Synthesis, characterization and properties of four complexes based on semi-rigid bisbenzimidazole and aromatic carboxylic acid

•Four coordination polymers were synthesized based on Semi-rigid Bisbenzimidazole and Aromatic Carboxylic Acid.•Interestingly, compound-1 is 1D structure and ligand is trans configuration, compound-2 is 3D structure and ligand is cis configuration, and compound-3 and -4 is 3D structure and ligands are trans and cis configurations.•Compound-2 processes aggregation concentration quenching (ACQ) effect.