Self-assembly of two one-dimensional zinc polymers based on (+)-N-tosyl-l-glutamic acid

Two novel zinc (II) coordination polymers [Zn(Him)(H2O)(L)]n (1) and {[Zn(2,4′-bipy)(H2O)](L)}n (2) (H2L = (+)-N-tosyl-l-glutamic acid, Him = imidazole, and 2,4′-bipy = 2,4′-bipyridine) were synthesized and then structurally characterized by elemental, infrared, thermogravimetric, and X-ray crystallography analyses. Compound 1 crystallized in the chiral space group P21 and had a ladder-like one-dimensional double-chain structure. Compound 2 crystallized in the achiral space group P21/c and had a one-dimensional single-chain framework. Both compounds assembled to form two-dimensional supramolecular structures through hydrogen-bonding interactions. The two compounds also showed intense fluorescence at room temperature.