Synthesis, characterization, fluorescence and computational studies of new Cu2+, Ni2+ and Hg2+ complexes with emissive thienylbenzoxazolyl-alanine ligands

► Cu(II), Ni(II) and Hg(II) complexes as potential cleavage reagents for peptides and proteins. ► Complexation of protonated amino-acid. ► Fluorescent materials in solid state.