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Abstract

A series of new aromatic polyimides, with phenylquinoxaline rings and dimethylsilane units, has been synthesized by solution polycondensation reaction of aromatic diamines containing phenylquinoxaline groups with a dianhydride incorporating dimethylsilane linkage, namely bis (3,4-dicarboxyphenyl) dimethylsilane dianhydride. All polymers were easily soluble in organic solvents, such as N-methylpyrrolidinone, dimethylacetamide, pyridine and chloroform, and showed high thermal stability with decomposition temperature being above 480° C and glass transition temperature in the range of 245-266 'C. Very thin coatings were deposited from polymer solutions onto silicon wafers and exhibited smooth, pinhole-free surface in atomic force microscopy investigations. These polymers showed blue fluorescence in solution and films, with a maximum in the range of 415-425 nm.

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New Silicon-Containing Phenylquinoxaline-Imide Polymers

Abstract

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