Rapid Screening of Etomidate and Its Analogs in Seized e-Liquids Using Thermal Desorption Electrospray Ionization Coupled with Triple Quadrupole Mass Spectrometry.

The growing popularity of e-cigarettes has raised significant concerns about the safety and potential abuse of these products. Compounds originally used in the medical field, such as etomidate, metomidate, and isopropoxate, have been illegally added to e-liquids, posing substantial risks to consumer health, and facilitating the misuse of illicit drugs. To address these concerns, this study developed a rapid and efficient method for detecting etomidate, metomidate, and isopropoxate in e-liquids using thermal desorption electrospray ionization coupling triple quadrupole mass spectrometry (TD-ESI/MS/MS).

Biomimetic Multifunctional Graphene-Based Coating for Thermal Management, Solar De-Icing, and Fire Safety: Inspired from the Antireflection Nanostructure of Compound Eyes.

Due to the ubiquitous and inexhaustible solar source, photothermal materials have gained considerable attention for their potential in heating and de-icing. Nevertheless, traditional photothermal materials, exemplified by graphene, frequently encounter challenges emanating from their elevated reflectance. Inspired by ocular structures, this study uses the Fresnel equation to enhance the photo-thermal conversion efficiency of graphene by introducing a polydimethylsiloxane (PDMS)/silicon dioxide (SiO) coating, which reduces the light reflectance (≈20%) through destructive interference.

(3,5)-2-Amino-4,6-bis(pyridin-3-yl)hepta-1,3,5-triene-1,1,3-tricarbo-nitrile.

In the title compound, CHN, the dihedral angle between the pyridine rings is 37.98 (7)°. In the crystal, N-H⋯N hydrogen bonds link the mol-ecules into (10) sheets.

[The cell-free protein synthesis-based protein microarray technology].

The major bottle-neck in the way of constructing high density protein microarray is the availability and stability of proteins. The traditional methods of generating protein arrays require the in-vivo expression, purification and immobilization of hundreds or thousands of proteins. The cell-free protein array technology employs cell-free expression systems to produce proteins directly onto surface from co-distributed or pre-arrayed DNA or RNA, thus avoiding the laborious and often costly processes of protein preparation in the traditional approach.