Methyl methacrylate polymerization at samarium(II)-grafted MCM-41 |
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Authors: | Reiner Anwander Iris Nagl Clemens Zapilko Markus Widenmeyer |
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Institution: | Anorganisch-chemisches Institut, Technische Universität München, D-85747 Garching, Lichtenbergstrasse 4, München, Germany |
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Abstract: | Sm(II)-modified periodic mesoporous silica (PMS), SmN(SiHMe2)2]2(THF)x@MCM-41, was used for the synthesis of Sm(II) alkyl, alkoxide, and indenyl surface species via secondary ligand exchange. The performance of the novel Sm(II)-based organometallic–inorganic hybrid materials as initiators for the graft polymerization of methyl methacrylate (MMA) is reported. All of the Sm(II) hybrid materials including the new PMMA–PMS composites were characterized via N2 physisorption, elemental analysis, FTIR spectroscopy, and scanning electron microscopy (SEM). The organic–inorganic composites revealed complete pore blockage as well as enrichment and strong adhesion of the polymer at the exterior of the porous silica material. |
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Keywords: | samarium(II) mesoporous silica MCM-41 surface organometallic chemistry (SOMC) alkyl ligand alkoxide ligand indenyl ligand methyl methacrylate (MMA) polymerization organoaluminum reagents |
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