Synthesis and Memory Device Applications of Novel Triphenylamine Moiety Based High-Performance Polymers

This study has been separated into five chapters. Chapter 1 is general introduction. Chapter 2 includes two distinct approaches to synthesize the active layer in the application of memory devices. The first one is introducing PCBM as the acceptor via blending into the donor-containing poly-4-methoxytriphenylamine (P-TPA) leading the donor-acceptor hybrid films P-TPA:PCBM, another one is incorporating the acceptor anthraquinone via covalent bond to the electron-donating moiety then resulting donor-acceptor containing polymers poly-2-diphenylaminoanthracene-9,10-dione (P-TPAAQ) and poly-2-(4-diphenylaminophenoxy)anthracene-9,10-dione (P-TPAOAQ). Chapter 3 describes the memory devices based on dual competitive electron acceptors system with novel electron-donating triphenylamine (TPA) based electroactive functional polyimides AQ-PIs and OAQ-PIs derived from two diamines, 2-(bis(4-aminophenyl)amino)anthracene-9,10-dione and 2-(4-(bis(4-aminophenyl)amino)phenoxy)anthracene-9,10-dione, respectively, having electron-withdrawing pendent anthraquinone moiety. Chapter 4 describes the structurally related TPA-based polyimides (PIs), polyamides (PAs), and polyethers (PEs) with different donor-linkage-acceptor (D-L-A) units for the systematical study and comparison of both linkage and acceptor effects on the memory behaviors. The synthesis and basic characterization of the obtained aromatic TPA-based polymers were described. Chapter 5 contains conclusions. Besides, the memory characteristics were investigated by I-V measurements and compared. The corresponding morphology study, optical characteristic, electrochemical and spectroelectrochemical properties, and theoretical analysis results were used to demonstrated that the resulting memory behaviors could be elucidated by the charge-transfer mechanism.