Efficient synthesis and characterization of novel bibenzimidazole oligomers and polymers as potential conjugated chelating ligands.
[Structure: see text]. A simple and mild condensation route for the synthesis of novel bibenzimidazole oligomers and polymers is reported here using methyl 2,2,2-trichloroacetimidate as a key starting material. The dimer, trimer, tetramer, and polymers of bibenzimidazole were synthesized as a new series of potential conjugated chelating ligands for metallopolymer studies. The polymers show a maximum absorption at around 400 nm. The optical band gap of the polymer was estimated to be 2.68 eV.
Yin
Jun
J
Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019.
Elsenbaumer
Ronald L
RL