A thermoreversible self-assemble process front gel (fiber) to sol (vesicle) state in the system alkylamine-ethylene glycol is for the first time monitored by in situ polarized optical microscopy, XRD, H-1 NMR, SEM, SAXRD, FTIR and drop shape analysis. It is found that the solvent molecules are intercalated with alkylamine molecule to form the organogel and Vesicle structures. A model based oil structural transformation with respect to these alkylamine gelator-solvent assembles is therefore proposed.