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首页> 外文期刊>Electroanalysis >Improved Potentiometric and Optic Sensitivity of Polyaniline Film to Dissolved Oxygen by Incorporating Iron-Porphyrin
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Improved Potentiometric and Optic Sensitivity of Polyaniline Film to Dissolved Oxygen by Incorporating Iron-Porphyrin

机译：铁卟啉的引入改善了聚苯胺薄膜对溶解氧的电位和光敏性

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摘要

Polyaniline (PAn) films can be used in an electrochemical and optical combination system to amplify the optical signal for dissolved oxygen (DO) detection. To further improve the sensitivity of PAn film to DO, an oxygen-sensitive molecule, Fe(III) meso-tetera (4-sulfonatophenyl) porphyrin (FeTSPP) is incorporated into PAn during the film generation. Results show that, after incorporating FeTSPP into the PAn matrix, both optical and potentiometric responses to DO are improved. The optimal optical signal is obtained under the application of -2.5 mu A to the modified electrode. Under this applied current, both optical and potentiometric signals show linear relations with the DO concentration within the range of 0.00-4.63 mgL(-1), and the sensitivities for optical and potentiometric signals are 4.18 grayscale units mg(-1)L and 13.39 mVmg(-1) L, respectively.
机译：聚苯胺（PAn）膜可用于电化学和光学组合系统，以放大用于溶解氧（DO）检测的光信号。为了进一步提高PAn膜对DO的敏感性，在膜生成过程中，将氧敏感分子Fe（III）内四元体（4-磺酰基苯基）卟啉（FeTSPP）引入PAn中。结果表明，将FeTSPP掺入PAn基质后，对DO的光学和电位响应均得到改善。在-2.5μA的修饰电极上获得最佳光信号。在此施加的电流下，光信号和电位信号均显示与DO浓度在0.00-4.63 mgL（-1）范围内的线性关系，光信号和电位信号的灵敏度分别为4.18灰度单位mg（-1）L和13.39 mVmg（-1）L。

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