The present work introduces coordinative binding of CuII ions with both amino-functionalized silica nanoparticles (SNs) and green-emitting carbon dots (CDs) as the pregrequisite for CuII-assisted self-assembly CDs at surface SNs. produced composite SNs exhibit stable in time stimuli-responsive green fluorescence derived from assemblage CDs. response is sensitive to complex formation glutathione...

The acid-base chemistry that drives catalysis in pyridoxal-5'-phosphate (PLP)-dependent enzymes has been the subject of intense interest and investigation since the initial identification of PLP's role as a coenzyme in this extensive class of enzymes. It was first proposed over 50 years ago that the initial step in the catalytic cycle is facilitated by a protonated Schiff base form of the holoe...

In the title compound, C(16)H(15)ClN(2)O(3)·H(2)O, the water mol-ecule is linked to the Schiff base mol-ecule via an O-H⋯O hydrogen bond. In the Schiff base mol-ecule, an intramolecular O-H⋯N hydrogen bond occurs and the dihedral angle between the two benzene rings is 20.5 (5)°. In the crystal, the Schiff base and water mol-ecules are linked by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, fo...

Five coordinated novel complexes of CuII and NiII have been synthesized from benzil and 1,3- diaminopropane-CuII/NiII complex and characterized by elemental analysis, i.r., n.m.r., e.p.r, molar conductance and u.v-vis, spectroscopy. The complexes are ionic in nature and exhibit pentaeoordinated geometry around the metal ion. The reaction kinetics of C25H36N5O2CuCl with calf thymus DNA was studi...

Sr2Cu3O4Cl2 has CuI and CuII subsystems, forming interpenetrating S=1/2 square lattice Heisenberg antiferromagnets. The classical ground state is degenerate, due to frustration of the intersubsystem interactions. Magnetic neutron scattering experiments show that quantum fluctuations cause a two dimensional Ising ordering of the CuII's, lifting the degeneracy, and a dramatic increase of the CuI ...

In the title Schiff base, C(15)H(15)NO, the benzene rings form a dihedral angle of 74.91 (1)°. There is a strong intra-molecular O-H⋯N hydrogen bond.

The copper–phenanthroline complex CuI(Phen)2 was the first artificial nuclease studied in biology. mechanism responsible for this activity involves CuII(Phen)2 and H2O2. Even if H2O2/Cu systems have been extensively biology oxidative chemistry, most of these studies were carried out at physiological pH only, little information is available on generation radicals by H2O2/CuII-Phen system. In con...

The Schiff base 2-[(4-methyl-phen-yl)imino-meth-yl]-6-methoxy-phenol (HL) forms a complex with a Zn(2+) atom and two independent thio-cyanate ions, [Zn(NCS)(2)(C(15)H(15)NO(2))(2)], in which two phenolate O atoms the two independent Schiff base ligands are coordinated to thee Zn(2+) atom. The protonated imine N atoms are involved in an intramolecular hydrogen bond with the phenoxide group. The ...