Theoretical characterization of the structural and hole transport dynamics in liquid-crystalline phthalocyanine stacks.
We present a joint molecular dynamics (MD)/kinetic Monte Carlo (KMC) study aimed at the atomistic description of charge transport in stacks of liquid-crystalline tetraalkoxy-substituted, metal-free phthalocyanines. The molecular dynamics simulations reproduce the major structural features of the mesophases, in particular, a phase transition around 340 K between the rectangular and hexagonal phases. Charge transport simulations based on a Monte Carlo algorithm show an increase by 2 orders of magnitude in the hole mobility when accounting for the rotational and translational dynamics. The results point to the formation of dynamical structural defects along the columns.
Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, BE-7000 Mons, Belgium.
Y
Y
Olivier
L
L
Muccioli
V
V
Lemaur
Y H
YH
Geerts
C
C
Zannoni
J
J
Cornil