catalyst in greenconditions. The preparations of H₂TPFPP and [Fe(TPFPP)Cl] typically use toxic solvents and can be made significantly greener and simpler using microwave heating and optimization of the reaction conditions. In the optimized procedure it was possible to eliminate nitrobenzene from the porphyrin synthesis and replace DMF by acetonitrile in the metalation reaction, concomitant with a
Evans, Steven; Smith, John R. Lindsay, Journal of the Chemical Society. Perkin Transactions 2 (2001), 2000, # 7, p. 1541 - 1551
作者:Evans, Steven、Smith, John R. Lindsay
DOI:——
日期:——
Microwave-assisted silylation of graphite oxide and iron(III) porphyrin intercalation
作者:Monika E. Lipińska、João P. Novais、Susana L.H. Rebelo、Belén Bachiller-Baeza、Inmaculada Rodríguez-Ramos、Antonio Guerrero-Ruiz、Cristina Freire
DOI:10.1016/j.poly.2014.07.003
日期:2014.10
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. (C) 2014 Elsevier Ltd. All rights reserved.