کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10560547 | 969736 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
“Off-On” based fluorescent chemosensor for Cu2+ in aqueous media and living cells
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: “Off-On” based fluorescent chemosensor for Cu2+ in aqueous media and living cells “Off-On” based fluorescent chemosensor for Cu2+ in aqueous media and living cells](/preview/png/10560547.png)
چکیده انگلیسی
A novel Cu2+-specific “off-on” fluorescent chemosensor of naphthalimide modified rhodamine B (naphthalimide modified rhodamine B chemosensor, NRC) was designed and synthesized, based on the equilibrium between the spirolactam (non-fluorescence) and the ring-opened amide (fluorescence). The chemosensor NRC showed high Cu2+-selective fluorescence enhancement over commonly coexistent metal ions or anions in neutral aqueous media. The limit of detection (LOD) based on 3 Ã δblank/k was obtained as low as 0.18 μM of Cu2+, as well as an excellent linearity of 0.05-4.5 μM (R = 0.999), indicating the chemosensor of high sensitivity and wide quantitation range. And also the coordination mode with 1:1 stoichiometry was proposed between NRC and Cu2+. In addition, the effects of pH, co-existing metal ions and anions, and the reversibility were investigated in detail. It was also demonstrated that the NRC could be used as an excellent “off-on” fluorescent chemosensor for the measurement of Cu2+ in living cells with satisfying results, which further displayed its valuable applications in biological systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 85, Issue 3, 15 September 2011, Pages 1627-1633
Journal: Talanta - Volume 85, Issue 3, 15 September 2011, Pages 1627-1633
نویسندگان
Chunwei Yu, Lingxin Chen, Jun Zhang, Jinhua Li, Ping Liu, Wenhai Wang, Bing Yan,