کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5187156 1381122 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cationic conjugated polyelectrolyte-based fluorometric detection of copper(II) ions in aqueous solution
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Cationic conjugated polyelectrolyte-based fluorometric detection of copper(II) ions in aqueous solution
چکیده انگلیسی

A series of water-soluble cationic polyfluorene copolymer containing 2,2′-bipyridine moieties (PFP-P1-3) in the backbone were designed and synthesized as the fluorescent probes for Cu2+ ions. In the absence of the Cu2+ ion, the PFP-P2 exhibits strong fluorescence emission in aqueous solution. Upon adding the Cu2+ ion, the PFP-P2 coordinates to Cu2+ ions through weak N⋯Cu interactions, and its fluorescence is efficiently quenched by the Cu2+ ion with a Stern-Volmer constant (Ksv) of 1.44 × 107 M−1. The new method has high sensitivity with a detection limit of 20 nM. The minor interference from other heavy metal ions clearly shows that the PFP-P2 can be used as the Cu2+ ion probe with good selectivity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 49, Issue 11, 27 May 2008, Pages 2698-2703
نویسندگان
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