Figure 6
From: Generating and sustaining long-lived spin states in 15N,15N′-azobenzene
Relaxation traces obtained in experiments with strong spin-locking on the 15N channel (the nutation frequency ≥100 Hz) and on the 1H channel (the nutation frequency ≥1000 Hz) for sustaining the LLS. The M → S and S → M conversion is performed on the following channels: 15N-15N (a), 1H-15N (b), 1H-1H (c) and 15N-1H (d). Spin order conversion has been introduced using SLIC and adSLIC (the specific method is indicated for each subplot). All relaxation traces were fitted using a common lifetime TLLS = 16.5 minutes of the long-lived component while the lifetime of the short living component, Tf, was restricted to 18 s. The extracted amplitudes ALLS are equal to (a) 10% for SLIC and 17% for adSLIC, (b) 90% for SLIC and 117% for adSLIC, (c) 4%, (d) 0.3%. These values were used as experimental values given in Fig. 2. We detected the same TLLS at magnetic fields of 9.4 T and 16.4 T. Parameters of each individual fitting are available in the Supplementary Information for experiments #27, #28 (a), #36, #37 (b), #39 (c), #44 (d).
