کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1389163 982848 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A sugar-aza-crown ether-based fluorescent sensor for Cu2+ and Hg2+ ions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
A sugar-aza-crown ether-based fluorescent sensor for Cu2+ and Hg2+ ions
چکیده انگلیسی

A sugar-aza-crown ether (SAC)-based fluorescent sensor 4 was prepared. It contains a pyrene as the fluorophore and its fluoroionophoric properties toward transition metal ions were investigated. Chemosensor 4 exhibits highly selective recognition toward Cu2+ and Hg2+ ions among a series of tested metal ions in methanol solution. The association constants for 4*Cu2+ and 4*Hg2+ in methanol solution were calculated to be 7.4 × 101 M−1 and 4.4 × 103 M−1, respectively. Chemosensor 4 formed complexes with the Cu2+ or Hg2+ ion at a 1:1 ligand-to-metal ratio with a detection limit of 1.3 × 10−4 M Cu2+ and 1.26 × 10−5 M Hg2+, respectively.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Research - Volume 346, Issue 7, 15 May 2011, Pages 978–981
نویسندگان
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