کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7230397 | 1470946 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rapid and facile ratiometric detection of an anthrax biomarker by regulating energy transfer process in bio-metal-organic framework
ترجمه فارسی عنوان
تشخیص سریع و آسان اندازه گیری زیست سنجی سم زدایی از طریق تنظیم فرایند انتقال انرژی در چارچوب زیست محیطی
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کلمات کلیدی
قابهای فلزی-ارگانیک، لانتانید، انتقال انرژی، سنسور رنگی، اسید دیاپیکولینات
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
A ratiometric fluorescent sensor based on luminescent bio-metal-organic framework was prepared by exchanging both Tb3+ and Eu3+ cations into anionic bio-MOF-1. Due to a highly efficient energy transfer from Tb3+ to Eu3+ (>89%), emission color of Tb/Eu@bio-MOF-1 was orange-red even though Tb3+ was the dominant content in this Tb/Eu co-doping material. More interestingly, this energy transfer process could be modulated by dipicolinic acid (DPA), an unique biomarker for bacillus spores. With DPA addition, corresponding DPA-to-Tb3+ energy transfer was gradually enhanced while the energy transfer from Tb3+ to Eu3+ was significantly weakened. By regulating the energy transfer process in Tb/Eu@bio-MOF-1, visual colorimetric sensing of DPA in porous MOF was realized for the first time. Detection limit of Tb/Eu@bio-MOF-1 for DPA was 34 nM, which was much lower than an infectious dosage of Bacillus anthracis spores (60 μM) for human being. Besides, Tb/Eu@bio-MOF-1 showed a remarkable selectivity over other aromatic ligands and amino acids. More importantly, this porous ratiometric sensor worked equally well in human serum. These particularly attractive features of Tb/Eu@bio-MOF-1 made the direct, rapid and naked-eye detection of DPA for practical application possible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 85, 15 November 2016, Pages 287-293
Journal: Biosensors and Bioelectronics - Volume 85, 15 November 2016, Pages 287-293
نویسندگان
Yihe Zhang, Bin Li, Heping Ma, Liming Zhang, Youxuan Zheng,