Bent-core liquid-crystalline derivative of tetrathiafulvalene: photoresponsivity and deracemization.
A bent-core mesogen containing a tetrathiafulvalene group is studied. The mesophase is an optically isotropic spongelike smectic phase without optical activity. The material responds to uv light in a peculiar way, showing photoconductivity and, in some circumstances, changing its mesomorphic properties. Under an electric field, large chiral domains are segregated from an initial racemic phase within a few minutes.
Martínez-Perdiguero
J
J
Departamento de Física de la Materia Condensada, Facultad de Ciencias, Universidad del País Vasco, Apartado 644, Bilbao, Spain.
Alonso
I
I
Ortega
J
J
Folcia
C L
CL
Etxebarria
J
J
Pintre
I
I
Ros
M B
MB
Amabilino
D B
DB