A high-performance and simple method for rapid and simultaneous determination of dihydroxybenzene isomers
A high-performance and simple method for rapid and simultaneous determination of dihydroxybenzene isomers
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一种高效、简单的快速同时测定二羟基苯异构体的方法
DOI：
10.1039/c1an15945c
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发表时间：
2012-01-01
期刊：
影响因子：
4.2
通讯作者：
Lu, Xiaoquan
中科院分区：
文献类型：
--
作者：
Quan, Yanli;Xue, Zhonghua;Lu, Xiaoquan
基于5，10，15，20-四（4-羟基苯基）卟啉（THPP）功能化碳纳米管（CNTs）膜，提出了一种模拟色谱分离的新方法，利用氧化电位和电流的不同，实现了对苯二酚异构体的快速、同时检测。对苯二酚异构体的识别和分离机理进行了探讨，并通过紫外光谱和密度泛函理论进行了证实。结果表明，现有的苯二酚异构体的同时检测和分离方法主要是基于卟啉膜优先诱导3种异构体的氧化，而这种优先性在很大程度上取决于苯二酚与卟啉外围羟基和扩展π共轭环相互作用的不同倾向。最重要的是，卟啉功能化的碳纳米管膜允许形成明确的界面，并提供了一个有利的和高性能的平台，同时测定和分离的苯二酚异构体。
A novel idea on the basis of 5,10,15,20-tetrakis(4-hydroxyphenyl) porphyrin (THPP) functionalized carbon nanotubes (CNTs) film was developed to simulate the chromatographic separation, which was able to rapidly and simultaneously detect dihydroxybenzene isomers based on their different oxidation potentials and corresponding currents. The mechanism involved in the recognition and isolation of the dihydroxybenzene isomers was explored and confirmed by UV spectra and density functional theory. It was proven that the current method for simultaneously detecting and isolating dihydroxybenzene isomers was ascribed to the priority of porphyrin film to induce oxidation of the three kinds of isomers, and the priority depends to a large extent on the different tendencies of dihydroxybenzene to interact with the peripheral hydroxyl group and with the extended pi-conjugated ring of porphyrin. Most important of all, porphyrin functionalized CNTs film allows for the formation of well-defined interface and provides an advantageous and high-performance platform for the simultaneous determination and isolation of dihydroxybenzene isomers.