Synthesis,Characteristic And Photochromism Of Charge-transfer Arylamine-molybdophosphoric Aicd Hybrid Materials

Four charge-transfer hybrid materials were prepared by arylamine and Keggin structure molybdophosphoric acid in liquid phase. And all hybrid materials were characterized. The property of photochromism of hybrid materials were studied. The result were as follows: 1 Make conditional experiment to prepare hybrid materials with different proportion in liquid phase. Make sure the molecular formula of hybrid materials by element analysis,ICP-AES,AAS and TG; The spectrum of IR,XRD and CV indicate the Keggin of heteropoly acid remain unchanged in the hybrid materials. 2 The spectrum of ESR and UV-vis indicate charge-transfer occur between aromatic amine and Keggin structure molybdophosphoric acid, which lead to the formation of mixed valence compound. 3 Prepare single crystal with diffusion method, only acquire the single crystal of DMA-PMo12, and analysis the fine structure of the single crystal. The result indicate aromatic amine is contacted with heteropolyacid by hydrogen bond to form two-dimensional supermolecule . 4 The photochromism of hybrid materials were different when hybrid materials was in different state. Study the property of photochromism of hybrid materials in DMF solution and PVA film respectively. The result show four hybrid materials have excellent photochromism both in DMF solution and PVA film, but the phenomenon of photochromism is different, because the mechanism is different. Have invertibility in DMF solution, can be use as erasable store materials; The complex surroundings of polymer result in irreversibility of allochroic hybrid materials, can be use as permanent memory materials.