Direct and ultrasensitive fluorescence detection of PETN vapor based on a fuorene-dimer probe via a synergic backbone and side-chain tuning†,Analytical Methods

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Direct and ultrasensitive fluorescence detection of PETN vapor based on a fuorene-dimer probe via a synergic backbone and side-chain tuning†
Analytical Methods ( IF 2.7 ) Pub Date : 2018-04-26 00:00:00 , DOI: 10.1039/c8ay00726h
Ao Liu _{1,

2,

3,

4,

5} , Huan Liu _{1,

2,

3,

4,

5} , Xin Peng _{1,

2,

3,

4,

5} , Jinlan Jia _{1,

2,

3,

4,

5} , Yanyan Fu _{1,

2,

3,

4,

5} , Qingguo He _{1,

2,

3,

4,

5} , Huimin Cao _{1,

2,

3,

4,

5} , Jiangong Cheng _{1,

2,

3,

4,

5}

Affiliation

Pentaerythritol tetranitrate (PETN), a major component in plastic explosives, poses a major threat to public safety and has extremely low saturated vapor pressure (7.17 ppt) and can hardly be detected directly. Two novel fluorescent sensing materials (6TPA-2FT and 6Py-2FT) were synthesized via Suzuki and Click reactions for a direct detection of PETN explosive vapor. The high binding affinity between the nitro group of PETN and the sensing film of 6TPA-2FT results in rapid and dramatic quenching of its fluorescence. The detection limit of 6TPA-2FT was as low as 0.056 ppt. The sensing mechanism was verified by various experimental characterization, including photophysical properties, SEM, IR, and quantum chemical calculations. For practical application, the sensing film of 6TPA-2FT was successfully used to detect PETN hidden in a bag using only naked eye detection under UV excitation without using any other complicated instrument, indicating its potential application for the detection of PETN vapors.

中文翻译：

通过协同主链和侧链调节，基于富勒二聚体探针对PETN蒸气进行直接和超灵敏的荧光检测†

季戊四醇四硝酸酯（PETN）是塑料炸药的主要成分，对公共安全构成重大威胁，饱和蒸气压极低（7.17 ppt），几乎无法直接检测到。两种新颖的荧光传感材料（6TPA-2FT和6Py-2FT）通过Suzuki和Click反应可直接检测PETN爆炸性蒸气。PETN的硝基与6TPA-2FT的传感膜之间的高结合亲和力导致其荧光快速而戏剧性地猝灭。6TPA-2FT的检出限低至0.056 ppt。通过各种实验表征，包括光物理性质，SEM，IR和量子化学计算，验证了感应机制。在实际应用中，仅使用紫外激发下的肉眼检测而不使用任何其他复杂的仪器，成功地将6TPA-2FT传感膜用于检测隐藏在袋子中的PETN，这表明其在检测PETN蒸气方面的潜在应用。

更新日期：2018-04-26

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