title: Conjugated donor-acceptor-acceptor (D-A-A) molecule for organic nonvolatile resistor memory.
abstract: A new donor-acceptor-acceptor (D-A-A) type of conjugated molecule, N-(4-(N',N'-diphenyl)phenylamine)-4-(4'-(2,2-dicyanovinyl)phenyl) naphthalene-1,8-dicarboxylic monoimide (TPA-NI-DCN), consisting of triphenylamine (TPA) donors and naphthalimide (NI)/dicyanovinylene (DCN) acceptors was synthesized and characterized. In conjunction with previously reported D-A based materials, the additional DCN moiety attached as end group in the D-A-A configuration can result in a stable charge transfer (CT) and charge-separated state to maintain the ON state current. The vacuum-deposited TPA-NI-DCN device fabricated as an active memory layer was demonstrated to exhibit write-once-read-many (WORM) switching characteristics of organic nonvolatile memory due to the strong polarity of the TPA-NI-DCN moiety.
authors.affiliation: Department of Chemical Engineering, National Taiwan University, Taipei 10617 (Taiwan).
authors.forename: Lei
authors.initials: L
authors.lastname: Dong
authors.forename: Guangwu
authors.initials: G
authors.lastname: Li
authors.forename: An-Dih
authors.initials: AD
authors.lastname: Yu
authors.forename: Zhishan
authors.initials: Z
authors.lastname: Bo
authors.forename: Cheng-Liang
authors.initials: CL
authors.lastname: Liu
authors.forename: Wen-Chang
authors.initials: WC
authors.lastname: Chen
keywords: charge transfer; donor-acceptor systems; imides; memory; resistance switching; triphenylamine