A highly sensitive and selective Hg2+ detection method was developed based on the Hg2+-mediated formation of split G-quadruplex–hemin DNAzymes. In this method, two label-free oligonucleotides are used. In the presence of Hg2+, the two oligonucleotides hybridize to each other to form a duplex, in which T–T mismatches are stabilized by T–Hg2+–T base pair.

Fossil fuels like coal, oil, and natural gases are not renewable on a human time scale and when combusted they pollute the earth’s atmosphere with carbon dioxide.

In this study, we integrated zinc oxide nanomaterials, which possess a high surface-to-volume ratio and take part in specific interactions with organic functional groups, into infrared sensing devices to improve both the sensitivity and selectivity of the detection of volatile organic com- pounds (VOCs).

Magnets composed of organic components that provide both spin and spin coupling to stabilize ferromagnetic ordering were first realized with the ionic, electron transfer salt [Fe(C5Me5)2]+[TCNE]c (TCNE ¼ tetracyanoethylene), which orders at 4.8 K (Tc). After more than two decades of study, its structure, as well as the magnetic behaviour and structures of its solvates, have been recently established.

Metabolite profiling in biomarker discovery, enzyme substrate assignment, drug activity/specificity determination, and basic metabolic research requires new data preprocessing approaches to correlate specific metabolites to their biological origin. Here we introduce an LC/MS-based data analysis approach, XCMS, which incorporates novel nonlinear retention time alignment, matched filtration, peak detection, and peak matching.