Issue 10, 2011
From the journal:

New Journal of Chemistry

Micro and nano-sized polysiloxanes containing organoiron moieties†‡

Alaa S. Abd-El-Aziz,*a   Diana J. Winram,a   Patrick O. Shipman,a   Sibel Sezgin Dalgakiran,a   Paul Shipley,a   Lukas Bichlerb  and  Brian Patrickc  

* Corresponding authors

a Department of Chemistry, The University of British Columbia (Okanagan Campus), 3333 University Way, Kelowna, BC, Canada
E-mail: alaa.abd-el-aziz@ubc.ca

b School of Engineering, The University of British Columbia (Okanagan Campus), 3333 University Way, Kelowna, BC, Canada

c Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada

Abstract

Utilizing organoiron-mediated nucleophilic aromatic substitution, a number of allylamine-containing organoiron complexes were prepared. Amide formation between 1,1′-ferrocene dicarbonyl chloride and allylamine produced a similar ferrocene compound. These materials were subjected to hydrosilation with methyldiethoxyhydrosilane to generate cationic organoiron siloxanes and ferrocene-containing siloxane complexes. Electrochemical analysis of the allylamine and siloxane complexes showed redox couples characteristic of nitrogen-substituted arene-coordinated cyclopentadienyliron complexes. In situ cleavage of the ethoxy groups followed by the addition of H2SO4 resulted in the formation of polymeric materials. Thermal analysis revealed that the cationic organoiron moieties decomposed between 200 °C and 250 °C, whereas the ferrocene moiety decomposed at 110 °C and the backbones of the polymers began to decompose above 400 °C. The polymers displayed glass transition temperatures between 68 °C and 111 °C. Scanning electron microscopy showed that the polymers possessed very different morphologies, ranging from particulates to crystalline.

Graphical abstract: Micro and nano-sized polysiloxanes containing organoiron moieties

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Article information

DOI
https://doi.org/10.1039/C1NJ20477G
Article type
Paper
Submitted
02 Jun 2011
Accepted
01 Jul 2011
First published
29 Jul 2011

New J. Chem., 2011,35, 2341-2348

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Micro and nano-sized polysiloxanes containing organoiron moieties

A. S. Abd-El-Aziz, D. J. Winram, P. O. Shipman, S. S. Dalgakiran, P. Shipley, L. Bichler and B. Patrick, New J. Chem., 2011, 35, 2341 DOI: 10.1039/C1NJ20477G

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