合成了2个新配体4-(4-硫代乙酸)甲苯基-6-苯基-2,2'-联吡啶HC^N^N(PhCH2SCOCH3)(L3)和6-(4-硫代乙酸)甲苯基-2,2'-联吡啶HC^N^N(CH2SCOCH3)(L5)及其发光的铂(Ⅱ)配合物ClPtC^N^N(PhCH2SCOCH3)(C3)和ClPtC^N^N(CH2SCOCH3)(C5).通过1H NMR谱和质谱对它们的结构进行了表征,采用X射线单晶衍射分析确定了C3的晶体结构.利用紫外-可见吸收光谱、发射光谱及激发态寿命测定研究了它们的光物理性质和电化学性质,以及配合物作为光敏剂在光催化制氢中的应用.通过系列配合物产氢效率的比较,揭示了它们的产氢效率和激发态寿命的关系.
Two new ligands 4- (p-thioacetic-S-methylphenyl) -6-phenyl-2,2'-bipyridine [ HC^N^NPh ·( CH2SCOCH3 ), L3 ] and 6-(p-thioacetic-S-methylphenyl) -2,2'-bipyridine [ HC^N^N(CH2SCOCH3 ), L5 ] as well as their platinum( 11 ) complexes ClPtC^N^N( PhCH2SCOCH3 ) (C3) and ClPtC^N^N · ( CH2SCOCH3 ) (C5) were synthesized and characterized by 1H nuclear magnetic resonance (1H NMR), electrospray ionization mass spectra(ESI-MS) and X-ray diffraction(XRD) analysis. Photophysical and electrochemical properties of the complexes were studied based on the UV-Vis absorption and emission spectra, excited-state lifetime measurements. It was found that photogenerated hydrogen efficiencies of [ ClPtC^N^N( CH3 ) ( PhCH3 ) ] ( C1 ), [ ClPtC^N^N(PhCH3 )](C2), C3, [ ClPtC^N^N( CH3 )] (C4) and C5 are in accordance with their emission lifetimes, and are arranged in the order C4〉C1〉C5〉C2〉C3.