Supramolecular Arrangement and Rheological Properties of Bisamide Gels.

ABSTRACT: We report a systematic study of the gelation behavior of nBA gelators in xylene, with odd and even n-methylene spacers between the amide groups (n = 5-10) and 17 carbons at each end. The melting temperatures (T_m⁰) of nBA gels are obtained from fitting our DSC_N(T) model to the experimental DSC data. The found T_m⁰ of nBA gels is about 35 °C lower than T_m⁰ of the pure nBA gelators. This is reasonably well explained by a simple model combining theories of Flory-Huggins and Gibbs free energy of melting (FHM model). We attribute this depression to an increase in entropy upon melting of the gel due to mixing with the solvent. The odd-even alternation in T<

SUBMITTER: Ghanbari E 

PROVIDER: S-EPMC10413945 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature