Self-assembled electrooptic thin films with remarkably blue-shifted optical absorption based on an X-shaped chromophore.
An "X-shaped" two-dimensional electrooptic (EO) chromophore with extended orthogonal conjugation was designed and synthesized. Self-assembled thin films of this chromophore were fabricated via layer-by-layer chemisorptive siloxane-based self-assembly. The films exhibit a dramatically blue-shifted optical maximum (325 nm) while maintaining a large EO response (chi33(2) approximately 232 pm/V at 1064 nm; r33 approximately 43 pm/V at 1550 nm).
Kang
Hu
H
Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, Illinois 60208-3113, USA.
Zhu
Peiwang
P
Yang
Yu
Y
Facchetti
Antonio
A
Marks
Tobin J
TJ