罗丹明类钯离子荧光分子探针  

Rhodamine-Based Fluorescence Probe for Pd～(2+) Detection

作　　者：李宏林[1] 樊江莉[1] 刘晓健[1] 孙世国[1] 彭孝军[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,大连116012

出　　处：《高等学校化学学报》2010年第9期1725-1728,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20706008;20725621;20872012)资助

摘　　要：将烯丙基结构引入到罗丹明螺环中,合成了荧光增强型钯离子探针RPd4.RPd4表现出对Pd2+的专一选择性和对其它阳离子良好的抗干扰能力.探针荧光强度随着Pd2+的加入逐渐增强,并且在微摩尔级呈现良好的线性关系,通过拟合计算得到对Pd2+的检出限为0.51μmol/L.RPd4具有较低的pKa值(3.81±0.02),说明该探针可以在近中性pH范围内对Pd2+进行选择性识别.该探针还可以提供比色及荧光两种方式对Pd2+进行可视化检测.A new rhodamine-based derivative modified with allyl group,RPd4,was synthesized as fluorescence-enhanced probe with excellent selectivity for Pd2 ＋ and good anti-jamming ability over other cations. The fluorescence intensitiy was linearly proportional to the amount of Pd2 ＋ added in μmol/L level with a detection limit of 0. 51 μmol/L. With the pKa of 3. 81 ± 0. 02,it can be used for Pd2 ＋ detection in neutral pH range. The colorimetric and fluorimetric response between RPd4 and Pd2 ＋ can provide a convenient method for visual detection of Pd2 ＋ .

关 键 词：荧光探针 罗丹明 烯丙基 荧光增强 

分 类 号：O654[理学—分析化学]