کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1254619 971382 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A squaraine based fluorescent probe for mercury ion via coordination induced deaggregation signaling
ترجمه فارسی عنوان
یک پروب فلورسنت مبتنی بر اسکواآوران برای یون جیوه از طریق هماهنگی، موجب سیگنالینگ انهدام گردید
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی

Due to the high affinity between dithiocarbamate (DTC) and Hg2+, a fluorescent probe based on squaraine chromophore with DTC side arm for Hg2+via coordination induced deaggregation signaling has been designed and synthesized. Squaraine has a high tendency to aggregate in aqueous solution, and such self-aggregation usually results in a dramatic absorption spectral broadening with fluorescence emission quenching. The combination of the DTC side arm of the probe with Hg2+ induces steric hindrance, leading to the deaggregation of the dye complex, companying with a fluorescence emission restoration. In EtOH–H2O (20:80, v/v) solution, this “turn on” fluorescent probe has high selectivity and sensitivity toward Hg2+ over other metal ions, and the limit of detection for Hg2+ was estimated as 2.19 × 10−8 mol/L by 3σ/k.

A squaraine based “turn on” fluorescent probe with a dithiocarbamate ionophore for mercury ion was described, and the sensing mechanism was based on coordination induced deaggregation.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Chemical Letters - Volume 25, Issue 9, September 2014, Pages 1291–1295
نویسندگان
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