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Conjugated Donor‐Acceptor‐Acceptor (D‐A‐A) Molecule for Organic Nonvolatile Resistor Memory
Author(s) -
Dong Lei,
Li Guangwu,
Yu AnDih,
Bo Zhishan,
Liu ChengLiang,
Chen WenChang
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201402981
Subject(s) - triphenylamine , moiety , acceptor , conjugated system , photochemistry , molecule , chemistry , solid state , materials science , stereochemistry , organic chemistry , polymer , condensed matter physics , physics
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.