Golbedaghi, Reza; Justino, Licinia L. G.; Bahrampour, Marzyeh; Fausto, Rui published their research in Inorganica Chimica Acta in 2021. The article was titled 《A novel fluorescent chemosensor for Cu2+ ion based on a new hexadentate ligand receptor: X-ray single crystal of the perchlorate salt of the ligand, ion selectivity assays and TD-DFT study》.Electric Literature of C3H9NO The article contains the following contents:
New hexadentate chelates, H2L1 and L1, were synthesized. The Schiff base imine ligand, L1, was prepared by reaction of 2,2′-[ethane-1,2-diylbis(oxy)]dibenzaldehyde and propanolamine, and characterized by IR, 1H NMR and 13C NMR spectroscopies. The amine ligand, H2L1, was prepared as perchlorate salt ([H4L1](ClO4)2,) by reduction of L1 with NaBH4, and was characterized by IR (in KBr pellet), 1H NMR, 13C NMR and 2-dimensional NMR correlation spectroscopy (COSY) (in solution). The x-ray crystal structure of [H4L1](ClO4)2 was also determined and discussed. Fluorescence studies showed that H2L1 is a highly selective novel fluorescence chemosensor for the Cu2+ cation. The sensor shows selectivity for Cu2+ over 12 other metal cations. In presence of Cu2+ (5 equiv in the μM range) the fluorescence emission of the sensor, at 309 nm, is quenched by >98%. TD-DFT calculations show that ligand to metal charge transfer transitions in the complex formed between Cu2+ and the amine ligand contribute to the quenching of the fluorescence. An explanation based on TD-DFT results is also proposed for the weak fluorescence quenching in the presence of Zn2+. In the experiment, the researchers used 3-Aminopropan-1-ol(cas: 156-87-6Electric Literature of C3H9NO)
3-Aminopropan-1-ol(cas: 156-87-6) belongs to anime. Examples of direct uses of amines and their salts are as corrosion inhibitors in boilers and in lubricating oils (morpholine), as antioxidants for rubber and roofing asphalt (diarylamines), as stabilizers for cellulose nitrate explosives (diphenylamine), as protectants against damage from gamma radiation (diarylamines), as developers in photography (aromatic diamines), as flotation agents in mining, as anticling and waterproofing agents for textiles, as fabric softeners, in paper coating, and for solubilizing herbicides.Electric Literature of C3H9NO
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