Phase transition and molecular assembly structure of ellagic acid ester derivatives

Ellagic acid and its esters (–OCOCnH2n+1) were examined in terms of phase transition, electronic structure, dielectric constant, and molecular assembly. The alternating layer arrangement of the one-dimensional π-stack and hydrophobic alkyl chains were observed in ellagic acid esters, and the in-plane amorphous glass state was observed at an optically isotropic assembly.