کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7148675 | 1462105 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anion responsive molecular valve consisting of poly(4-vinylpyridine) gel
ترجمه فارسی عنوان
سوپ مولکولی واکنش آنیونی متشکل از ژل پلی (4-وینیل پرییدین)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
An anion responsive molecular valve comprised of poly(4-vinylpyridine) gel-coated Au mesh was developed. At pH 3 the valve closed when the concentration of anions such as Clâ, ClO4â, SCNâ, and HSO4â was low, whereas automatically opened upon an increase in the concentration of anion due to collapse of the gel. The valve re-closed upon a loading of a 1 Ã 10â3 M HCl solution. The concentration where the valve opens was found to increase in the order of HSO4â < ClO4â = SCNâ < Clâ (5 Ã 10â3, 8 Ã 10â3, 8 Ã 10â3, and 8 Ã 10â2 M, respectively). This order was consistent with that of a concentration where the gel shrinks and was rationalized by affinity between an anion and pyridyl group of the gel. The valve exhibited repeated opening and closing 5 cycles upon alternative loading of NaClO4 (pH 3) and 1 Ã 10â3 M HCl solutions, and 20 cycles for Na2SO4 (pH 3) and HCl solutions. The effect of cation was also studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 140-145
Journal: Sensors and Actuators B: Chemical - Volume 185, August 2013, Pages 140-145
نویسندگان
Kazutake Takada, Masahiro Takezaki, Naoki Hisamatsu, Akio Yuchi,