钯与溴代菲的相互作用及其应用研究

Pd2＋与9-溴菲（9-BrP）生成稳定配合物，能对9-BrP产生显著的的荧光增敏效应。9-BrP-Pd2＋体系的最大激发和发射波长分别为247和364nln。荧光加强理论计算表明9-BrP与Pd2＋形成了配位数为n=3的配合物，结合常数K-A为2．812×10-4，线性相关系数r2=0．9983。9-BrP—Pd2＋体系荧光强度在Pd2＋浓度为1×10-7～2×10-5mol／L的范围内呈现良好的线性关系（r2=0．9962）。Pd2＋与9-BrP反应具有选择性和专一性，常见金属离子不会对其造成干扰。水样测定与加标回收实验结果也较为理想（回收率〉100％），表明9-BrP作为荧光探针用于检测水体中Pd2＋的方法具有可行性。

Study of Interaction between Palladium and 9-Bromophenanthrene and the Application

The complex between Pd2. and 9-Bromophenanthrene （9-BrP） which offers remarkable enhancement to the fluores- cence of 9-BrP was found for the first time. The maximum excitation/emission wavelength of 9-BrP-Pd2＋ are 247 and 364 nm, sepa- rately. According to the fluorescent enhancement theory, the coordination number of 9-BrP-Pd2＋ was calculated to be 3, complex con- stant KA is 2.812× 10 4, the linear correlation coefficient is 0.9983. Pd2＋, when the concentration is in the range of 1 × 10-7 to 2× 10-5mol. L 1, has a well Linear correlation with 9-BrP （R2=0.9962）. The complex of Pd2＋ with 9-BrP shows good selectivity and specifity, while the results of detecting Pd2＋ in tap water sample and the standard addition test are also ideal, indicating the feasibility of using 9-BrP as a fluorescent probe for determination of Pd2＋.