Synthesis And Characterization Of PPV Derivatives/Sulfide Semiconductor Nanorods Composite Materials

Recently, Organic and inorganic nanocomposite materials was one of the mostfiery research orientation in nano science and technology research. Poly(phenylenevinylene)(PPV) and its derivatives containing long-chain conjugated structure hasvery good development prospect in photoelectric material area. Seen form theresearch progress of the type material of PPV, one of its important applications wascombined with the inorganic semiconductor to form composite materials. In orderto preparation of the new type for polymer/inorganic nanometer compositematerials, mainly do the following three aspects of work.(1) SMA/PbS Composite materials were synthesized hydrothermally at120℃for24h by using styrene-maleic anhydride copolymer (SMA),Pb(NO3)2、thiourea asraw materials. The results show that the PbS nanorod are of pure cubic phase, whenDMAc as solvent pH~11and thiourea as Sulfur source PbS nanorod can bemodified well by SMA.(2) MPC-PPV/PbS nanorods composite materials were successfully synthesized bychemical deposition method. The results shows that the PbS nanorods combinedwith MPC-PPV by the chemical bonds. The length of the PbS nanorods about10μm.Decomposition temperature was340oC, eventually weightlessness rate was56%, ithas great thermal stability. The maximum absorption peaks of composite materialswere shown between408nm and530nm by PL spectra, it is shows that thecomposite materials has excellent luminance in the visible region.(3) MPC-PPV/Bi2S3nanorods composite materials were successfully synthesizedby chemical deposition method. The experimental results show that Nanorodslength is about500nm around, Band gap increase with lower HOMO level hasmore excellent optical contrast with common Bi2S3materials.