材料科学
共价有机骨架
邻苯二甲酸
检出限
表面改性
邻苯二甲酸盐
化学工程
共价键
纳米技术
色谱法
有机化学
复合材料
化学
多孔性
工程类
作者
Yinghua Yan,Yujie Lu,Baichun Wang,Yiqian Gao,Lingling Zhao,Hongze Liang,Dapeng Wu
标识
DOI:10.1021/acsami.8b08934
摘要
The development of covalent organic framework (COF)-derived materials with additional functions and applications is highly desired. In this work, a unique COF-functionalized hydrophilic magnetic nanosphere (Fe3O4@PDA@TbBd) with Fe3O4 as a magnetic core, polydopamine (PDA) as a hydrophilic middle layer, and TbBd as an outer COF shell was facilely prepared as a novel hydrophilic platform for efficient detection of phthalic acid esters (PAEs). The resultant Fe3O4@PDA@TbBd nanosphere displayed strong magnetic response, high surface area, and good hydrophilicity. Accordingly, the newly synthesized COF exhibited great potential in phthalate analysis with a wide linearity (50-8000 ng/mL), good recovery (92.3-98.9%), a low limit of detection (0.0025-0.01 ng/mL), and a small relative standard deviation (for intraday less than 4.6% and for interday less than 6.8%). More excitingly, the new COF was applied to analyze nine PAEs in the human plasma sample. This work opens up new avenues for the development and application of functionalized COF-derived materials.
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