An aggregation-induced emission enhancement fluorescent benzoxazine-derived macromolecule: catalyst-free synthesis and its preliminary application for the determination of aqueous picric acid

作者：Su, Yue; Shi, Wei^*; Chen, Xin; Zhao, Shiyu; Hui, Yonghai^*; Xie, Zhengfeng

来源：RSC Advances, 2016, 6(47): 41340-41347.

DOI：10.1039/c6ra06942h

• CLICK POLYMERIZATION
• SELECTIVE DETECTION
• SURFACE-PROPERTIES
• FILM FORMATION
• POLYBENZOXAZINE
• NANOPARTICLES
• CHEMOSENSOR
• EXPLOSIVES
• TEMPERATURE
• NANOFIBERS

A tetraphenylethene-containing fluorescent macromolecular benzoxazine derivative (TPE-BOZ) was synthesized via the Mannich reaction under catalyst -free conditions using 4,4'-(1,2-diphenylethene-1,2diyl)diphenol, poly(propylene glycol)-bis-(2-aminopropylether) and formaldehyde as the starting materials. TPE-BOZ displayed typical aggregation -induced emission enhancement characteristics in ethanol (a good solvent) and water (a poor solvent), which stemmed from the incorporation of tetraphenylethene moieties into its structure. The fluorescence of TPE-BOZ in a high water fraction medium (ethanol : water 1 : 9 v/v) was effectively quenched by the introduction of picric acid with a Stern-Volmer value (ks) of 1.134 x 107 M-1. The detection limit for picric acid by TPE-BOZ was 4.47 nM. The presence of other common nitrocompounds and solvent residuals did not significantly interfere with the recognition of picric acid by TPE-BOZ. TPE-BOZ can also be used as a solid-state probe to determine picric acid.

• 出版日期2016
• 单位新疆大学; 西南石油大学