Microwave-assisted silylation of graphite oxide and iron(III) porphyrin intercalation

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Monika E Lipinska (Author) Other; Joao P Novais (Author) Other; Susana L H Rebelo (Author) Other; Belen Bachiller Baeza (Author) Other; Inmaculada Rodriguez Ramos (Author) Other; Antonio Guerrero Ruiz (Author) Other; Cristina Freire (Author) FCUP

Journal

Title: Polyhedron

Vol. 81

Pages: 475-484

ISSN: 0277-5387

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 4 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-009-R3J

DOI: 10.1016/j.poly.2014.07.003

Abstract (EN): The hybrid material graphite oxide (GO) intercalated with an iron(III) porphyrin was obtained upon a silylation reaction of GO with 3-bromotrimethoxypropylsilane (BrTMS) followed by metalloporphyrin immobilization. Diverse reaction conditions and microwave versus conventional heating were tested. The materials were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), thermogravimetry (TGA) and temperature programmed desorption (TPD). Microwave-assisted synthesis allowed functionalization reactions of 1 h instead of 24 h (conventional heating) with equivalent or improved yields on both silylation and metalloporphyrin immobilization reactions. The immobilizations performed in anhydrous solvent and absence of other exfoliation agents led to an increase on the GO interlayer distance of 0.14 nm, in a total space of 7 angstrom that match the metalloporphyrin thickness.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10