Issue 43, 2013
From the journal:

Dalton Transactions

A single molecule that acts as a fluorescence sensor for zinc and cadmium and a colorimetric sensor for cobalt†

Eun Joo Song,a   Juhye Kang,a   Ga Rim You,a   Gyeong Jin Park,a   Youngmee Kim,b   Sung-Jin Kim,b   Cheal Kim*a  and  Roger G. Harrison*c  

* Corresponding authors

a Department of Fine Chemistry, Seoul National University of Science & Technology, Seoul 139-743, Korea
E-mail: chealkim@seoultech.ac.kr

b Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Korea

c Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah, USA
E-mail: roger_harrison@byu.edu

Abstract

A new metal ion sensor that contains quinoline and pyridylaminophenol has been synthesized. In acetonitrile and in the presence of Zn2+, the sensor fluoresces. In contrast, in aqueous solutions the sensor fluoresces in the presence of Cd2+. The fluorescence of the molecule is selective for Zn2+ or Cd2+ and shows no fluorescence with other metal ions. The crystal structure of the Cd2+ complex shows coordination through the amide and phenol oxygens, as well as the amine nitrogen of the sensor. The sensor also acts as a colorimetric sensor for Co2+ by changing color from colorless to yellow. The color change is selective for Co2+ and is not observed with other metal ions. The unique combination of pyridine and phenol groups with quinoline results in the properties of this sensor.

Graphical abstract: A single molecule that acts as a fluorescence sensor for zinc and cadmium and a colorimetric sensor for cobalt

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Article information

DOI
https://doi.org/10.1039/C3DT51635K
Article type
Paper
Submitted
19 Jun 2013
Accepted
24 Aug 2013
First published
12 Sep 2013

Dalton Trans., 2013,42, 15514-15520

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A single molecule that acts as a fluorescence sensor for zinc and cadmium and a colorimetric sensor for cobalt

E. J. Song, J. Kang, G. R. You, G. J. Park, Y. Kim, S. Kim, C. Kim and R. G. Harrison, Dalton Trans., 2013, 42, 15514 DOI: 10.1039/C3DT51635K

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