Figure 1.

Top) Radio frequency pulse sequence used for the 2D T₁–T₂ correlation experiments in this work; the phase cycling used was φ₁ = {x, −x}, φ₂ = {x, x, −x, −x}, and the receiver phase was φ_Rec = {x, x, −x, −x}. In the experiment, the ω pulses where toggled as φ₃ = {y,−y}. The details regarding the experimental values for m, t₁ and τ are described in the text. Bottom) Radio frequency pulse sequence used for the 2D T₂–T₂ exchange measurements in this work; the phase cycling used was φ₁ = {x, −x}, φ₃ = {x, x, −x, −x} and the receiver phase was φ_Rec = {x, −x}. The ω pulses were toggled using the phase scheme φ₂ = {y, −y} and experimental values for time τ, the variables n and m, and the exchange time T are described in the text.