Abstract
Pyridazinediols annulated tetrathiafulvalenes with hydrogen bonding sites and pi-pi stacking unit form various aggregates depending on solvents, temperature, concentration and so on. We previously reported that pylidazinediols annulated TTF derivatives with long alkyl chains form fibrous structure from common organic solvents. In this time, we found that derivatives with methylthio group (1) formed supramolecular gel from dimethyl sulfoxide-methanol solution containing hydrazine molecules. Additionally, the gel transformed into pseudo-polymorphic single crystals spontaneously at room temperature. In this presentation, we wish to present the details and its structure control.