Based on the 9,9-di(4-anilinyl)fluorene, structurally different fluorene-polyimino ketones have been obtained by the Buchwald-Hartwig cross coupling reaction. Their structure and performance have been characterized by FT-IR, 1 H NMR, UV-vis and thermal analysis. The results show an agreement with the proposed structure, which possesses high glass transition temperature (T g ＞250 ℃) and good thermal stability with high decomposition temperatures in nitrogen atmosphere (T D ＞520 ℃). Additionally, the polymers synthesized showed good solubility, which can be dissolved in common organic solvent CHCl 3 at room temperature.

Polymers V 0800Synthesis of Soluble Fluorene-Polyimino Ketone. -Aromatic polyimino ketones (PIK) are new high performance polymers with good thermal, mechanical, and chemical resistance properties. The synthesized PIK's are soluble in common organic solvents like chloroform and THF. -(LUO, X.; CHANG, G.; WANG, Q.; JIAO, W.; ZHANG*, L.; LIN, R.; Chin.

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