Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Copillar[5]arene-rhodamine conjugate as a selective sensor for Hg2+ ions

Author affiliations

Abstract

A new copillar[5]arene coupled rhodamine probe 1 has been designed and synthesized. The molecular probe shows selective sensing of Hg2+ ions over a series of metal ions in CH3CN by exhibiting a color change of the solution as well as ‘turn-on’ fluorescence. Compound 1 also shows interaction with Cu2+ by exhibiting a different color and spectral changes. Furthermore, Hg2+ has been differentiated from Cu2+ by using tetrabutylammonium iodide (TBAI). While in the presence of TBAI, the reddish violet color of the 1–Cu2+ complex becomes colorless with the regeneration of the original electronic spectrum of 1; under identical conditions, the pink color of the 1-Hg2+ complex is not changed in the presence of TBAI. Model compound 2 with no pillar[5]arene moiety has been synthesized to validate the role of pillararene in the selectivity of metal ion sensing. Importantly, compound 2 does not show any selectivity in sensing under identical conditions. Complexation studies are performed by using UV-vis, fluorescence, FTIR and NMR spectroscopic methods.

Graphical abstract: Copillar[5]arene-rhodamine conjugate as a selective sensor for Hg2+ ions

Back to tab navigation

Supplementary files

Article information


Submitted
18 Dec 2019
Accepted
17 Mar 2020
First published
18 Mar 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Copillar[5]arene-rhodamine conjugate as a selective sensor for Hg2+ ions

S. G. Roy, S. Mondal and K. Ghosh, New J. Chem., 2020, Advance Article , DOI: 10.1039/C9NJ06264E

Social activity

Search articles by author

Spotlight

Advertisements