Bile salt incorporated polypyrrole thin film for ethanol sensing.

IF 1.5 4区生物学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Indian journal of biochemistry & biophysics Pub Date : 2015-04-01

Partha P D Sharma, D Sarkar

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引用次数: 0

Abstract

Polypyrrole (PPy)-bile salt composite was used for sensing ethanol vapor. PPy was synthesized by interface polymerization for subsequent fabrication of thin film of its composite with bile salt, by in-situ co-dispersion method and then exposed to ethanol vapour. Sensing was visualized through changes in morphological, structural and optical characterizations. The ethanol exposed film showed larger agglomeration as revealed in its surface morphology on scanning electron microscope (SEM) and greater crystallinity as seen through X-Ray diffraction (XRD). Fourier transform infra red (FTIR) and nuclear magnetic resonance spectroscopy (NMR) of the ethanol incorporated film also gave signature of the presence of bile salt and alcohol. Alcohol incorporation pattern resulted in increase in electrical conductance from 7.08539 x 10(-5) mA/V to 8.0356 x 10(-5) mA/V, as determined from current voltage characterizations. Average molecular weight (M(n)) obtained from gel permeation chromatography changed from 6160 to 10300 on ethanol intake. Photoluminescence (PL) intensity was quenched and the PL peak shifted from 430 to 409 on ethanol exposure. Changes in morphological, structural, optical and electrical properties of the composite on ethanol exposure showed its prospective application for sensing ethanol.

本刊更多论文

胆盐掺入聚吡咯薄膜用于乙醇传感。

采用聚吡咯-胆盐复合材料对乙醇蒸汽进行传感。采用界面聚合法制备聚吡啶吡啶，并与胆盐原位共分散制备聚吡啶吡啶复合薄膜，再将其暴露于乙醇蒸气中。通过形态学、结构和光学表征的变化来可视化感知。扫描电镜(SEM)和x射线衍射(XRD)分析表明，乙醇暴露膜的结晶度较大，结晶度较高。傅里叶变换红外光谱(FTIR)和核磁共振波谱(NMR)也给出了胆盐和酒精存在的特征。根据电流电压特性，酒精掺入模式导致电导率从7.08539 x 10(-5) mA/V增加到8.0356 x 10(-5) mA/V。凝胶渗透色谱法获得的平均分子量(M(n))在乙醇摄入时从6160变化到10300。在乙醇照射下，光致发光(PL)强度被淬灭，PL峰由430移至409。该复合材料在乙醇暴露下的形态、结构、光学和电学性能的变化表明其在乙醇传感领域具有广阔的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Indian journal of biochemistry & biophysics 生物-生化与分子生物学

CiteScore

2.90

自引率

50.00%

发文量

审稿时长

3 months

期刊介绍： Started in 1964, this journal publishes original research articles in the following areas: structure-function relationships of biomolecules; biomolecular recognition, protein-protein and protein-DNA interactions; gene-cloning, genetic engineering, genome analysis, gene targeting, gene expression, vectors, gene therapy; drug targeting, drug design; molecular basis of genetic diseases; conformational studies, computer simulation, novel DNA structures and their biological implications, protein folding; enzymes structure, catalytic mechanisms, regulation; membrane biochemistry, transport, ion channels, signal transduction, cell-cell communication, glycobiology; receptors, antigen-antibody binding, neurochemistry, ageing, apoptosis, cell cycle control; hormones, growth factors; oncogenes, host-virus interactions, viral assembly and structure; intermediary metabolism, molecular basis of disease processes, vitamins, coenzymes, carrier proteins, toxicology; plant and microbial biochemistry; surface forces, micelles and microemulsions, colloids, electrical phenomena, etc. in biological systems. Solicited peer reviewed articles on contemporary Themes and Methods in Biochemistry and Biophysics form an important feature of IJBB. Review articles on a current topic in the above fields are also considered. They must dwell more on research work done during the last couple of years in the field and authors should integrate their own work with that of others with acumen and authenticity, mere compilation of references by a third party is discouraged. While IJBB strongly promotes innovative novel research works for publication as full length papers, it also considers research data emanating from limited objectives, and extension of ongoing experimental works as ‘Notes’. IJBB follows “Double Blind Review process” where author names, affiliations and other correspondence details are removed to ensure fare evaluation. At the same time, reviewer names are not disclosed to authors.