Abstract
A series of novel metallo-supramolecular polymers was prepared, based on 2,6-bis(2-oxazolinyl)pyridine chelating groups bridged with thiophene, bithiophene and thienothiophene as a linker, beginning from commercially available (chelidamic) acid.
Highlights
Supramolecular materials have attracted the attention of many researches during the past decades.[1,2] An important subclass of these materials is represented by metallo-supramolecular polymers (MSPs).[3]
The main reasons behind this decision were as follows: (i) oxazoline complexes have a large application potential in microelectronics and as catalytic systems;[28,29,30,31,32] (ii) pybox based ligands allow an easy derivatization through attaching substituents at the 4-position of the pyridine rings; (iii) pybox derivatives exhibit much better solubility in organic solvents, which is an important parameter in MSP processing.[33]
The synthesis pathway to the unimers studied is depicted in the Electronic supplementary information (ESI) as Scheme S1.† The precursor (7) 4-bromo-2,6-bis(4,5dihydro-2-oxazolyl)-pyridine was synthesized from a cheap chelidamic acid in high yield (82%) by a 6-step procedure applying a simple type of chemical reaction
Summary
Supramolecular materials have attracted the attention of many researches during the past decades.[1,2] An important subclass of these materials is represented by metallo-supramolecular polymers (MSPs).[3]. The process of self-assembly of the prepared unimers into MSPs by means of complexation with the selected model ion couplers, Fe2+, Zn2+, Ni2+, Cu2+, performed like a detailed properties survey, is new.
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