One for all: cobalt-containing polymethacrylates for magnetic ceramics, block copolymerization, unexpected electrochemistry, and stimuli-responsiveness

C Rüttiger,B Stühn,H Didzoleit,V Rittscher,S Vowinkel,J Elbert,F Roth,D Stock,M Gallei,E Ionescu,V Pfeifer,D Scheid

doi:10.1039/c5py01845e

Abstract

Functional cobalt-containing homo and block polymers are probed with respect to their redox-induced switchability and as preceramic materials.

Highlights

In the recent past, metal-containing polymers attracted enormous attention due to their promising combination of redox, mechanical, semi-conductive, photo-physical, optoelectronic, magnetic and catalytic properties as well as their mechanical robustness.[1,2,3,4,5,6,7,8,9,10,11,12,13] These polymers can either feature a metal center as an integral part of the polymer main chain or the metal-containing moiety is laterally attached to the polymer chain
The structure of the obtained monomer 5 was supported by 1H NMR spectroscopy (Fig. 3), 13C NMR spectroscopy (Fig. S1†), and electrospray ionization mass spectrometry (ESI-MS)
Before the block copolymerization of methyl methacrylate (MMA) and CpCoCbMA 5 was investigated, we studied the absolute molar masses of poly(CpCoCbMA), which were obtained by free radical polymerization and atom transfer radical polymerization (ATRP)

Summary

Introduction

Metal-containing polymers attracted enormous attention due to their promising combination of redox, mechanical, semi-conductive, photo-physical, optoelectronic, magnetic and catalytic properties as well as their mechanical robustness.[1,2,3,4,5,6,7,8,9,10,11,12,13] These polymers can either feature a metal center as an integral part of the polymer main chain or the metal-containing moiety is laterally attached to the polymer chain. While the NMR results indicate a similar molecular structure to that of poly(CpCoCbMA) which was obtained by thermal polymerization, only a rather low apparent molar mass, i.e. 8900 g mol−1 (Mn), was determined by using SEC vs PS calibration for poly-(CpCoCbMA) (Fig. S3†).

Results

Conclusion