Remarkable colorimetric sensing behavior of pyrazole-based chemosensor towards Cu(ii) ion detection: synthesis, characterization and theoretical investigations.

ABSTRACT: We report the synthesis of a new imine based ligand, 3-((3-methoxybenzylidene)amino)-1H-pyrazol-5-ol (HL) and its Cu(ii) complexes in 2 : 1 (HL : metal) and 1 : 1 : 1 (HL : metal : HQ) stoichiometric ratio using 8-hydroxyquinoline (HQ) as an additional bidentate ligand. The synthesized ligand (HL) and its Cu(ii) complexes (1 and 2) are structurally characterized using FT-IR, electronic absorption and emission, NMR and MS techniques. Furthermore, the complexation of Cu²⁺ with HL leads to the immediate formation of brown colour solution which indicates that HL can act as simple colorimetric sensor for Cu²⁺ ions. We further investigated that the sensor could selectively bind to the Cu²⁺ ions even in the presence of competitive ions such as Mn²⁺

SUBMITTER: Nayak N 

PROVIDER: S-EPMC9080470 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature