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Novel polyimide-Yb complexes (PIYbCs) with high dielectric constant, low dielectric loss and low AC conductance were developed in this study. The PIYbCs were successfully prepared by thermal conversion from bipyrimidine contained polyamic acid with different amounts of Yb. The PIYbCs (molar ratio of Yb to bipyrimidine units=1:1) have shown high dielectric constant (above 150), low dielectric loss...
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