EASY-GOING DUMBO on-spectrometer optimisation of phase modulated homonuclear decoupling sequences in solid-state NMR

► On-spectrometer optimisation of homonuclear decoupling for 1H solid-state NMR. ► Genetic algorithms ensure simple one-step optimisation of decoupling efficiency. ► At very high rf fields very narrow proton lines are obtained showing a very high level of suppression of the dipolar interaction. ► Competitively resolved spectra are obtained at moderate external magnetic field (400 MHz) and spinning speed (12.5 kHz).