Triggering the dynamics of a carbazole-p-[phenylene-diethynyl]-xylene rotor through a mechanically induced phase transition†
A new rotor exhibits rich solvatomorphism behavior with eight X-ray structures obtained. A heterogeneous solid obtained by mechanical stress exhibited a dominant isotropic 2H line shape at high temperatures. The motion occurs only in the amorphous component of this solid, with an Ea of 7.4 kcal mol−1 and a low pre-exponential factor A of 6.22 × 1010 s−1, which indicates that the motion requires the distortion of the molecular axis.
- This article is part of the themed collection: Celebrating Latin American Talent in Chemistry