A novel composite film for detection and molecular weight determination of organic vapors
A novel composite film for detection and molecular weight determination of organic vapors
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一种用于有机蒸气检测和分子量测定的新型复合膜
DOI：
10.1039/c2jm31623d
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发表时间：
2012
影响因子：
--
通讯作者：
I. Warner
中科院分区：
文献类型：
--
作者：
Bishnu P. Regmi;J. Monk;B. El‐Zahab;Susmita Das;F. Hung;D. Hayes;I. Warner
一种新型的气敏复合膜，包括醋酸纤维素和一种代表性的化合物（1-正丁基-2，3-二甲基咪唑鎓六氟磷酸盐）从一组基于有机盐的均匀材料（GUMBOS）已开发和表征。利用石英晶体微天平（QCM）传感器研究了薄膜的气敏特性。该材料对许多有机蒸气表现出极大改善的性能特性。结果表明，共振频率的变化（Δf）与运动电阻的变化（ΔR）之比是一个与浓度无关的量，与吸附的化学物质的分子量成正比。据我们所知，这是第一项研究表明Δf/ΔR与分析物分子量之间存在直接关系。这一独特的发现应被证明是非常有用的，易于识别和分子量测定的广泛的化学蒸汽。
A novel vapor-sensitive composite film comprising cellulose acetate and a representative compound (1-n-butyl-2,3-dimethylimidazolium hexafluorophosphate) from a Group of Uniform Materials Based on Organic Salts (GUMBOS) has been developed and characterized. The vapor sensing characteristics of the film is investigated using a quartz crystal microbalance (QCM) transducer. The material exhibited greatly improved performance characteristics toward a number of organic vapors. It is demonstrated that the ratio of the change in resonance frequency (Δf) to the change in motional resistance (ΔR) is a concentration-independent quantity proportional to the molecular weight of the absorbed chemical species. To the best of our knowledge, this is the first study to show a direct relationship between Δf/ΔR and the molecular weight of analytes. This unique finding should prove extremely useful for easy identification and molecular weight determination of a broad range of chemical vapors.
来自一组基于有机盐的均匀材料的磁性和非磁性纳米颗粒。
影响因子：
17.1
作者：
Tesfai,Aaron;El-Zahab,Bilal;Kelley,AlgernonT;Li,Min;Garno,JayneC;Baker,GaryA;Warner,IsiahM
通讯作者：
Warner,IsiahM