Diarylethenes: Design, Synthesis And Applications In Organic Optic-electronic Devices

Photochromophores undergo a reversible photo-chemical reaction, which causes the reversible change of the absorption and/or photoluminescence spectra, oxidation and reduction potentials, dipole moment, ionization potential and carrier mobilities. Among these photochromophores, diarylethenes(DAE), due to their good thermal stability, fatigue resistance, and easy monitoring using UV-Vis spectroscopy, are intriguing candidates as the stimuli-responsive materials in organic optic-electronic devices.In this paper, a new type of air-stable OFET integrating photo-/electrical- two-mode-modulated multi-bit memory has been demonstrated, by doping a dithienylethene BMOA in the Copper(II) phthalocyaine(CuPc) active layer. The mechanism of this reversible memory behavior in devices is that photo/electrical-driven holes trapping and detrapping.In addition, the rewritable optical micro-information storage in the hybrid film doped a dithienylethene BMTA was described, due to efficient energy transfer. Moreover, optically switchable OLED integrating optical memory has been demonstrated, by doping a dithienylethene BMTA in the emitting layer. The maximum on/off ratio of luminescence is 1900. The high-resolution microimages have been fabricated by utilizing a mask-free(DMD) micro-lithography system.