کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5398629 | 1505889 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Turn-on and reversible luminescent sensor for selective recognition of Al3+ using naphthol hydrazone
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Two ligands 1 and 2 have been synthesized for the selective fluorescent recognition of Al3+ ions in aqueous medium (DMSO 5% v/v, pH 7). The ligand 2 displayed dramatic increment of emission intensity with considerable red shift in the presence of Al3+ and it exhibited better sensitivity compared to 1. The quantum yields for 2 and 2-Al3+ were determined as 0.006 and 0.196 respectively. Job plot indicated a 1:1 stoichiometric binding of 2 with Al3+ and the association constant for 2-Al3+ was determined as 1.3Ã104Â Mâ1 by the Hill plot. The addition of Na2EDTA quenches the fluorescence of 2-Al3+ indicating that the ligand 2 is a reversible fluorescent chemosensor and it can detect submicromolar concentrations of Al3+. The crystal structure of 1 was obtained from single crystal X-ray diffractometry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 172, April 2016, Pages 124-130
Journal: Journal of Luminescence - Volume 172, April 2016, Pages 124-130
نویسندگان
Soma Mukherjee, Palash Mal, Helen Stoeckli-Evans,