Photorefractivity in a functional side-chain polymer

Abstract

An experimental study of the photorefractive effect in a polymeric material containing carbazole and the second-order tricyanovinylcarbazole moieties as a side chain is presented. This polymeric system exhibits intrinsically both photoconductivity and the electro-optic effect. Absorptive and photorefractive gratings have been evidenced by four-wave-mixing experiments and electro-optic measurements. The properties of the photorefractive gratings are studied by investigating the electric-field dependence of the diffraction efficiency. The dynamics of the erase-write behavior of the gratings, as well as permanent photobleaching of the polymer, are described.

RAFT “grafting-through” approach to surface-anchored polymers: Electrodeposition of an electroactive methacrylate monomer

“…In our group, carbazolecontaining polymers and dendrimers have been synthesized and studied [24][25][26][27][28] because of their potential applications on electroluminescent devices [29][30][31], photorefractive materials [32,33], electrochromic materials [34,35], and memory devices [36]. In all the above applications, the main use of carbazole-derivatized polymers for electro-optical function involves efficient hole transport, good solution processing properties, and high chemical stability [37][38][39][40].…”

Materials Design and Physics of Organic Photorefractive Systems

“…Fully functionalized photorefractive materials. The upper system is a carbazole-tricyanovinylcarbazole polymer [60] (an inert methacrylate chain functionalized with photoconductive and electro-optic side groups) whereas the lower structure shows a polysilane system in which the main chain serves as the photoconductor. [58] Most fully functionalized polymers (FFPs) have glass transition temperatures which are higher than room temperature (up to 50 8C), so that orientational enhancement plays only a reduced role.…”

Synthesis and properties of polysiloxane-based electrooptic materials

“…14,15 The third class consists of polymers in which all functionalities are incorporated covalently. 16,17 The composite systems enjoy ease of preparation; but they also have problems. For example, these systems require high small-molecule dopant loading levels, resulting in some major disadvantages, including diffusion, volatilization, phase separation of the dopants, and the instability of electrooptical activities; hence, it is desirable to synthesize photorefractive polymers in which all of the required species are covalently attached.…”