Abstract:The design and synthesis of hydrazone-based switches with a CF 3 reporting group for 19 F pH imaging using relaxation rate changes were described. A paramagnetic center was introduced into the hydrazone molecular switch scaffold by substitution of an ethyl functional group with a paramagnetic complex. The mechanism of activation relies on a gradual increase in T 1 and T 2 magnetic resonance imaging (MRI) relaxation times as pH decreases due to E/Z isomerization, which results in a change in the distance betwee… Show more
The external electric field has emerged as a powerful tool for building molecular switch with excellent properties. In this work, we investigate that the impact of an external electric field...
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