Abstract
A 2-amino-1H-benzo [de]isoquinoline-1,3-(2H)dione ligand (L) has been synthesized which forms a supramolecular metal-organic framework with various copper(Ⅱ) salts (1–3). The supramolecular structures are formed by a combination of covalent and noncovalent forces. The ligand (L) with copper chloride forms step-like chains in which the ligand is coordinated in a bidentate manner (1), whereas for the copper perchlorate derivative a ladder-like arrangement is attained in which the ligand is coordinated in both monodentate and bidentate fashion (2). A coordination polymer is formed with copper sulfate forming a wave-like arrangement (3). The EPR spectra revealed the elongated octahedral geometry around the cooper(Ⅱ) center in the complexes (1–3) which are in good agreement with the coordination environment observed from single crystal X-ray crystallographic studies. The complexes (1–3) are highly fluorescent in aqueous as well as organic solvents. Upon complexation, ligand-based emission is enhanced in complexes. So these complexes might be useful for bioimaging applications.
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