کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1308181 975164 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A selective phosphorescent chemodosimeter for mercury ion
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
A selective phosphorescent chemodosimeter for mercury ion
چکیده انگلیسی

The synthesis and crystal structure of an anionic phosphorescent iridium complex TBA[Ir(dfppy)2(NCS)2] (1) were reported. 1 can selectively detect Hg2+ with the help of UV–Vis absorption and emission spectra titration. In the presence of Hg2+, the obvious decrease of the luminescence intensity at 475 nm was investigated, which could be observed by the naked eyes. The phosphorescence quantum efficiency in CH3CN solution changed from 0.07 to 0.00085. No obvious spectra changes were observed upon addition of a large excess of other transition metals. Due to its strong thiophilic affinity, the special chemical reaction induced by Hg2+ is responsible for the significant change of absorption and luminescence spectra, which is confirmed by ESI-MS.

An anionic phosphorescent iridium complex has been demonstrated to act as a phosphorescent turn-off type chemodosimeter via a special chemical reaction induced by Hg2+.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 363, Issue 8, 5 May 2010, Pages 1755–1759
نویسندگان
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