摘要:
A colorimetric chemosensor TBS-NA, 4-(tert-butyldimethylsilyloxy)-N-butyl-naphthalimide was designed and synthesized. Addition of fluoride ion to a CH3CN solution of TBS-NA can result in an obvious color change (from colorless to yellow) and UV-Vis absorption spectral change in a short time. This indicated that TBS-NA had highly selectivity for fluoride detection over other anions, such as Cl-, Br-, I-, HSO4-, ClO4- and AcO- in CH3CN solutions, and the selectively detection was due to the selective cleavage of Si-O bond in TBS-NA by fluoride. The detection limit was calculated to be 0.59 mu M. (C) 2011 Elsevier Ltd. All rights reserved.