A 1,2,3-triazolyl based conjugated microporous polymer for sensitive detection of p-nitroaniline and Au nanoparticle immobilization

作者：Wei, Feng; Cai, Xinyi; Nie, Junqi^*; Wang, Feiyi; Lu, Cuifen; Yang, Guichun; Chen, Zuxing; Ma, Chao; Zhang, Yuexing^*

来源：Polymer Chemistry, 2018, 9(27): 3832-3839.

DOI：10.1039/c8py00702k

• POROUS-ORGANIC POLYMERS
• ULTRAFINE PALLADIUM NANOPARTICLES
• SUPPORTED GOLD NANOPARTICLES
• CATALYTIC-ACTIVITY
• NITROAROMATIC EXPLOSIVES
• CLICK CHEMISTRY
• FE3+ IONS
• FRAMEWORK
• REDUCTION
• SHELL

A 1,2,3-triazolyl based fluorescent conjugated microporous polymer PTPTB was synthesized through FeCl3 promoted oxidative coupling of 1,3,5-tris(1-(3,5-di(thiophen-2-yl)phenyl)-1H-1,2,3-triazol-4-yl)benzene. The resulting product has a BET surface area of 808.6 m(2) g(-1) and exhibits a strong emissive peak centered at 525 nm upon excitation at 417 nm in DMF. As a chemical sensor, PTPTB showed good fluorescence sensing ability for p-nitroaniline (p-NA) with a K-sv of 7.08 x 10(4) M-1 and a detection limit of 4.2 x 10(-6) M. The electron-rich polymer was further employed to load Au nanoparticles (NPs). The formed Au/PTPTB composite showed superior catalytic activity in the catalytic reduction of p-nitrophenol (p-NP) to p-aminophenol (p-AP) and the rate constant was obtained to be 0.812 min(-1). Moreover, the catalyst can be readily recovered and reused for six runs without obvious loss of its activity.

• 出版日期2018-7-21
• 单位湖北大学