Carbazol-N-yl and diphenylamino end-capped triphenylamine-based molecular glasses: synthesis, thermal, and optical properties

Novel low-molecular-weight amorphous organic glasses based on triphenylamine core end-capped by either di(4-methoxyphenyl)amino or 3,6-dimethoxycarbazol-N-yl groups have been synthesized and characterized. The molecules exhibit high glass-transition temperatures (74-151 °C), excellent thermal stability, and are soluble in common organic solvents. Moreover, most of them absorb mainly in UV domain. These star-shaped triphenylamine derivatives are promising hole transporting materials for solid-state dye-sensitized solar cell applications.