UV-Vis spectrum of the complex in acetonitrile showed bands intraligantes regarding phenanthroline showing high molar absorptivities, typical intraligantes bands L and bathochromic shifts with hipsocrômico and transitions relating to the d orbitals, which reiterate the formation of the complex. The fluorescence experiment was performed with 4-hydroxy-3-metoxifenildiene-amino-benzene sulfonic acid linker (asv) in solid state and in acetonitrile solution in which was observed in the spectrum a band emission at 506 nm, which corresponds to green when the excitement of the region in the ultraviolet. The potential for reducing the Cu2 + / 1 + the complex [Cu (phen) (asv)2], [Cu (phen) (asvred) 2] and [Cu (phen) (dhz)2] was observed at -57, - 43 and -120 mV vs Ag / AgCl. The ideal values are in a potential range considered (261 to -523 mV) so that when reduced to copper (Cu +1) is capable of generating reactive oxygen species.
MEMBROS DA BANCA:
Presidente - 1530500 - ANA CRISTINA FACUNDO DE BRITO PONTES
Externo ao Programa - 1715109 - DANIEL DE LIMA PONTES
Externo à Instituição - FERNANDO JOSÉ VOLPI EUSÉBIO DE OLIVEIRA - UFPB
Externo ao Programa - 1945343 - FRANCISCO ORDELEI NASCIMENTO DA SILVA