ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

A naked-eye, selective and sensitive chemosensor for fluoride ion

Puhui Xie, Fengqi Guo, Weifeng Wang, and Xiyang Liu

College of Sciences, Henan Agricultural University, Zhengzhou, 450002 China

E-mail: pxie2007@yahoo.com.cn

Abstract: Effect of the addition of six different anions on the absorption and fluorescence spectra of acridine yellow G (AYG) was examined. Only the F⁻ anion could induce a visible color change observable with naked eye and a strong fluorescence quenching with K _SV of 8.3 × 10⁴ mol⁻¹ L in CH₃CN solutions. Calculated results of the interaction between the F⁻ anion and acridine yellow G using the B3LYP/6-31G(d) program showed that the intermolecular charge transfer through the formation of an H-bond between AYG and F⁻ is an essential sensor mechanism.

Keywords: fluoride ion - chemosensor - acridine yellow G - hydrogen bonding

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-010-0060-4

Chemical Papers 64 (6) 723–728 (2010)