论文部分内容阅读
In this text,we present researches on the synthesis of polyoxo-titanium clusters (PTCs) by the use of gadolinium pivalate precursor.During the synthesis process,we discover that solvents play an important role.When acetonitrile was used as solvent,Ti8Gd(μ2-O)(μ3-O)5(Sal)5(OPiv)2(μ2-OiPr)3(μ-OiPr)8 (PTC-82) (H2Sal =salicylic acid,HOPiv =pivalic acid) was obtained.When N,N-dimethylformamide (DMF) was used as solvent under the same reaction conditions,Ti4Gd2(μ3-O)2(Sal)4(OPiv)4(μ2-OiPr)2(μ-OiPr)4(DMF)2 (PTC-83) was synthesized.The solid-state UV absorption spectra revealed that the dopant of lanthanide and the incorporation of salicylic acid ligands have successfully narrowed the bandgap of PTCs.In addition,they exhibited rapid and reproducible photo-responses.