基于聚氟乙烯负载四芳基乙烯纳米纤维膜的爆炸物荧光检测

In this article, a series of poly(vinylidene fluoride-hexafluoropropylene) nanofibers doped with tetraphenylethene derivative (TPE-2pTPA) were fabricated through electrospinning, and their morphologies and photophysical properties were characterized. In fluorescent detection for nitro compounds, the prepared materials were highly sensitive to picric acid with very low detection limit of 10⁻¹⁷ g/mL in solution and quenching efficiency of 46.75%. Parallel experiments were conducted to detect the common nitro compounds and solvent, and the possible detection mechanism was proposed and discussed. This work provides an alternative and effective method to fabricate a kind of fluorescent nanofibers through simple doping fluorescent small molecule of TPE derivatives into polymer matrix toward the detection of picric acid with high sensitivity and selectivity.