Cyclam as a spacer for a novel class of responding multitopic polymers.

GASNIER, A.; BUCHER, C.; MOUTET, J.-C.; ROYAL, G.; SAINT-AMAN, E.; TÉRECH, P.

Dijon, Francia.

Conferencia; GPOL. National conference on coordination chemistry and synthesis of polyamines.; 2008

National conference on coordination chemistry and synthesis of polyamines.

One of the most appealing developments in coordination chemistry is the design of supramolecular equilibrium polymers. These architectures, elaborated through non-covalent strategies offer exciting perspectives in material sciences since their properties can be tuned by external stimuli. Such coordination polymers are promising candidates as supramolecular switches for optical and electronic applications.These architectures, elaborated through non-covalent strategies offer exciting perspectives in material sciences since their properties can be tuned by external stimuli. Such coordination polymers are promising candidates as supramolecular switches for optical and electronic applications. Our goal was to elaborate redox responsive architectures whose properties could be electrochemically activated and controlled (pict. 1). In order to study such “smart” molecular materials, a family of multitopic ligands was synthesised. Two terpyridine fragments were introduced on different cyclam plateforms as coordinating spacer (fig. 1). These bisterpyridine-cyclam-based tectons, allowed us to elaborate a wide range of heterobimetallic polymers (scheme 1) whose properties were investigated by electrochemistry, spectrophotometry, mass spectrometry, NMR, and viscosimetry.