synthesis and Characterization of Triarylmethane Resin

Chinese Journal of Applied Chemistry ›› 1997, Vol. 0 ›› Issue (3): 74-77.

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synthesis and Characterization of Triarylmethane Resin

Ruan Xiangquan, Dong Yi, Zheng Jiaming

Department of Chemical Engineering, Tianjin University, Tianjin 300072

Received:1996-10-28 Revised:1997-03-28 Published:1997-06-10 Online:1997-06-10

Abstract

Abstract: The B stage codensed polynuclear aromatic resin(B-COPNA)was synthesized from pyrene and benzaldehyde in the presence of p-toluenesulfonic acid. Its structure was characterized by IR, ¹H NMR and ¹³C NMR measurements. Results showed that the polymer possesses triarylmethane structure. On heating under inert gas at 500℃, 600℃ and 800℃ COPNA resin dehydrogenated and converted to an insoluble and infusible one, which, as ESR results shows, exhibits an obvious paramagnetic property and very high concentration of stable free radicals: 2.28×10²² spins/g.

Key words: condensed polynuclear aromatic resin, triarylmethane resin, synthesis, characterization, ferromagnetic property, stable free-radicals

Ruan Xiangquan, Dong Yi, Zheng Jiaming. synthesis and Characterization of Triarylmethane Resin[J]. Chinese Journal of Applied Chemistry, 1997, 0(3): 74-77.

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