Synthesis,Structures And Properties Of Copper(?)and Silver(?)Supramolecular Coordination Polymers

There are micro-biological agents including bacteria,heavy metal ions and organic pollutants which can cause water pollution and can damage the nervous system,brain,kidney,and other organs.Therefore,the demand of efficient materials for the treatment of different infections has been increased.There is now growing interest in supramolecular coordination polymers?SCPs?research based antimicrobial agents gaining momentum.However,it is still a great challenge to design and prepare new SCPs materials with high activity and durability as an ideal potential source to control the release of metal ions for bactericidal applications.In order to improve the development of metal-based supramolecular coordination polymers?SCPs?as excellent disinfection agents and the structural-directed effect on antibacterial activities should be investigated urgently.In this dissertation,a series Cu???and Ag???-SCPs were synthesized and elevated their antibacterial activities as well.The synergistic antibacterial mechanisms as well as the treatment of polluted water were explored.The main points and topics in this dissertation are summarized as follows:?1?Synthesis,structures and antibacterial activities of supramolecular coordination polymers with different metal centers.A series of Cu???and Ag???supramolecular coordination polymers[Cu?TDC??H₂O?2]·H₂O?1?[Cu?TDC??phen?2]·0.5H2TDC·2H₂O?2?[Cu?phen?2?H₂O?]·2NO3?3?Ag?Blm?2?HTDC??4?have been synthesized under slow evaporation/hydrothermal conditions using O-/N-donor ligands,and their antibacterial properties were analyzes as well.They exhibit fascinating structures from mono-dimension?O-D?to one-dimension?1-D?due to different metal centers.The study on antibacterial mechanism shows that these compounds favor a slow release of metal ions and generation of destructive reactive oxygen species leading to excellent and long-term antimicrobial activities.?2?Synthesis and antibacterial activity of ID copper???-based supramolecular coordination polymer nanofibers.To enhance antibacterial activity of 1-D copper???-based supramolecular coordination polymer,[Cu?HBTC??H₂O?3]?5?nanofibers as well as its marcoparticle were synthesized.The width of as-prepared nanofibers was about 150 nm,while the size of macroparticles was about 200 jam.The nanofibers show higher antibacterial performance compared with that of macroparticles,commercial copper nanoparticles,as well as pure ligands alone.Nanofibers supramolecular coordination polymers exhibit good thermal and water stability as well.?3?Synthesis and antibacterial activity of 3D copper???-based supramolecular coordination polymer.A 3D copper???-based SCP[Cu?TDC?H₂O]·DMA?6?was synthesized under an ambient condition and characterized as well.The antibacterail results indicated that compound possess excellent performance compared with commercial Cu nanoparticles.There was no antibacterial activity found for ligand alone.The compound favored a slow release of Cu²⁺ ions and generation of destructive reactive oxygen species?ROS?,leading to excellent and long-term antimicrobial activities.?4?Adsorption properties of 3D supramolecular coordination polymer,A 3D-SCP[Cu?TDC?H₂O]·DMA?6?was explored for the treatment of wastewater such as effective removal of Hg²⁺ and Congo red?CR?in the aqueous mediun.The compound is selective for Hg as other metal/metalloid including heavy metal ions present in water.Binding of Hg with S and O atom has been confirmed by a number of techniques e.g.FT-IR spectroscopy,Energy-dispersive X-ray spectroscopy?EDS?,and X.ray photoelectron spectroscopy?XPS?etc.The maximum adsorption capacity of compound for Hg²⁺ and CR was up to 1374.04 mg g^-1 and 1893.37 mg g^-1,respectively,surpassing all those of other adsorbents materials.