Disc-shaped dinuclear palladium organyls Structure and phase behaviour of charge transfer induced mesophases [1]

Abstract

The recently synthesized non-calamitic/disc-shaped metal organyls containing two palladium atoms and eight flexible side chains represent the first case of metallo-mesogens exhibiting the nematic discotic (N_D) phase [2]. On doping with 2,4,7-trinitrofluorenone (TNF), a strong electron acceptor, the stabilization and/or induction of mesophases was observed. The phase behaviour of these binary systems and the structures of the mesophases displayed by them were studied by means of polarizing microscopy, differential scanning calorimetry, and X-ray scattering.