苦味酸
纳米颗粒
共价键
共价有机骨架
材料科学
多孔性
三聚氰胺
选择性
纳米技术
化学
三硝基甲苯
纳米孔
荧光
化学工程
爆炸物
有机化学
催化作用
物理
量子力学
工程类
复合材料
作者
Wang Zhang,Ling-Guang Qiu,Yupeng Yuan,Anjian Xie,Junfa Zhu
标识
DOI:10.1016/j.jhazmat.2012.04.025
摘要
Covalent organic frameworks (COFs) are a new generation of porous materials constructed from light elements linked by strong covalent bonds. Herein we present rapid preparation of highly fluorescent nanoparticles of a new type of COF, i.e. melamine-based porous polymeric network SNW-1, by a microwave-assisted synthesis route. Although the synthesis of SNW-1 has to be carried out at 180 °C for 3 d under conventional reflux conditions, SNW-1 nanoparticles could be obtained in 6 h by using such a microwave-assisted method. The results obtained have clearly demonstrated that microwave-assisted synthesis is a simple yet highly efficient approach to nanoscale COFs or other porous polymeric materials. Remarkably, the as-synthesized SNW-1 nanoparticles exhibit extremely high sensitivity and selectivity, as well as fast response to nitroaromatic explosives such as 2,4,6-trinitrotoluene (TNT), 2,4,6-trinitrophenylmethylnitramine (Tetryl) and picric acid (PA) without interference by common organic solvents, which is due to the nanoscaled size and unique hierarchical porosity of such fluorescence-based sensing material.
科研通智能强力驱动
Strongly Powered by AbleSci AI