应用化学 ›› 2011, Vol. 28 ›› Issue (11): 1292-1297.DOI: 10.3724/SP.J.1095.2011.00718

• 研究论文 • 上一篇    下一篇

改进的罗丹明类钯离子荧光分子探针

樊江莉*,芦静,李宏林,刘晓健,朱浩,彭孝军   

  1. (大连理工大学精细化工国家重点实验室 大连 116024)
  • 收稿日期:2010-12-03 修回日期:2011-03-21 出版日期:2011-11-10 发布日期:2011-11-10
  • 通讯作者: 樊江莉,副教授; Tel/Fax:0411-84986306; E-mail:fanjl@dlut.edu.cn; 研究方向:荧光染料,荧光探针
  • 基金资助:
    国家自然科学基金资助项目(21076032),中央高等基本科研业务专项资金项目(DUT10LK05)

An Improved Fluorescence-enhanced Pd2+ Probe Derived from Rhodamine Fluorophore

FAN Jiangli*, LU Jing, LI Honglin, LIU Xiaojian, ZHU Hao, PENG Xiaojun   

  1. (State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116024)
  • Received:2010-12-03 Revised:2011-03-21 Published:2011-11-10 Online:2011-11-10
  • Contact: li

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,其荧光强度增强约40倍,并使检测时间缩短至约16 min。 探针RPd5对Pd2+的响应灵敏,最低检出限为2.31×10-6 mol/L,可以在较宽pH值范围内特别是近中性pH值环境下有效检测Pd2+。 RPd5可以实现对Pd2+以比色及荧光2种途径的可视化识别,并可应用于土壤、池塘水等实际样品中痕量Pd2+的检测。 RPd5还可制成试纸用于纯净水中Pd2+检测。

关键词: 荧光探针, 罗丹明, 荧光增强, 钯离子, 炔丙基

Abstract:

A new fluorescence-enhanced Pd2+ probe RPd5 was synthesized which shows both fluorescent and colorimetric responses to Pd2+ within 16 minutes. The fluorescent intensity was enhanced 40 times. 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 mol/L suggesting its high sensitivity for Pd2+ detection. Proof-of-concept experiments demonstrate its potential application for Pd2+ detection in real soil and water samples. Additionally, RPd5 can be loaded as test paper for Pd2+ evaluation in the clean water solution.

Key words: fluorescence probe, rhodamine, fluorescence-enhanced, Pd2+, propargyl group

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