Two new Schiff base ligands comprising benzothiazole derivatives, namely (N,N',E,N,N'E)-N,N'-(1,3-phenylenebis(methanylylidene))bis(5-nitrobenzo[d]thiazoL2-amine (L1) and (N,N',E,N,N'E)-N,N'-(1,3-phenylene-bis(methanylylidene))bis(5-methylthiazo-L2-amine (L2), have been synthesized and thoroughly characterized using FTIR, ¹H NMR, mass UV/vis and fluorescence spectral techniques. Further, L1 and L2 lead to the formation of lanthanide complexes 1-6 with Ce(III), Nd(III), and Pr(III) ions in 1:2 (metal : ligand) stoichiometry. UV/vis spectra of L1, L2 and 1-6 exhibit characteristic ligand centered absorptions in the range of 230-350 nm. Besides, both ligands and complexes show significant emissions and good anti-bacterial activity against pathogenic bacteria. Ligands and complexes display anti-bacterial activity against bacteria Staphylococcus aureus (S.aureus) (MTCC 1144) causing skin infection and food poisoning and pimple-causing bacteria propionic bacteria acnes (P. acnes) (MTCC 1951).

两个新的包含苯并噻唑衍生物的席夫碱配体，即（N，N'，E，N，N'E）-N，N'-（1,3-亚苯基双（亚甲基亚烷基））双（5-硝基苯并[d]噻唑L2-胺（L1）和（N，N'，E，N，N'E）-N，N'-（1,3-亚苯基-双（亚甲基亚烷基））双（5-甲基噻唑-L2-胺（L2），已通过FTIR，¹ H NMR，质量UV / vis和荧光光谱技术进行了合成和彻底表征。此外，L1和L2导致与Ce（III），Nd（III）和Pr形成镧系元素配合物1-6化学计量比为1：2（金属：配体）的（III）离子L1，L2和1-6的UV / vis光谱在230-350 nm范围内表现出以配体为中心的特征吸收。此外，配体和配合物均显示出显着的发射和对病原菌的良好抗菌活性。配体和复合物对金黄色葡萄球菌（S.aureus）（MTCC 1144）表现出抗菌作用，导致皮肤感染，食物中毒和丘疹细菌，丙酸痤疮（P. acnes）（MTCC 1951）。