Selective fluorescence response and magnetic separation probe for 2,4,6-trinitrotoluene based on iron oxide magnetic nanoparticles
Selective fluorescence response and magnetic separation probe for 2,4,6-trinitrotoluene based on iron oxide magnetic nanoparticles
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基于氧化铁磁性纳米颗粒的2,4,6-三硝基甲苯选择性荧光响应和磁分离探针
DOI：
10.1007/s00216-013-6873-6
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发表时间：
2013-03
期刊：
影响因子：
--
通讯作者：
Jin Liu
中科院分区：
文献类型：
--
作者：
Feng Wang;Qun Shao;Jun Zhang;Jin Liu
尽管纳米材料和纳米技术发展迅速，但仍然需要开发新的基于纳米颗粒的技术，其具有成本效益、节省时间和环境友好性，并且易于操作和程序简单，用于目标分析物的测定。在本文中讨论的工作中，染料异硫氰酸荧光素（FITC）的共轭1，6-己二胺（HDA）-盖帽的氧化铁磁性纳米粒子（FITC-HDA Fe 3 O 4 MNP），并对产品进行了表征。Fe 3 O 4 MNP表面的HDA配体可以通过酸碱配对作用与2，4，6-三硝基甲苯（TNT）结合形成TNT阴离子。TNT阴离子的形成和捕获的TNT实质上影响FITC在Fe 3 O 4 MNP表面上的发射，导致在519 nm处的荧光猝灭。因此，一种新的FITC-HDA Fe 3 O 4 MNPs为基础的探针具有化学传感和磁分离已被构建。即FITC-HDA Fe 3 O 4 MNP具有高度选择性的荧光响应，并且能够通过猝灭FITC的发射和捕获水溶液中的TNT而将TNT与其他硝基芳香族化合物磁性分离。TNT浓度在0.05-1.5 μmol L（-1）范围内线性关系良好，检出限为37.2 nmol L（-1），相对标准偏差为4.7%（n = 7）。大约12%的TNT总量被捕获。该方法适用于水溶液中TNT的痕量检测和捕获。
Despite the rapid development of nanomaterials and nanotechnology, it is still desirable to develop novel nanoparticle-based techniques which are cost-effective, timesaving, and environment-friendly, and with ease of operation and procedural simplicity, for assay of target analytes. In the work discussed in this paper, the dye fluorescein isothiocyanate (FITC) was conjugated to 1,6-hexanediamine (HDA)-capped iron oxide magnetic nanoparticles (FITC-HDA Fe3O4 MNPs), and the product was characterized. HDA ligands on the surface of Fe3O4 MNPs can bind 2,4,6-trinitrotoluene (TNT) to form TNT anions by acid-base pairing interaction. Formation of TNT anions, and captured TNT substantially affect the emission of FITC on the surface of the Fe3O4 MNPs, resulting in quenching of the fluorescence at 519 nm. A novel FITC-HDA Fe3O4 MNPs-based probe featuring chemosensing and magnetic separation has therefore been constructed. i.e. FITC-HDA Fe3O4 MNPs had a highly selective fluorescence response and enabled magnetic separation of TNT from other nitroaromatic compounds by quenching of the emission of FITC and capture of TNT in aqueous solution. Very good linearity was observed for TNT concentrations in the range 0.05-1.5 μmol L(-1), with a detection limit of 37.2 nmol L(-1) and RSD of 4.7 % (n = 7). Approximately 12 % of the total amount of TNT was captured. The proposed methods are well-suited to trace detection and capture of TNT in aqueous solution.
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影响因子：
29.4
作者：
Kinsella, Joseph M.;Ananda, Shalini;Andrew, Jennifer S.;Grondek, Joel F.;Chien, Miao-Ping;Scadeng, Miriam;Gianneschi, Nathan C.;Ruoslahti, Erkki;Sailor, Michael J.
通讯作者：
Sailor, Michael J.
影响因子：
29.4
作者：
D. Vollath
通讯作者：
D. Vollath
DOI：
--
发表时间：
2020
期刊：
--
影响因子：
--
作者：
通讯作者：
--
磁性室温磷光多功能纳米复合材料作为化学传感器用于检测和光驱动酶模拟物用于降解 2,4,6-三硝基甲苯
影响因子：
--
作者：
Zou, Wen-Sheng;Yang, Jing;Yang, Ting-Ting;Hu, Xin;Lian, Hong-Zhen
通讯作者：
Lian, Hong-Zhen
影响因子：
6.2
作者：
Wen-sheng Zou;Jun-qin Qiao;Xin Hu;Xin Ge;H. Lian
通讯作者：
Wen-sheng Zou;Jun-qin Qiao;Xin Hu;Xin Ge;H. Lian