کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
177767 | 459000 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fluorescent pH probes based on boron dipyrromethene dyes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Two novel fluorescent pH probes based on 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene dyes were configured as a “fluorophore-spacer-receptor” system. Their absorption and fluorescence properties were investigated in various solvents; in aqueous solution, based on their photo-induced electron transfer, the probes exhibited 3-fold (pH 8.70–4.93) and 14-fold (pH 9.02–3.29) fluorescence enhancement upon increase in the acidity of the solution, respectively. The probes can be used as fluorescent pH probes which are excitable with visible light; the pKa values of the probes were determined from the fluorescence changes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 81, Issue 1, April 2009, Pages 58–62
Journal: Dyes and Pigments - Volume 81, Issue 1, April 2009, Pages 58–62
نویسندگان
Maozhong Tian, Xiaojun Peng, Feng Feng, Shuangming Meng, Jiangli Fan, Shiguo Sun,