双核铼配合物复合电纺纤维的制备和氧传感性能的研究(英文)

Electrospinning preparation and oxygen sensing properties of dirhenium(Ⅰ) complex/polymer composite fibers

合成了亲脂性双核铼配合物fac-[{Re(CO)3(d19-phen)}2(4,4′-bipyridylacetylene)](OTf)2,将此配合物均匀地分散到聚苯乙烯(PS)和聚甲基丙烯酸甲酯(PMMA)中,通过电纺方法,得到复合材料纤维,并系统地研究了它们的氧传感性能。分别用线性Stern-Volmer模型,Demas双格位模型以及Lehrer模型对所得到的Stern-Volmer曲线进行了拟合,实验结果表明,这种复合纤维氧传感材料显示了短的响应时间,可逆的氧传感信号,而且由于含有亲脂性的长链烷烃配体的存在,使得铼配合物在聚合物中分散均匀,从而得到线性关系较好的Stern-Volmer曲线。

A novel lipophilic dirhenium complex fac-[ { Re （CO）3 （d19-phen） } 2 （4,4＇-bipyridyl） ] （OTf）2 （ denoted as D-Re （I） ） （ d19-phen = 4,7-dinonadecyl-1,10-phenanthroline and OTf = trifluoromethane-sulfonate） was doped homogeneously in polystyrene （PS） and polymethyl methacrylate （PMMA） fibers by electrospinning method and the oxygen quenching fluorescence behavior was systematically investigated. The linear Stern-Volmer model, the Demas and Lehrer models were used to fit the obtained Stern-Volmer curves of the composite fibers. An oxygen sensor based on the D-Re （I） composite fibers shows short response time, good reproducible signals, and linear Stern-Volmer plots attributed to the existence of the ligand containing long alkyl chain groups that makes D-Re（I） become soluble in the polymers.