کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5270271 | 1385412 | 2014 | 7 صفحه PDF | دانلود رایگان |

This Letter aimed to develop an efficient method for the determination of cyanide ion (CNâ). A novel colorimetric chemosensor 4-[(1E)-2-(4-hydroxyphenyl)ethenyl]-1-allylpyridinium bromide (HPEAPB) was synthesized. HPEAPB displayed good selectivity toward CNâ over other competing anions in ethanol. A color change from yellow to red was immediately observed upon the addition of CNâ and the limit of detection (LOD) was 3.4 Ã 10â6 mol Lâ1. The sensing mechanism was discussed by UV-vis, 1H NMR titration, and a comparison study. Colorimetric test paper for CNâ was prepared by attaching HPEAPB to a chromatography paper, which could be used to detect CNâ in environmental samples as simply as a pH-indicator paper for pH value. The LOD of the test paper for CNâ was 2.0 Ã 10â4 mol Lâ1. This detection method for CNâ has potential applications in cyanide ion containing fields by combination of rapid and real-time advantages.
Journal: Tetrahedron Letters - Volume 55, Issue 19, 7 May 2014, Pages 3017-3023