title: DNA interaction of some polymer-copper(II) complexes containing 2,2'-bipyridyl ligand and their antimicrobial activities.
abstract: The water soluble polymer-copper(II) complex samples, [Cu(bpy)(2)(BPEI)]Cl(2).4H(2)O (bpy=2,2'-bipyridine, BPEI=branched polyethyleneimine), with varying degrees of copper(II) chelates content in the polymer chain, were prepared by ligand substitution method in water-ethanol medium and characterized by Infra-red, UV-visible, EPR spectral and elemental analysis methods. The interaction of these polymer-copper(II)-bipyridyl complex samples with calf thymus DNA has been explored by using electronic absorption spectroscopy, emission spectroscopy and gel electrophoresis techniques. The observed changes in the physico-chemical features of the polymer-copper(II) complex on binding to DNA suggest that the complex binds to DNA with electrostatic interaction mode. A sample of polymer-copper(II) complex was tested for its antibacterial and antifungal activity and it was found to have good antibacterial and antifungal activities.
authors.affiliation: School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India.
authors.forename: R
authors.initials: R
authors.lastname: Senthil Kumar
authors.forename: K
authors.initials: K
authors.lastname: Sasikala
authors.forename: S
authors.initials: S
authors.lastname: Arunachalam
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D000818:Animals; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D000935:Antifungal Agents / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects*; D002176:Candida albicans / Q000187:drug effects*; D003300:Copper / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D004247:DNA / Q000737:chemistry / Q000378:metabolism*; D004587:Electrophoresis, Agar Gel; D008024:Ligands; D009942:Organometallic Compounds / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D011094:Polyethyleneimine / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D011108:Polymers / Q000737:chemistry; D013057:Spectrum Analysis
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D008024:Ligands; D009942:Organometallic Compounds; D011108:Polymers; D015082:2,2'-Dipyridyl; D003300:Copper; D011094:Polyethyleneimine; D004247:DNA; C427203:calf thymus DNA