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中文摘要：
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.
英文摘要：
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 ＋ .
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