Hg2+-selective dual signaling probe based on a thio-functionalized rhodamine B hydroxamic acid

作者：Jeong Yong Ae; Choi Jiyoung; Chang Suk Kyu^*

来源：Tetrahedron Letters, 2015, 56(34): 4919-4922.

DOI：10.1016/j.tetlet.2015.06.085

• Hg2+ signaling
• Chromogenic probe
• Fluorogenic probe
• Rhodamine hydroxamic acid
• Thionation

A new Hg2+-selective signaling system based on a thio-functionalized rhodamine B hydroxamic acid was investigated. A thio-analogue of rhodamine B hydroxamic acid had a distinct Hg2+-selective signaling behavior in aqueous solution, whereas its parent hydroxamic acid was completely unreactive toward any metal ions. Selective chromogenic and fluorogenic signaling of Hg2+ the thio-functionalized rhodamine B hydroxamic acid in aqueous solution was possible with a detection limit of 1.0 x 10(-6) M. Hg2+ determination based on paper test strips was conducted as a practical application.

• 出版日期2015-8-19