Studying Of Design, Synthesis And Properties Of Platinum (Ⅱ)-containing Backbone-type Polymer Solar Cell Meterials

In recent years, Metallopolymers with backbone of conjugated poly-yne and platinum metal atoms are becoming increasingly atractive because they are very promising and versatile structural building blocks for Molecular wires, Organic light-emitting diode (OLED) and photovoltaic materials. In this paper, several series D-A structural Metal-containing polymers based perylene bisimide, benzothadiazole and fluorenone are synth-esized and characterized. A focus research on tunning the band-gap with Tienyl and the structure-property relation of materials are detail described. The three part work of the dissertation as follow:1, Synthesis and characterization of the Metal-containing polymers based perylene bisimide(PPBI-yl-Pt, PTIPBI-yl-Pt, PT2PBI-yl-Pt). All the materials are thermal stability, organic soluble and have excellent photophysic properties. Electrochemical and spectral analysis has abtained a low band-gap about 1.6-1.8 eV. This result reveals the Pt and the D-A interaction in the skeleton effectively reduce the band gap of the molecule. The wide absorption spectra, excellent thermal stability and electronic properties make those polymers prominent candidates for photovoltaic applications.2, Synthesis and characterization of series of Metal-containing polymers based benzothiadiazole and fluorenone respectively. A focus is the influence of Thienyl of the Metal-containing polymer sebstituted variety alkyl. As the Metal-containing polymers based benzothiadiazole, a decline of HOMO and LUMO leve was observed when Metal-containing polymer was sebstituted by longer alkyl group and little influence on the band gap (Eg). As the Metal-containing polymers based fluorenone, A decline of HOMO, LUMO and band gap (Eg) was observed when Metal-containing polymer was sebstituted by longer alkyl group. This result can be a reference for design of novel solar cell materials.3, Synthesis and characterization of a low-bandgap Metal-containing polymers containing benzothiadiazole and cyclopentadithiophene units. The Metallated polymer possesses extremely low bandgaps of 1.60 eV, The lower band-gap extend the absorption spectrum toward the near-infrared (NIR) range of the solar spectrum and matching the solar flux better. The polymer with lower band gap ilustates a prominent candidates for NIR photovoltaic applications.