Promoting the Oxygen Evolution Reaction via Morphological Manipulation of a Lamellar Nanorod-Assembled Ni(II)-Pyrazolate Superstructure.

Nanoscale pyrazolate-based coordination polymers (CPs) are becoming increasingly popular as electrocatalysts owing to their customizable compositions and structures. However, using them for oxygen evolution reaction (OER) is highly challenging due to their unsatisfactory catalytic efficiency and relatively low stability. Herein, a simple one-step solvothermal process was employed for the fabrication of polycrystalline nickel-pyrazolate [Ni(Pz)] with an unusual lamellar nanorod-assembled microsphere morphology for the first time using ethanol as a green organic solvent via controlling other physical parameters.

DNA Framework-Mediated Electrochemical Biosensing Platform for Amplification-Free MicroRNA Analysis.

MicroRNAs (miRNAs) have been explored as biomarkers for early diagnosis of diseases like cancers. However, it remains challenging to detect low-level miRNAs in the total RNA from real samples in a facile approach. In this work, we report a two-phase miRNA biosensing strategy based on a modular framework nucleic acid (FNA) platform, which combines the high efficiency of homogeneous reaction and the convenience of heterogeneous biosensing.

Electrochemical detection of PCR amplicons of Escherichia coli genome based on DNA nanostructural probes and polyHRP enzyme.

Fast, portable and sensitive analysis of E. coli is becoming an important challenge in many critical fields (e.g.

The dynamic motion of a M (M = Ca, Yb) atom inside the C₇₄ (D₃h) cage: a relativistic DFT study.

The interaction between M (M = Ca, Yb) atom and C74 (D 3h) has been investigated by all electron relativistic density function theory. With the aid of the representative patch of C74 (D 3h), we studied the interaction between C74 (D 3h) and M (M = Ca, Yb) atom and obtained the interaction potential. Optimized structures show that there are three equivalent stable isomers and there is one transition state between every two stable isomers.

DNA nanostructure-based ultrasensitive electrochemical microRNA biosensor.

MicroRNAs (miRNAs) are key regulators of a wide range of cellular processes, and have been identified as promising cancer biomarkers due to their stable presence in serum. As an surface-based electrochemical biosensors which offer great opportunities for low-cost, point-of-care tests (POCTs) of disease-associated miRNAs. Nevertheless, the sensitivity of miRNA sensors is often limited by mass transport and the surface crowding effect at the water-electrode interface.

Dynamic motion of La atom inside the C₇₄ (D₃h) cage: a relativistic DFT study.

The interaction between lanthanum atom (La) and C74 (D 3h) was investigated by all-electron relativistic density function theory (DFT). With the aid of the representative patch of C74 (D 3h), we studied the interaction between C74 (D 3h) and La and obtained the interaction potential. Optimized structures show that there are three equivalent stable isomers, with La located about 1.