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Triindole-Tris-Alkynyl-Bridged Trinuclear Gold(I) Complexes for Cooperative Supramolecular Self-Assembly and Small-Molecule Solution-Processable Resistive Memories
journal contribution
posted on 2017-01-11, 16:20 authored by Eugene Yau-Hin Hong, Vivian Wing-Wah YamA novel class of
luminescent trinuclear alkynylgold(I) complexes
with N-alkyl substituted triindole ligands has been
synthesized and characterized. They are found to exhibit rich photophysical
and electrochemical properties. The complexes have been demonstrated
to display interesting supramolecular assembly with spherical nanostructures
in aqueous THF solution through a cooperative growth mechanism. The
self-assembly process is shown to be mediated by the π–π
stacking interactions and hydrophobic–hydrophobic interactions
of the triindole moieties upon solvent modulation. These gold(I) complexes
have been employed as active materials in the fabrication of solution-processable
resistive memory devices, showing promising binary memory performances
with low switching threshold voltages of ca. 1.5 V, high ON/OFF current
ratio of up to 105, long retention time of over 104 s, and excellent stability. The present work opens up a new
avenue for the future design of versatile organogold(I) complexes
that could serve as multifunctional materials.
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self-assembly processretention timeTHF solutionelectrochemical propertiesfuture design1.5 VCooperative Supramolecular Self-Assembly10 510 4supramolecular assemblyinteractionmemory performancestriindole ligandsgrowth mechanismtriindole moietiescomplexmemory devicesnovel classthreshold voltagesSmall-Molecule Solution-Processable Resistive Memoriesmultifunctional materials
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