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Adv Mater. 2013 Jul 19;25(27):3664-9. doi: 10.1002/adma.201301280. Epub 2013 May 21.

Spirocyclic aromatic hydrocarbon-based organic nanosheets for eco-friendly aqueous processed thin-film non-volatile memory devices.

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  • 1Center for Molecular Systems and Organic Devices, Key Laboratory for Organic Electronics & Information Displays, Institute of Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210046, P. R. China.

Abstract

Supramolecular steric hindrance designs make pyrene-functionalized spiro[fluorene-9,7'-dibenzo[c,h]acridine]-5'-one (Py-SFDBAO) assemble into 2D nanostructures that facilitate aqueous phase large-area synthesis of high-quality and uniform crystalline thin films. Thin-film diodes using aqueous nanosheets as active layers exhibit a non-volatile bistable electrical switching feature with ON/OFF ratios of 6.0 × 10(4) and photoswitching with conductive gains of 10(2) -10(3). Organic nanosheets are potentially key components for eco-friendly aqueous dispersed organic nano-inks in the application of printed and flexible electronics.

Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

KEYWORDS:

nanocrystals; organic devices; self-assembly; spiro compounds; thin films

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