Inside Back Cover: Enhanced Resolution in EPR Spectroscopy Using <i>Para</i> ‐Hydrogen Matrices (Angew. Chem. Int. Ed. 6/2026)

In the Communication (e18517), André K. Eckhardt and co-workers demonstrate the advantageous properties of solid para-hydrogen (p-H2) matrices for electron paramagnetic resonance spectroscopy by investigating the 2,2,6,6-tetramethylpiperidinyloxyl (TEMPO) radical and an in situ generated P-centered mono-radical. The spectral resolution of the P-centered radical in p-H2 is roughly enhanced by a factor of three compared to argon.