Synthesis and characterization of montmorillonite clay intercalated with molecular magnetic compounds

Autor(es)

Martins, Marcel G. ^[1] ; Martins, Daniel O. T. A. ^[1] ; de Carvalho, Beatriz L. C. ^[1] ; Mercante, Luiza A. ^[2] ; Soriano, Stephane ^[3] ; Andruh, Marius ^[4] ; Vieira, Meri D. ^[1] ; Vaz, Maria G. F. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Fluminense, Inst Quim, BR-24020150 Niteroi, RJ - Brazil

^[2] Embrapa Instrumentacao, Lab Nacl Nanotecnol Agronegocio, BR-13560970 Sao Carlos, SP - Brazil

^[3] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ - Brazil

^[4] Univ Bucharest, Fac Chem, Inorgan Chem Lab, Bucharest - Romania

• Tipo de documento: Artigo Científico
• Fonte: Journal of Solid State Chemistry; v. 228, p. 99-104, AUG 2015.
• Citações Web of Science: 13

Resumo

In this work montmorillonite (MMT) clay, whose matrix was modified with an ammonium salt (hexadecyltrimethylammonium bromide - CTAB), was employed as an inorganic host for the intercalation of three different molecular magnetic compounds through ion exchange: a nitronyl nitroxide derivative 2-{[}4-(N-ethyl)-pyridinium]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxi de (p-EtRad(+)) and two binuclear coordination compounds, {[}Ni(valpn)Ln](3+), where H(2)valpn stands for 1,3-propanediyl-bis(2-iminomethylene-6-methoxy-phenol), and Ln=Gd-III; Dy-III The pristine MMT and the intercalated materials were characterized by X-ray powder diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and magnetic measurements. The X-ray diffraction data analysis showed an increase of the interlamellar space of the intercalated MMT, indicating the intercalation of the magnetic compounds. Furthermore, the magnetic properties of the hybrid compounds were investigated, showing similar behavior as the pure magnetic guest species. (C) 2015 Published by Elsevier Inc. (AU)

• Processo FAPESP: 12/23880-3 - Desenvolvimento de sensores poliméricos nanoestruturados como plataforma de diagnóstico de bactérias causadoras de mastite bovina
• Beneficiário: Luiza Amim Mercante
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado