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[求助补充材料]
 Synthesis of crystallinity covalent organic framework and its ratiometric fluorescent detection of trace water 结晶性共价有机骨架的合成及其比率荧光法检测痕量水
相关领域
结晶度
荧光
共价键
跟踪（心理语言学）
化学
环境化学
有机化学
结晶学
语言学
量子力学
物理
哲学
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| 其它 | The sensitive and accurate detection of trace water in solid food products is of great significance for the protection of their stability and quality. Herein, a novel crystalline COF TAPT-BPTA with fluorescence was prepared via Schiff-base condensation reaction between 4,4′,4′′-(1,3,5-Triazine-2,4,6-triyl)trianiline (TAPT) and 2,5-bis(2propyn-1-yloxy)-1,4-benzenedicarboxaldehyde (BPTA). The fluorescence of TAPT-BPTA was sensitive to trace water and can be quenched due to the disruption of intermolecular charge transfer (ICT) process by water molecules. Hence, COF TAPT-BPTA was successfully applied for sensing of trace water in common organic solvents including acetone, acetonitrile, THF and DMF with rapid response (less than 3 s) and good sensing ranges (0.05–20 v/v% for acetone, 0.10–25 v/v% for THF, 0.05–15 v/v% for ACN, and 0.05–10 v/v% for DMF). The limit of detection of water in acetone, ACN, DMF, THF were 0.0585%, 0.0631%, 0.0185% and 0.0718% (v/ v), respectively. |
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