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Issue 16, 2019
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Terminal amino monomethylation-triggered intermolecular H- to J-aggregations to realize tunable memory devices

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Abstract

Since the first report on a small-molecule-based ternary memory device, most of the subsequently designed small molecules guided by the “charge trap” mechanism can exhibit the corresponding multilevel memory behaviours. However, a few small molecules with distinct electron acceptors serving as shallow and deep charge traps cannot show the typical ternary memory property; this restricts the better understanding of the “charge trap” mechanism and limits the following design of novel multilevel memory materials. In this study, through monomethylation at the terminal amino group, two small molecules with similar molecular backbone and energy levels were designed to investigate the effect of the aggregation styles on the multilevel memory behaviours. This simple monomethylation strategy not only triggers the H- to J-aggregation in thin films, but also allows tuning of the device behaviour from traditional binary memory behaviour to ternary data storage behaviour. Most importantly, this study breaks the single relationship between the structure and the function and will help us to construct the link of structure-stacking-function in the following studies.

Graphical abstract: Terminal amino monomethylation-triggered intermolecular H- to J-aggregations to realize tunable memory devices

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Publication details

The article was received on 05 Nov 2018, accepted on 25 Mar 2019 and first published on 26 Mar 2019


Article type: Paper
DOI: 10.1039/C8TC05546G
J. Mater. Chem. C, 2019,7, 4863-4869

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    Terminal amino monomethylation-triggered intermolecular H- to J-aggregations to realize tunable memory devices

    Q. Zhang, H. Li, Q. Xu, J. He, D. Chen, N. Li and J. Lu, J. Mater. Chem. C, 2019, 7, 4863
    DOI: 10.1039/C8TC05546G

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