کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399414 | 1505905 | 2014 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A chromone Schiff-base as Al(III) selective fluorescent and colorimetric chemosensor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A chromone Schiff-base as Al(III) selective fluorescent and colorimetric chemosensor A chromone Schiff-base as Al(III) selective fluorescent and colorimetric chemosensor](/preview/png/5399414.png)
چکیده انگلیسی
A novel and simple chromone Schiff-base receptor 7-methoxychromone-3-carbaldehyde-(indole-2-formyl) hydrazone (MCIH) was prepared. Among the various metal ions, only Al3+ induces the fluorescence enhancement and results in “OFF-ON” type sensing with excellent selectivity and high sensitivity in ethanol system. Upon binding of Al3+, a significant fluorescence enhancement with an “OFF-ON” ratio over 500-fold was triggered and it features visible light excitation (423Â nm) and emission (507Â nm) profiles. However, other metal ions had no such significant effect on the fluorescence. Also, MCIH can severe as a highly selective chemodosimeter for Al3+ with “naked-eye” detection, which is easily observed from colorless to yellow-green. The detection limit of MCIH for Al3+ detection was as low as 5Ã10â8Â M level.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 155, November 2014, Pages 84-88
Journal: Journal of Luminescence - Volume 155, November 2014, Pages 84-88
نویسندگان
Long Fan, Jing-can Qin, Tian-rong Li, Bao-dui Wang, Zheng-yin Yang,