کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5276887 | 1385567 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bimodal fluorescence signaling based on control of the excited-state conformational twisting and the ground-state protonation processes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Bimodal fluorescence signaling based on control of the excited-state conformational twisting and the ground-state protonation processes Bimodal fluorescence signaling based on control of the excited-state conformational twisting and the ground-state protonation processes](/preview/png/5276887.png)
چکیده انگلیسی
Amino-based fluoroionophores 1 and 2 can selectively sense alkaline earth metal ions in MeCN under both neutral and acidic conditions by different signaling mechanisms. The fluoroionophoric behavior for the neutral probes is characterized by an 'off-on' photoinduced electron transfer (PET)-like fluorescence intensity response due to a switching from a twisted internal charge transfer (TICT) to a planar internal charge transfer (PICT) state. For the protonated probes (i.e., 1/H+ and 2/H+), the fluorescing species is the localized stilbene fluorophores, but dual fluorescence is induced upon metal-ion recognition through a deprotonation process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 48, Issue 17, 23 April 2007, Pages 3097-3102
Journal: Tetrahedron Letters - Volume 48, Issue 17, 23 April 2007, Pages 3097-3102
نویسندگان
Jye-Shane Yang, Chung-Yu Hwang, Mon-Yao Chen,