Synthesis and evaluation of arylfuryl-bis(indolyl)methanes as selective chromogenic and fluorogenic ratiometric receptors for mercury ion in aqueous solution
作者:Rosa M.F. Batista、Susana P.G. Costa、Regina M.P. Silva、Nuno E.M. Lima、M.Manuela M. Raposo
DOI:10.1016/j.dyepig.2013.11.008
日期:2014.3
7:3) for the various receptors, with an easily detectable colour change from colourless to purple and also through a fluorescence quenching, making these compounds suitable for dual chromo- and fluorogenic ratiometric sensing of Hg2+. The binding stoichiometry between the receptors and Hg2+ was found to be 1:1. The binding process was also followed by 1H NMR titrations which corroborated the previous
通过简单,温和的硫酸氢盐催化反应,用呋喃醛用亲电子取代吲哚,以高收率制得了一系列芳基呋喃基双(吲哚基)甲烷衍生物,并通过分光光度法和荧光分光光度法研究了作为过渡金属阳离子的化学传感器。在有机含水混合物(CH 3 CN / H 2 O,7:3)中,对于各种受体,Hg 2+的选择性识别实现了从无色到紫色的容易检测到的颜色变化,并且还通过荧光猝灭,使得这些化合物成为可能。适用于Hg 2+的双显色和荧光比例感测。受体与Hg 2+之间的结合化学计量被发现是1:1。在结合过程之后还进行了1 H NMR滴定,这证实了先前的发现。