Two Sensitive Fluorescent BOPIM Probes with Tunable TICT Character for Low-Level Water Detection in Organic Solvents

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• 作者：Ping Shen ; Min Li ; Chunlin Liu ; Wei Yang ; Sen Liu…
• 关键词：BOPIMs ; Twisted intra ; molecular charge transfer (TICT) ; Fluorescent sensor ; Water determination ; Solvent
• 刊名：Journal of Fluorescence
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：26
• 期：1
• 页码：363-369
• 全文大小：988 KB
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• 作者单位：Ping Shen (1)
  Min Li (1)
  Chunlin Liu (1)
  Wei Yang (1)
  Sen Liu (1)
  Changying Yang (1)
  
  1. College of Biology and Pharmaceutical Science, Three Gorges University, Yichang, 443002, People’s Republic of China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Biomedicine
  Biophysics and Biomedical Physics
  Biotechnology
  Biochemistry
  Analytical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4994

文摘

Two novel Boron-fluorine derivatives bearing dimethylamino moieties, BOPIM-1 and BOPIM-2, were proposed as sensitive fluorescent sensors for low-level water quantification in organic solvents. Two BOPIMs exhibit typical phenomenon for an emission from a twisted intra-molecular charge transfer (TICT) state, the emission red shift and intensity weakening with solvent polarity. Introduction of trace amount of water to solvent resulted in fluorescent quenching, accompanied by the red shift of the emission, which was attributed to the formation of TICT excitation of BOPIMs by hydrolysis. A quantification method to detect water content was developed, described by a linear equation \( \lg \frac{I}{I_0} \) vs. lg φ _w in the range of φ _w (volume fraction of water) 0.001~0.01, 0.01~0.1, respectively. The experiment results of determination of water in real 1, 4-dioxane (Diox) samples proved that this method can be used in practical application. Keywords BOPIMs Twisted intra-molecular charge transfer (TICT) Fluorescent sensor Water determination Solvent