7361-95-7Relevant academic research and scientific papers
Holmium(III)-selective fluorimetric optode based on N,N-bis(salicylidene)- naphthylene-1,8-diamine as a neutral fluorogenic ionophore
Ganjali, Mohammad Reza,Hosseini, Morteza,Karimi, Anahita,Haji-Hashemi, Hedieh,Salavati-Niasari, Masoud,Norouzi, Parviz
, p. 224 - 229 (2014)
For the first time a highly sensitive and selective fluorimetric optode for determination of trace amounts of Ho3+ ions was prepared. The sensing system was prepared by incorporating of N,N-bis(salicylidene)- naphthylene-1,8-diamine (L) as a neutral Ho3+-selective fluoroionophore, in a plasticized PVC membrane containing sodium tetraphenyl borate as a lipophilic anionic additive. The response of the sensor is based on the strong fluorescence quenching of L by Ho3+ ions. At pH 5.4, the proposed sensor displays a calibration curve over a wide concentration range of 1.0 × 10-10-1.0 × 10-3 M, with a relatively fast response time of less than 1 min. In addition to high stability, high reproducibility and a relatively long working lifetime, the sensor shows a good selectivity towards Ho3+ ion with respect to common coexisting cations. The fluorescence optode was applied to determination of holmium ion contents of water samples.
Bioactive Hetero Bimetallic Ni(II)/Zn(II) Complexes with Compartmental Schiff Bases and Triphenylphosphine as Co-Ligand: Synthesis, Characterization and Thermal Decomposition
Suyambulingam, Jone Kirubavathy,Subramanian, Chitra,Velusamy, Praveena,Rathinasamy, Punitha Ragavi,Gowrishankar, Praveena M.,Sakthivelmurugan, Priyanka
, p. 75 - 82 (2019)
Two new bimetallic complexes NiZnC22H14N4S2O2PPh3 and NiZnC26H16N4S2O2PPh3 has been synthesized and characterized using var
Non-symmetrical tetradentate vanadyl Schiff base complexes derived from 1,2-phenylene diamine and 1,3-naphthalene diamine as catalysts for the oxidation of cyclohexene
Boghaei, Daver M,Mohebi, Sajjad
, p. 5357 - 5366 (2007/10/03)
Two series of the novel unsymmetrical diimino tetradentate Schiff bases derived from phenylenediamine and 1,3-naphthalene diamine and their vanadyl complexes were synthesized by template and non-template methods and characterized by 1H, 13C NMR, IR, UV-Vis and elemental analysis. These complexes are used as catalysts for the selective aerobic oxidation of cyclohexene. The catalytic activity increases as the number of electron-donor groups decreases, and the catalytic selectivity is varied by changing the substituents on the ligands. The catalytic system described here is an efficient and inexpensive method for the oxidation of olefins, with the advantages of high activity, selectivity, re-usability and short reaction times. Complexes containing the naphthylene bridged ligands had similiar redox potentials, however, their catalytic activities are quite varied. This difference in their activity is strongly dependent on fine structural data and ΔEp. But in the complexes containing phenylene bridged ligands, comparing the GC, redox potential and ΔEp measurements yields a good correlation between catalytic activity and redox potential and a slight corrolation to selectivity. In general, the conversion percentage decreases with the increase of ΔEp and decrease of Eredox0′.
