Synthesis, characterization, and photoresponsive behavior of a series of azobenzene-containing side-chain poly(ether sulfone)s with various lengths of flexible spacers

Preparation and performance of crosslinked poly(arylene ether)s containing azobenzene chromophores

“…The experimental setup for photoinduced birefringence experiment has been described by our group previously [ 17 ], and only some details are given here. The photoinduced birefringence was evaluated by a pump-probe optical system, which was made up of writing processes (linearly polarized pump on), relaxation processes (pump off), and erasing processes (circularly polarized pump on).…”

“…Functionalized poly(arylene ether)s have received considerable attention due to their potential applications in nonlinear optical materials, fluorescent material and proton-exchange membranes [ 14–16 ]. In our previous work, we have reported some azobenzene-containing poly(arylene ether)s and investigated their optical properties [ 17–20 ]. However, when the excitation light was turned off, photoinduced birefringence of the polymers always exhibit a little decay, which affects the stability of optical storage.…”

Characterization of poly(amic acid)s and resulting polyimides bearing azobenzene moieties including investigations of thermal imidization kinetics and photoinduced anisotropy

“…2,4‐Diamino‐4′‐methylazobenzene and 2,2‐[ N ′‐phenylethylaniline‐di(4‐estro‐1,2‐dicarboxylic)]anhydride were synthesized according to our previous work . 4,4′‐Diaminoazobenzene was prepared according to a published procedure ( 1 H NMR (DMSO‐ d 6 ; δ , ppm): 5.71 (s, H 2 N, 4H), 6.61 (d, ArH, 4H), 7.51 (d, ArH, 4H); m.p. (DSC) = 250 °C; yield = 52.43%).…”

“…Our interest, as well as that of other research groups, is focused on systematic studies of the relationship between chemical structure, i.e. various chemical factors, and relevant physicochemical properties, including photoinduced anisotropy, from the point of view of applications of such materials in the fabrication of photonic structures or for holographic optical information storage . Our investigations may lead to better understanding of the relationship between chemical structure and photoinduced phenomena, mainly holographic recording of diffraction gratings.…”

Poly(arylene ether)s with aromatic azo-coupled cobalt phthalocyanines in the side chain: synthesis, characterization and nonlinear optical and optical limiting properties

“…Functionalized PAEs have received considerable attention due to their potential applications in optical storage materials, uorescent materials and proton-exchange membrane. [26][27][28][29] However, only a little nonlinear optical materials and optical limiting materials based on PAEs have been reported, [30][31][32] which need more development and research. In this paper, a novel optical limiting material with good thermal stability was designed and synthesized by introducing azobenzene chromophores and cobalt phthalocyanines into PAEs system.…”