Magnetic Relaxation Switch Detecting Boric Acid or Borate Ester through One-Pot Synthesized Poly(vinyl alcohol) Functionalized Nanomagnetic Iron Oxide.
Magnetic Relaxation Switch Detecting Boric Acid or Borate Ester through One-Pot Synthesized Poly(vinyl alcohol) Functionalized Nanomagnetic Iron Oxide.
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通过一锅合成聚（乙烯醇）功能化纳米磁性氧化铁检测硼酸或硼酸酯的磁弛豫开关。
DOI：
10.1021/acsami.5b04863
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发表时间：
2015-07
期刊：
影响因子：
--
通讯作者：
Wu, Zhengyan
中科院分区：
文献类型：
--
作者：
Yao, Jianming;Cai, Dongqing;Cheng, Zhiliang;Wu, Zhengyan
我们开发了一种基于聚乙烯醇功能化纳米磁性氧化铁（PVA@NMIO）颗粒的高效磁弛豫开关（MRS）系统，用于硼酸或硼酸酯（BA/BE）的检测。结果发现，BA/BE的添加诱导PVA@NMIO颗粒的聚集，导致磁共振测量中T2弛豫时间的可测量的变化。BA/BE中的缺电子硼原子通过共价键与PVA的羟基结合，导致PVA@NMIO粒子的聚集。该检测体系对BA/BE具有良好的选择性、高灵敏度和快速检测能力。因此，该系统在BA/BE检测中具有广阔的应用前景。
We developed a highly efficient magnetic relaxation switch (MRS) system based on poly(vinyl alcohol) functionalized nanomagnetic iron oxide (PVA@NMIO) particles for the detection of boric acid or borate ester (BA/BE). It was found that the addition of BA/BE induced the aggregation of PVA@NMIO particles, resulting in a measurable change in the T2 relaxation time in magnetic resonance measurements. The main mechanism was proposed that the electron-deficient boron atoms of BA/BE caused the aggregation of PVA@NMIO particles through covalent binding to the hydroxyl groups of PVA. This novel detection system displayed excellent selectivity, high sensitivity, and rapid detection for BA/BE. Thus, this system may provide a great application prospect for detection of BA/BE.
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