Category: 6. Chemistry

Synthesis of schiff base monomers

The synthesis of the Schiff base monomers was accomplished via the reaction of the 4-aminobenzoic acid with 4-hydroxybenzaldehyde or 2,4-dihydroxybezaldehyde in a refluxed ethanolic solution in the presence of a…

Spectral characteristics

The UV absorption spectra of the three drugs exhibited distinct absorption bands in the 200–350 nm region, with noticeable differences in their absorption intensities and wavelengths of maximum absorption (λ_max)…

There has been condemnation of a leaked plan to dismantle the Environmental Protection Agency’s (EPA) Office of Research and Development (ORD) by former senior agency staff. The plan would see 50–75% of its 1540 employees laid off and the…

Solve this ‘wordoku’ in the same way as a sudoku with the letters instead of numbers (each of the nine letters in each row, column and nine-square cell). Once solved, one of the overall diagonals can be rearranged into the name of a famous…

Per- and polyfluoroalkyl substances (PFAS) – the persistent, bio-accumulative anthropogenic pollutants colloquially known as ‘forever chemicals’ – can be mechanochemically broken down into fluoride sources for industrially important…

Paul Alivisatos is president of the University of Chicago, US. He received the Enrico Fermi Presidential Award from the US government in January 2025 for his work developing the foundational materials and physical chemistry to produce…