Issue 21, 2011
From the journal:

Chemical Communications

Cyclo[2]benzimidazole: luminescence turn-on sensing of anions†‡

Yael Abraham,a   Husein Salman,a   Kinga Suwinskab  and  Yoav Eichen*a  

* Corresponding authors

a Schulich Faculty of Chemistry, Technion – Israel Institute of Technology, Technion City, 32000 Haifa, Israel
E-mail: chryoav@tx.technion.ac.il
Fax: +927-4-8295307
Tel: +927-4-8293708

b Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, PL-01 224 Warszawa, Poland

Abstract

Cyclo[2]benzimidazole is a new host for anions that turns on its luminescence up to 150 fold upon binding. Photoexcited cyclo[2]benzimidazole undergoes an efficient non-radiative deactivation through an excited-state intramolecular proton-transfer (ESIPT) mechanism. Upon binding an anion, the ESIPT pathway is blocked, resulting in an increase in the luminescence efficiency.

Graphical abstract: Cyclo[2]benzimidazole: luminescence turn-on sensing of anions

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Article information

DOI
https://doi.org/10.1039/C1CC10995B
Article type
Communication
Submitted
20 Feb 2011
Accepted
17 Mar 2011
First published
05 Apr 2011

Chem. Commun., 2011,47, 6087-6089

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Cyclo[2]benzimidazole: luminescence turn-on sensing of anions

Y. Abraham, H. Salman, K. Suwinska and Y. Eichen, Chem. Commun., 2011, 47, 6087 DOI: 10.1039/C1CC10995B

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