Bidentate Schiff Base Ligands Appended Metal(II) Complexes as Probes of DNA and Plasma Protein: In Silico Molecular Modelling Studies.

HL1 and HL2 (HL1 = 5-diethylamino-2-({[4-(diethylamino)phenyl]imino}methyl)-phenol; HL2 = 5-diethylamino-2-({[4-(dimethylamino)phenyl]imino}methyl)-phenol) are new Schiff base ligands which were prepared along with their metal(II) complexes of [Cu(L1)] (1), [Cu(L1)] (2), [Ni(L2)] (3) and [Ni(L2)] (4) and characterized by different analytical as well as spectroscopic analyses. The single crystal XRD analysis confirms the proposed structure of ligands such as HL1 and HL2. EPR spectral analysis gives evidence about the tetrahedrally coordinated geometry of complexes 1 and 2.

Iron oxide nanoparticle core-shell magnetic microspheres: Applications toward targeted drug delivery.

This study describes a sensitive reactive oxygen species (ROS)-responsive lecithin (LEC) incorporated iron oxide nanoparticle (FeO NP) system with potent anti-inflammatory properties and even more so when the antioxidant drug curcumin (CUR) is encapsulated in the PLGA hybrid magnetic microsphere system (FeO@LEC-CUR-PLGA-MMS). The delivery system is responsive to ROS including an HO environment to release the payload (CUR) drug. Greater cytotoxicity properties were observed in the presence of FeO@LEC-CUR-PLGA-MMS against A549 and HeLa S3 cells with IC values after 24 h of 10 and 12 μg/mL and 10 and 20 μg/mL, respectively.

Biological Impacts of Metal(II) Complex-Based DNA Probes Derived from Bidentate N,O Donor Schiff Base Ligand.

In this article, we have reported the preparation and structural characterization of a new Schiff base ligand (E)-2-(((2,6-difluorophenyl)imino)methyl)phenol (HSBL) and its derived metal(II) complexes [Cu(SBL)] (1), [Ni(SBL)] (2) and [Pd(SBL)] (3). Using various analytical and spectroscopic techniques, their structural properties have been appraised. The proposed chemical structure of HSBL has been confirmed by Single crystal XRD studies.

Crystal structure, optical properties, DFT analysis of new morpholine based Schiff base ligands and their copper(II) complexes: DNA, protein docking analyses, antibacterial study and anticancer evaluation.

New morpholine derived Schiff base ligands (HL and HL) and their Cu(II) complexes [Cu(L)] (1) and [Cu(L)] (2) have been synthesized and characterized by H NMR, IR, UV-Vis, EPR studies and cyclic voltammetric analyses. Single crystal X-ray crystallography studies confirm the structure of newly synthesized Schiff base ligands HLand HL. The ground state electronic structures of Cu(II) complexes 1 and 2 have been investigated by DFT/B3LYP theoretical analysis with 6-31G (d,p) and LANL2DZ basis set.

A theranostic nanocomposite system based on iron oxide-drug nanocages for targeted magnetic field responsive chemotherapy.

In this work, a theranostic nanocage system was developed for the targeted delivery of the anti-cancer agents camptothecin (CPT) and luotonin A (LuA). The core of the nanocage system (FeO@OA-AD-SP NCs) was formed by biogenically synthesized FeO nanoparticles (NPs) decorated with a model anti-cancer drug (AD) and biosurfactant saponin (SP). The FeO@OA-AD-SP NCs showed a high lipophilic AD loading efficiency (>80%) and a controlled pH-responsive drug release in stimulated cancerous cells in pH 6.

Natural alkaloid Luotonin A and its affixed acceptor molecules: Serum albumin binding studies.

Effective interaction of natural alkaloid Luotonin A (L) and its affixed acceptor molecules 1 and 2 with donor molecule as Bovine serum albumin (BSA) at various pH (4.0, 7.4 and 10.

Analytical methods to determine the comparative DNA binding studies of curcumin-Cu(II) complexes.

DNA interaction studies of two mononuclear [1:1(1); 1:2(2)] copper(II) complexes of curcumin have been studied. The interaction of these complexes with CT-DNA has been explored by physical methods to propose modes of DNA binding of the complexes. Absorption spectral titrations of complex 1 with CT-DNA shows a red-shift of 3 nm with the DNA binding affinity of K(b), 5.