水杨羟肟酸功能化聚苯乙烯的制备及其与Tb(Ⅲ)离子配合物的荧光发射特性初探

雷彩萍; 史小慧; 王洪静; 高保娇; 王蕊欣

水杨羟肟酸功能化聚苯乙烯的制备及其与Tb(Ⅲ)离子配合物的荧光发射特性初探

Preparation of Salicylichydroxamic Acid Functionalized Polystyrene and Fluorescence Character Preliminary Exploration of Its Complex with Tb(Ⅲ)

摘要

摘要: 凭借氯甲基化的聚苯乙烯（CMPS）与水杨羟肟酸（SHA）之间的Friedel-Crafts烷基化反应，使SHA键合在聚苯乙烯( PS) 的侧链上，制备了改性聚苯乙烯(SHA/PS)。再使SHA/PS 与Tb(Ⅲ) 离子配位，制得高分子-稀土配合物Tb(Ⅲ)-SHA/PS。采用红外光谱对其结构进行了表征，考察了影响SHA与CMPS之间Friedel-Crafts 烷基化反应的主要因素。结果表明，当催化剂SnCl4用量为0.06 mL，35 ℃反应18 h时，SHA/PS上SHA的键合率高达33.1%。Tb(Ⅲ)-SHA/PS配合物不仅具有与Tb(Ⅲ)离子相似的荧光光谱，而且SHA/PS配体对Tb(Ⅲ)离子产生了显著的Antenna效应，使其荧光强度大幅增强。

Abstract: Functional polystyrene (SHA/PS) bonded with salicylichydroxamic acid (SHA) ligand was prepared via Friedel-Crafts alkylation between SHA and chloromethylated polystyrene (CMPS). The polymer-rare earth complex, Tb(Ⅲ)-SHA/PS, was obtained by the coordination between SHA/PS and Tb(Ⅲ). The chemical structure of SHA/PS was characterized by FT-IR. The effects of main factors on Friedel-Crafts alkylation were investigated, and the reaction mechanism was discussed. Results showed that when the Friedel-Crafts alkylation was conducted with 0.06 mL of SnCl4 at 35 ℃for 18 h, the binding ratio of SHA was up to 33.1%. The prepared complex Tb(Ⅲ)-SHA/PS emitted the characteristic fluorescence of Tb(Ⅲ), furthermore, the intensity could be strongly sensitized by macromolecular ligand SHA/PS for the Antenna effect of SHA/PS on Tb(Ⅲ).

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