间苯二甲酸-罗丹明B衍生物的合成及对Fe^(3+)的识别  

Synthesis of Rhodamine B Derivative of m-Phthalaldehyde and Research of Fe^(3+) Recognition

作　　者：贾治芳[1] 樊月琴[1] 王科伟[1] 孟双明[1] 郭永[1] 冯锋[1] 

机构地区：[1]山西大同大学化学与环境工程学院,山西大同037009

出　　处：《山西大同大学学报（自然科学版）》2014年第2期39-41,47,共4页Journal of Shanxi Datong University(Natural Science Edition)

基　　金：山西大同大学科学研究项目[2012Q18]

摘　　要：设计并合成了一种新型罗丹明B衍生物荧光分子探针RBA,研究了其光谱性能及对Fe3+的识别作用。结果表明:RBA在三羟甲基氨基甲烷—盐酸缓冲溶液和乙醇/水溶液形成的混合介质中,对Fe3+有高选择性、高灵敏性的荧光检测。在pH为7.0,553/576 nm条件下,随着Fe3+的浓度递增,RBA荧光强度呈现显著线性增强。其荧光增强主要是由于Fe3+诱导了分子中的酰胺闭环结构发生开环,导致分子结构的共轭程度增大。此外,RBA对其他常见金属离子Cu2+,Ag+,Zn2+,Cd2+,Hg2+,Na+,K+,Mg2+,Ba2+,Mn2+,Co2+,Ni2+和Pb2+等的硝酸盐溶液几乎不引起紫外-可见光谱和荧光光谱变化。A novel fluorescence molecular probe of RBA for Fe3＋ Rhodamine B derivative of m-Phthalaldehyde has been synthesized. We have studied its spectral properties and the recognition of iron ions. The results show that the RBA can be used in three hydroxymethyl aminomethane-hydrochloric acid buffer solution and ethanol aqueous solution to form mixed medium for Fe3＋ with high selectivity and high sensitivity fluorescence detection. At the condition of pH 7.0, 553/576 nm, as the concentration of Fe3＋ increasing,the RBA fluorescence intensity show significant linear increase. The fluorescence enhancement of RBA is mainly due to the molecule structure because of the Fe3＋ changing form closed-loop to open-loop, leading to the molecular structure of conjugated degree increas.es. In addition, the RBA to other nitrate solution of common metal ions, for example, Cu2＋, Ag＋, Zn2＋, Cd2＋, Hg2＋, Na＋, K＋, Mg2＋, Ba2＋,Mn2＋, Co2＋, Ni2＋and Pb2＋ show almost no changes with ultraviolet-visible spectrum and fluorescence spectrum.

关 键 词：罗丹明B衍生物 FE^3+ 荧光分子探针 

分 类 号：TQ560.7[化学工程—炸药化工] O626[理学—有机化学]