Extending this idea, and highly relevant for understanding switchable solvents and their performance, making measurements that give insight into the structure and dynamics of local chemical environments as they respond to stimuli helps inform the selection and application of the reversible solvents. The techniques developed here would be well-suited to further study of other switchable solvents, ionic liquids, deep eutectic solvents, polymers, microemulsions, supramolecular chemistries, and nanomaterials.