A series of rhenium complexes bearing a pyridine-based PNP-type pincer ligand are synthesized from phosphine as precursors. dinitrogen-bridged dirhenium complex the ligands catalytically converts dinitrogen into ammonia during reaction with KC8 reductant and [HPCy3]BArF4 (Cy=cyclohexyl, ArF=3,5-(CF3)2C6H3) proton source at ?78 °C to afford 8.4 equiv based on atom catalyst. The rhenium-dinitroge...

Abstract Nanosensors have proven to be powerful tools monitor single cells, achieving spatiotemporal precision even at molecular level. However, there has not been way of extending this approach statistically relevant numbers living cells. Herein, we design and fabricate nanosensor array in microfluidics that addresses limitation, creating a Nanosensor Chemical Cytometry (NCC). nIR fluorescent ...

Glycoproteins are closely associated with the occurrence of diverse diseases, and they have been used as biomarkers and therapeutic targets in clinical diagnostics. Currently, mass spectrometry has proven to be a powerful tool for glycoprotein analysis, but it is almost impossible to directly identify glycoproteins without the preparation and pretreatment of samples. Furthermore, biological sam...

By using triangular silver (Ag) nanoparticle array, a localized surface plasmon resonance (LSPR) nanosensor was fabricated and shown to sense serum p53 protein in vitro, which is involved in head and neck squamous cell carcinoma (HNSCC). The nanosensor consists of a triangular Ag nanoparticles array with single particle dimension of 120 nm in-plane width and 45 nm out-of-plane height. When exam...

Nanophotonics, Nanoelectronics and Nanosensor (N3) is part of International Photonics and OptoElectronics Meetings (POEM), launched by Wuhan National Laboratory for Optoelectronics (WNLO). POEM is a large-scale multi-disciplinary international conference in the field of photonics and optoelectronics. It aims to focus on the key techniques of scientific frontier and industry in the field of opto...

adsorption of cyanogen molecule on the surface of pristine and sc-doped b12n12 nanocage is scrutinized using at dft calculations to investigating its potential as chemical nanosensors. the results show that cyanogen is weakly adsorbed on the pristine b12n12 and consequently its electrical properties are changed insignificantly. in order to improve the properties of the nanocage sensor, sc dopin...

Molybdenum (Mo) is an essential trace element for almost all living organisms including animals. Mo is used as a catalytic center of molybdo-enzymes for oxidation/reduction reactions of carbon, nitrogen, and sulfur metabolism. Whilst living cells are known to import inorganic molybdate oxyanion from the surrounding environment, the in vivo dynamics of cytosolic molybdate remain poorly understoo...

Low temperature regular phosphine fumigations under the normal oxygen level and oxygenated phosphine fumigations under superatmospheric oxygen levels were compared for efficacy against the aphid, Nasonovia ribisnigri (Mosley), and effects on postharvest quality of romaine and head lettuce. Low temperature regular phosphine fumigation was effective against the aphid. However, a 3 d treatment wit...

Aluminium phosphide (AlP) is used to kill rodents in grain storage. It produces phosphine gas which is toxic for mitochondria. The exact mechanism of action is unclear, but phosphine is thought to produce toxicity by blocking cytochrome-c oxidase, which inhibits oxidative phosphorylation and result in cell death. This poisoning has a high mortality, and survival is unlikely if more than 1.5 g i...

The Buchwald–Hartwig amination of arylhalides with the Pd–Josiphos complex is a very useful process for generation primary amines using ammonia as reactant. Density-functional theory (DFT) calculations are carried out to examine reaction mechanism this process. Although general C–N cross-coupling known, there still some open questions regarding effect chelate phosphine ligand and role base in R...