稀土-2,6-吡啶二甲酸-氧化三苯基膦配合物的合成及其荧光性质

Four new rare earth solid complexes with 2,6-pyridinedicarboxylic acid and triphenylphosphine oxide were synthesized for the first time.Their structures and properties have been studied by means of elemental analysis,complexometric titrations,IR,TG-DTA and molar conductivity,and the composition of these complexes can be represented as [RE2(L1)3(L2)(H2O)2]·nH2O(RE=Sm,Eu,Tb,Dy;L1 = 2,6-pyridinedicarboxylic acid;L2 = triphenylphosphine oxide).The fluorescence spectra of them have been determined and they all show the characteristic fluorescent properties of the central ions(Sm3+,Eu 3+,Tb3+,Dy3+).

气相色谱法检测牙膏中低含量的过氧化氢

利用过氧化氢将三苯基膦氧化成氧化三苯基膦,同时排除活性氧的干扰,使用气相色谱法对氧化三苯基膦进行分离和检测,从而达到检测过氧化氢的目的。该方法灵敏度高、准确度高,能够判断出牙膏中是否含有少量过氧化氢,可以避免假阳性。

一种Zn(Ⅱ)配合物的晶体结构和抗菌活性

合成了一种基于氧化三苯基膦配体的Zn(II)合物,通过X-射线单晶衍射,分析了配合物的结构特点,化合物属于三斜晶系,P-1空间群,a=10.005(5),b=19.614(5),c=21.325(5)Å,α=117.054(5),â=98.215(5)°,γ=95.132(5),V=3632(2)Å^(3),Z=4,D_(c)=1.350 Mg/m^(3),F(000)=1520,Ì_(r)=738.07,μ=0.915 mm^(-1),独立衍射点23015个,最终偏离因子R=0.0526,wR=0.1712。研究了材料的抗菌活性,结果显示材料对葡萄球菌和大肠杆菌都具有好的抗菌性能。