Synthesis and properties of colorless copolyimides derived from 4,4′-diaminodiphenyl ether-based diamines with different substituents

Colorless polyimide (PI) films with outstanding mechanical and thermal properties are highly demanded in flexible electronics. Herein three 4,4′-diaminodiphenyl ether ( ODA )-based diamines with different substituents (-CH 3 , -CF 3 ) and substitution positions ( ortho and meta positions) were synth...

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