In the 1920s the periodic system turned out to be a macroscopic representation of the internal structure of the atoms – making it as much about physics as it is about chemistry

The Periodic System between Chemistry and Physics

Transition-Metal-Free Synthesis of Phenanthridinones
First phenanthridinone synthesis that progresses via a direct C–H amidation under visible-light irradiation

Single Cells Get Their Shells
Nanocomposite exoskeleton makes mammalian cells more resilient and incorporated inorganic building blocks provide many possibilities

Guess the Character (8)
Can you guess the fictional scientist from the description?

Sir Henry’s Secret Pot of Gold – Part 1
A true fairy tale for entrepreneurs—with a rocky start

Identifying the Best Options for Chemicals Regulations
Circular economy, plastic pollution, chemical data access among the topics discussed at Helsinki Chemicals Forum (HCF2019)

Antibiotic Ornament Clasp
Antibiotic from the human nose works by proton translocation

Visualizing Immune Cells in Brain Tissue
Microglia labeled with a fluorescence turn-on substrate

Underwater Power Generation
Electrochemical system autonomously switches between low- and high-energy modes

Alfredo Pérez Rubalcaba (1951 – 2019)
Spanish chemist and politician passed away