An enantioselective polyaniline-coated membrane electrode based on chiral salen Mn(III) as chiral selector

作者：Xu, Lan^*; Hou, Jingya; Yang, Yuanyuan; Li, Bingxin; Chen, Shaozhu

来源：Analytical Methods, 2012, 4(3): 807-811.

DOI：10.1039/c2ay05820k

• POTENTIOMETRIC SENSOR
• CONDUCTING POLYMER
• NEUTRAL IONOPHORE
• SOLID-CONTACT
• MANDELIC-ACID
• RECOGNITION
• ION
• LIQUID
• RESOLUTION
• ENANTIOANALYSIS

A novel ion-selective electrode for chiral determination of mandelic acid (MA) is constructed of a poly(vinyl chloride) (PVC) membrane doped with a chiral salen Mn(III) compound as chiral selector and coated with a chemically generated film of polyaniline (PANI). The developed sensor displays a linear response towards L-MA over a wide concentration range of 1.0 x 10(-1) to 1.0 x 10(-6) M with Nernstian slope of 57.6 mV per decade and the detection limit of 2.1 x 10(-7) M. Ascribed to the hydration of PANI, it demonstrates a better potentiometric characteristic (especially, linear range, detective limit, response time) in contrast to the uncoated membrane based sensor.

• 出版日期2012-3
• 单位西南大学