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Poly{tris[4-(2-Thienyl)phenyl]amine} fluorescent conjugated microporous polymer for selectively sensing picric acid
Sensors and Actuators B: Chemical ( IF 8.0 ) Pub Date : 2017-01-03 , DOI: 10.1016/j.snb.2017.01.005
Tongmou Geng , Zongming Zhu , Xie Wang , Hongyu Xia , Yu Wang , Dengkun Li

Two thiophene-based and carbazole-based conjugated microporous polymers (PTPATTh and PTPATCz) with triphenylamine core structural monomers were synthesized via straight forward anhydrous ferric chloride oxidative coupling polymerization. We first explored the fluorescent sensing performance of thienyl CMPs for picric acid (PA) and investigated comparatively the porosity and fluorescence sensing property for PA/p-nitrophenol (NP). Thanks to the propeller-like structure, high porosity, extended π-conjugation and electron-rich characteristics, the both CMPs exhibited strong fluorescent emission properties and worked as fluorescent chemosensors toward electron-deficient nitroaromatic analytes. The suspension of PTPATTh and PTPATCz given rise to the high luminescence, and showed a white and yellow emission in both THF and DOX excited under 365 nm using a UV lamp, respectively. Though BET surface area values and response speed of PTPATTh (594 m2 g−1) are lower than that of PTPATCz (894 m2 g−1), PTPATTh display higher selectivity for tracing PA than PTPATCz in DOX and THF. In short, the PTPATTh may be a new kind of material for detecting PA.



中文翻译:

用于选择性检测苦味酸的聚{三[4-(2-噻吩基)苯基]胺}荧光共轭微孔聚合物

通过直接无水氯化铁氧化偶联聚合,合成了两种具有三苯胺核心结构单体的噻吩和咔唑共轭微孔聚合物(PTPATTh和PTPATCz)。我们首先探讨了噻吩基CMP对苦味酸(PA)的荧光传感性能,并比较了对PA /对硝基苯酚(NP)的孔隙率和荧光传感性能。得益于螺旋桨状结构,高孔隙率,扩展的π共轭和富电子特性,这两种CMP均显示出强大的荧光发射特性,并用作针对缺电子硝基芳香族分析物的荧光化学传感器。PTPATTh和PTPATCz的悬浮导致了高发光,并显示在365 nm处用紫外灯激发的THF和DOX中分别发出白色和黄色光。虽然BET表面积值和PTPATTh(594 m2  g -1)低于PTPATCz(894 m 2  g -1),PTPATTh在DOX和THF中显示出比PTPATCz更高的示踪PA选择性。简而言之,PTPATh可能是检测PA的一种新型材料。

更新日期:2017-01-03
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