交替注入流动注射分光光度法同时测定铁和铜

以２－（５－溴－２－吡啶偶氮）－５－二乙氨基苯酚（５—Ｂｒ—ＰＡＤＡＰ）为显色剂,乳化剂ＯＰ为增溶剂,乙酸－乙酸钠缓冲液作载液,采用交替注入样品方式,建立了流动注射同时测定铁和铜的新方法．测定频率为６０样／ｈ,铁、铜的线性范围均为０．２—１．８μｇ／ｍＬ．应用于铝合金和人发中铜、铁的测定,结果满意。     

A highly soluble blue light emitting copolymer of anthracene and dialkyloxyl benzene prepared by oxidative-coupling reaction

A new kind of soluble copolymers incorporated anthracene and dialkyloxyl benzene moieties into main chain have been prepared by oxidative-coupling copolymerization. They were characterized by FT-IR, ¹H NMR, UV-Vis, GPC, X-ray, thermogrametric analysis and fluorescence spectroscopy. The copolymers are amorphous and show excellent solubility in common organic solvents, such as chloroform. Thermogrametric analysis of the copolymers revealed that they have good stability with the onset decomposition temperature above 330 °C. The fluorescence spectra of the copolymers in solid state film display blue light emitting properties with the maximum at 468 nm.