A widened emission window of the peroxydisulfate-oxygen system for the detection of L-alanine

作者：Ran, Peiyao; Zhu, Shu; Song, Jinyi; Wu, Jingling; Mo, Fangjing; Fu, Yingzi^*

来源：Colloids and Surfaces B: Biointerfaces , 2018, 169: 418-421.

DOI：10.1016/j.colsurfb.2018.05.036

• Electrogenerated chemiluminscence
• L-alanine
• Signal amplification complex
• Peroxydisulfate-oxygen

Peroxydisulfate-oxygen (S2O82--O-2) system has become one of the most used systems in electrogenerated chemiluminscence (ECL) field. Due to S2O82- can be used as Fenton Reagent, this work designed an ECL biosensor based on the S2O82--O-2 system for the detection of L-alanine in a widened emission window and using hemin/G-quadruplex and platinum and palladium nanowires (Pt-Pd NWs) to in situ generate O-2 to amplify the ECL intensity. The proposed ECL sensor showed an excellent analytical property for the detection of L-alanine in a linear range of 5.0 x 10(-3) M to 1.0 x 10(-8) M with the detection limit of 3.3 x 10(-9) M (S/N = 3). This work with high selectivity, stability and reproducibility may open a new door to apply S2O82- in ECL field.

• 出版日期2018-9-1
• 单位西南大学