Synthesis and characterization of metallo-supramolecular polymers from thiophene-based unimers bearing pybox ligands

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.

Novel Metallo-Supramolecular Polymers with 1-Thioxophosphole Main-Chain Units and Remarkable Photoinduced Changes in Their Resonance Raman Spectra

“…The obvious participation of [Fe( tpy ) 2 ] 2+ groups raised the question of whether or not the found spectral changes originate from them. We did not notice such spectral changes in earlier studies of conjugated Fe-MSPs derived from α,ω-bis( tpy ) unimers [ 18 , 25 , 28 , 29 , 30 , 55 , 56 , 57 ]. However, to be sure, we checked the behavior of related simple Fe complexes with monotopic tpy ligands and FeTt MSP from our recent study [ 15 ] ( Figure 10 ).…”

Iron (II) Metallo-Supramolecular Polymers Based on Thieno[3,2-b]thiophene for Electrochromic Applications

“…MSPs derived from α,ω-bis( tpy ) unimers with short oligophenylene [ 19 ] or oligothiophene [ 15 , 16 ] central units represent a significant portion of already reported electrochromic MSPs. Those derived from unimers with oligothiophene central units have been the subject of our studies [ 23 , 24 , 25 , 26 ] that we later on extended to include phosphole [ 27 ] and thieno[3,2- b ]thiophene [ 28 ] central units. These new unimers and their MSPs exhibited redshifted absorption (narrower energy bandgap) and increased fluorescence quantum yield compared to the counterparts with central units composed exclusively of thiophene-2,5-diyl units.…”