کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7614185 1493621 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterization of fluorophenylboronic acid-functionalized monolithic columns for high affinity capture of cis-diol containing compounds
ترجمه فارسی عنوان
آماده سازی و مشخص کردن ستونهای یکپارچه اسیدفولفورفنیل بورونیک اسید برای جذب بالای ترکیبات حاوی سیس دیول
کلمات کلیدی
اسید فلورفنیل بورون، ستون های یکپارچه، وابستگی بورون، گرفتن، سیس دیول،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Boronic acids are important ligands for the selective recognition and capture of cis-diol containing compounds, such as nucleosides and glycoproteins. In a recent study, it was found that 2,4-difluoro-3-formyl-phenylboronic acid (DFFPBA) exhibited an ultrahigh boronate affinity for binding with monosaccharides. Herein three DFFPBA-functionalized monolithic columns with varying spacer arms were synthesized and characterized. Different cis-diol containing compounds were used for the evaluation of the boronate affinity of the DFFPBA-functionalized monoliths. The DFFPBA-functionalized monoliths exhibited advantageous characteristics. These monoliths exhibited an ultrahigh boronate affinity toward cis-diol containing compounds. Moreover, the monolith with appropriate spacer arm exhibited a low binding pH (6.0) for cis-diols of small molecular weight. These advantages made DFFPBA-functionalized monoliths suitable for the enrichment of trace cis-diol containing compounds in neutral and weak acidic real samples. In addition, it was interesting that the length of spacer arms strongly influenced the boronate affinity: increasing the spacer arm resulted in apparently reduced boronate affinity, and inappropriate spacer arm length even eliminated the boronate affinity toward glycoprotein. To explain such a phenomenon, a possible mechanism was proposed. Finally, the potential of DFFPBA-functionalized monoliths for real applications was demonstrated with the selective enrichment of modified nucleosides from human urine.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1305, 30 August 2013, Pages 123-130
نویسندگان
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