کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5398339 | 1505882 | 2016 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Establishing the anion recognition correlation of the 2-(2-methoxyphenyl)-1H-imidazo [4, 5-f][1,10] phenanthroline and its Ru(bipy)22+ complex via fluorimetry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
2-(2-methoxyphenyl)-1H-imidazo [4, 5-f][1, 10] phenanthroline (1) and its Ru(bipy)22+ complex (2) were synthesized and the anion sensing properties of the two were well evaluated and compared by fluorescence titration experiments. Both 1 and 2 were fluorescent in DMSO solution and possessed an anion binding imidazole N-H site to interact with the anions. 1 did not exhibit any fluorescent changes with even most basic anions in DMSO solution but on introduction of Ru metal center via synthesis of its Ru(bipy)22+ complex (2), the N-H acidity enhanced appreciably and it could detect acetate even at very low concentrations (LOD=5.25Ã10â7). The fluorescence intensity of 2 was almost completely quenched and its fluorescent red orange color disappeared with the addition of acetate ions. The spatial arrangement of receptor 2 fits well for the triangular shape of AcOâ ion, hence making it the most preferred anion for binding. Both 1H NMR titrations and DFT computational calculations supported the deprotonation mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 179, November 2016, Pages 372-377
Journal: Journal of Luminescence - Volume 179, November 2016, Pages 372-377
نویسندگان
Priya Alreja, Navneet Kaur,