Issue 12, 2001
From the journal:

New Journal of Chemistry

Selective blue emission from an HPBO–Li+ complex in alkaline media

Sherine O. Obarea  and  Catherine J. Murphy*a  

* Corresponding authors

a Department of Chemistry and Biochemistry, Graduate Science Research Center, University of South Carolina, 631 Sumter Street, Columbia, USA
E-mail: murphy@mail.chem.sc.edu
Fax: +1 803 777 9521
Tel: +1 803 777 3628

Abstract

2-(2-Hydroxyphenyl)benzoxazole (HPBO) exhibits enhanced fluorescence and specificity for Li+ compared to Na+ and K+, in an alkaline medium. The selectivity was observed in several organic solvents in the presence of bases such as pyridine, triethylamine and trimethylamine. HPBO–Li+ complex formation results in an intense blue emission readily observed by the naked eye under UV light. Spectroscopic titrations suggest that the structure of the complex is one in which two HPBO anionic ligands coordinate to one Li+, with a second Li+ as a counterion.

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Article information

DOI
https://doi.org/10.1039/B103562M
Article type
Paper
Submitted
19 Apr 2001
Accepted
13 Aug 2001
First published
07 Dec 2001

New J. Chem., 2001,25, 1600-1604

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Selective blue emission from an HPBO–Li+ complex in alkaline media

S. O. Obare and C. J. Murphy, New J. Chem., 2001, 25, 1600 DOI: 10.1039/B103562M

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