Two Sensitive Fluorescent BOPIM Probes with Tunable TICT Character for Low-Level Water Detection in Organic Solvents
Two Sensitive Fluorescent BOPIM Probes with Tunable TICT Character for Low-Level Water Detection in Organic Solvents
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DOI：
10.1007/s10895-015-1722-y
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发表时间：
2015-11
影响因子：
2.7
通讯作者：
Ping Shen;Min Li;Chunlin Liu;Wei Yang;Sen Liu;Changying Yang
中科院分区：
文献类型：
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作者：
Ping Shen;Min Li;Chunlin Liu;Wei Yang;Sen Liu;Changying Yang
提出了两种新的带有二甲氨基的硼氟衍生物BOPIM-1和BOPIM-2，作为有机溶剂中低含量水的灵敏荧光传感器。两种BOPIM均表现出典型的扭曲分子内电荷转移（TICT）态发光现象，发光强度随溶剂极性的变化而减弱，并发生红移。在溶剂中引入微量的水会导致荧光猝灭，并伴随着发射的红移，这归因于BOPIM通过水解形成TICT激发。建立了一种定量测定含水量的方法，其线性方程为：lgφ分别在φw（水的体积分数）0.001~0.01，0.01~0.1范围内。对真实的1，4-二氧六环中水分的测定结果表明，该方法可用于实际应用。
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 equationvs. lgφwin the range ofφw(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.