用于羧酸根盐识别的选择性显色化学传感器。

A selective chromogenic chemosensor for carboxylate salt recognition.

机构信息

Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.

出版信息

Chem Commun (Camb). 2011 Apr 28;47(16):4745-7. doi: 10.1039/c0cc05537a. Epub 2011 Mar 15.

Abstract

A new heteroditopic chromogenic chemosensor bearing a crown ether substituted at the intraannular position with a nitrophenylthiourea moiety has been synthesized. The binding behavior of this sensor was investigated by (1)H NMR spectroscopy and UV-vis spectroscopy. The receptor binds in a cooperative fashion to both a potassium cation and a carboxylate anion whereas a sodium cation sequesters an anion from the anion-receptor complex. The binding events are confirmed by selective color changes of the chemosensor solution.

摘要

一种新型的杂位显色化学传感器，其冠醚部分在环内位置取代有硝基苯硫脲部分，已经被合成出来。通过 (1)H NMR 光谱和紫外可见光谱研究了该传感器的结合行为。该受体以协同的方式与钾阳离子和羧酸根阴离子结合，而钠离子则将阴离子从阴离子-受体复合物中隔离出来。这些结合事件通过化学传感器溶液的选择性颜色变化得到证实。