کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
176566 | 458947 | 2012 | 7 صفحه PDF | دانلود رایگان |
A new chemodosimeter for detection of Hg(II) ions based on boron-dipyrromethene (BODIPY) is developed. The 3-(pyridine-4-thione)BODIPY was synthesized in high yield by treating 3-(pyridine-4-one)BODIPY with Lawesson's reagent. The 3-(pyridine-4-thione) BODIPY was confirmed by HR-MS mass, 1H, 1H–1H COSY, 19F and 11B NMR techniques. In 1H NMR, the protons which are adjacent to sulfur in 3-(pyridine-4-thione)BODIPY showed ∼1 ppm downfield shift compared to equivalent protons in 3-(pyridine-4-one)BODIPY. The absorption and electrochemical properties experienced slight changes in 3-(pyridine-4-thione)BODIPY compared to 3-(pyridine-4-one)BODIPY. The compound 3-(pyridine-4-thione)BODIPY is very weakly fluorescent compared to 3-(pyridine-4-one)BODIPY. Furthermore, 3-(pyridine-4-thione)BODIPY can be used as an exclusive chemodosimeter for Hg2+ ion as it shows significant enhancement in the fluorescence intensity and a dramatic visible color change from pink to fluorescent green in the presence of Hg(II) ions.
The 3-(pyridine-4-thione)BODIPY was synthesized and showed it as a selective chemodosimeter for Hg2+ ions detection.Figure optionsDownload as PowerPoint slideHighlights
► 3-(Pyridine-4-thione)BODIPY has been synthesized using 3-(pyridine-4-one)BODIPY.
► 3-(Pyridine-4-thione)BODIPY show different electronic properties.
► 3-(Pyridine-4-thione)BODIPY is non-fluorescent.
► 3-(Pyridine-4-thione)BODIPY can be used as chemodosimeter for Hg(II) ion detection.
► Non-fluorescent thione BODIPY changes to fluorescent upon addition of Hg(II) ion.
Journal: Dyes and Pigments - Volume 95, Issue 1, October 2012, Pages 89–95