Abstract: It was found that compound N,N-(5-alkoxyl-1,3-dicarboxylic benzene)-N',N'-di(4-methylbenzoyl) dihydrazide(A_n) could form thermoreversible gels in appropriate organic solvents, such as benzene, toluene, nitrobenzene, chloroform etc. whose concentrations were well below 1%(mass fraction). SEM observations and X-ray diffraction results indicate that the molecules self-assembled into the fibrous aggregates and kept a layer conformation in their gel states. FTIR and ¹H NMR studies confirm that the hydrogen bonding played a key role in the formation of these supra-structures and was considered as the driving force. And it was also found that the length of lateraly substituted alkoxy chain in the compounds could affect their gels formation ability and transition temperature, while their gel morphologies and structures weren't affected by the length of lateraly substituted alkoxy chain.

Key words: Dihydrazide derivative, Organogel, Gelator, Hydrogen bond