3D carbonized wood-based integrated electrochemical immunosensor for ultrasensitive detection of procalcitonin antigen.

This work presents a novel 3D carbonized wood-based integrated electrochemical immunosensor for ultrasensitive detection of procalcitonin (PCT) antigen at picogram level, achieving a wide linear detection range for PCT concentrations range from 0.05 to 90 pg mL with a low detection limit of 0.014 pg mL (S/N = 3), outperforming the previous reports.

Clustered piperidinium-functionalized poly(terphenylene) anion exchange membranes with well-developed conductive nanochannels.

Anion exchange membrane fuel cells (AEMFCs) attract considerable attention owing to their high-power density and potential utilization of cheap non-noble metal catalysts. However, anion exchange membranes (AEMs) still face the problems of low conductivity, poor dimensional and chemical stability. To address these issues, AEMs with clustered piperidinium groups and ether-bond-free poly(terphenylene) backbone (3QPAP-x, x = 0.

Single Organic Droplet Collision Voltammogram via Electron Transfer Coupled Ion Transfer.

Single-emulsion toluene oil droplets (femtoliter) containing a hydrophobic redox probe that are dispersed in water stochastically collide with an ultramicroelectrode (UME). The fast-scan cyclic voltammetry (FSCV) or Fourier-transformed sinusoidal voltammetry (FTSV) is applied: the UME was scanned with a fast, repetitive triangular, or sinusoidal potential, and its current in time/frequency domains were monitored. The electron transfer at the UME/oil interface is coupled with ion transfer at the oil/water interface.