罗丹明类钯离子荧光分子探针
首发时间:2011-02-15
摘要:用罗丹明B与水合肼反应生成的中间体与溴丙炔反应合成了荧光增强型Pd2+检测用探针RPd5。与Pd2+结合后,RPd5的吸收及荧光强度明显增强,其荧光强度增强大约40倍,并使检测时间缩短到16min左右。探针对Pd2+的响应灵敏,最低检出限为2.31×10-6 M,并且可以在较宽pH范围内特别是近中性pH环境下有效检测Pd2+。RPd5可以实现对Pd2+以比色及荧光两种途径进行可视化检测,还可制成检测Pd2+试纸。
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Fluorescence-enhanced Pd2+ Probe Derived from Rhodamine Fluorophore
Abstract:A new fluorescence-enhanced Pd2+ probe RPd5 was synthesized which shows both fluorescent and colorimetric responses to Pd2+ within 16 minutes. With a pKa value of 3.96±0.01, it can detect Pd2+ in a wide pH range, especially in the neutral pH environment. RPd5 has the detection limit of 2.31×10-6 M that reveals the high sensitivity for Pd2+ detection. Additionally, RPd5 can be loaded as test paper for Pd2+ evaluation in 100% water solution.
Keywords: luorescence probe rhodamine fluorescence-enhanced Pd2+ propargyl group
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No.4406912561204129****
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