Quinoxaline-imidazolium receptors for unique sensing of pyrophosphate and acetate by charge transfer

N Jiten Singh; Eun Jin Jun; Kavitha Chellappan; Daniel Thangadurai; R Prakash Chandran; In-Chul Hwang; Juyoung Yoon; Kwang S Kim

doi:10.1021/ol062849b

Quinoxaline-imidazolium receptors for unique sensing of pyrophosphate and acetate by charge transfer

Org Lett. 2007 Feb 1;9(3):485-8. doi: 10.1021/ol062849b.

Authors

N Jiten Singh¹, Eun Jin Jun, Kavitha Chellappan, Daniel Thangadurai, R Prakash Chandran, In-Chul Hwang, Juyoung Yoon, Kwang S Kim

Affiliation

¹ Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, Pohang 790-784, Korea.

PMID: 17249793
DOI: 10.1021/ol062849b

Abstract

[structure: see text] Quinoxaline derivatives (1-4) bearing two imidazolium moieties are found to strongly bind anions and show unique charge-transfer fluorescent responses to pyrophosphate and acetate, whereas they show excimer formation with other anions. Anion-binding studies are investigated with fluorescence and 1H NMR analysis, single-crystal X-ray analysis, and theoretical calculations.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Acetates / chemistry*
Anions
Binding Sites
Biosensing Techniques / methods*
Crystallography, X-Ray
Diphosphates / chemistry*
Electron Transport
Fluorescence
Fluorescent Dyes / chemistry*
Imidazoles / chemistry*
Magnetic Resonance Spectroscopy
Quinoxalines / chemistry*
Spectrometry, Fluorescence
X-Rays

Substances

Acetates
Anions
Diphosphates
Fluorescent Dyes
Imidazoles
Quinoxalines