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 + .
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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
关键词
荧光探针
罗丹明
烯丙基
荧光增强
Fluorescence probe
Rhodamine
Allyl
Fluorescence-enhanced