Please use this identifier to cite or link to this item:
Title: Preparation and memory performance of a nanoaggregated dispersed red 1-functionalized poly (N-vinylcarbazole) film via solution-phase self-assembly
Authors: Zhuang, X.-D.
Chen, Y.
Liu, G. 
Zhang, B.
Neoh, K.-G. 
Kang, E.-T. 
Zhu, C.-X. 
Li, Y.-X.
Niu, L.-J.
Issue Date: 9-Sep-2010
Citation: Zhuang, X.-D., Chen, Y., Liu, G., Zhang, B., Neoh, K.-G., Kang, E.-T., Zhu, C.-X., Li, Y.-X., Niu, L.-J. (2010-09-09). Preparation and memory performance of a nanoaggregated dispersed red 1-functionalized poly (N-vinylcarbazole) film via solution-phase self-assembly. Advanced Functional Materials 20 (17) : 2916-2922. ScholarBank@NUS Repository.
Abstract: A nanoaggregated dispersed red 1-grafted poly(N-vinylcarbazole) (abbreviated PVDR) is self-assembled via π - π stacking interactions of the carbazole groups in the polymer system after adding a solution of PVDR in N,N-dimethylformamide to dichloromethane. Upon self-assembly, the nanoaggregated PVDR film displays helical columnar stacks with large grain sizes, whereas a non-aggregated PVDR film exhibits an amorphous morphology with smaller grain size. A write-once read-many-times (WORM) memory device is shown whereby a pre-assembled solution of PVDR is spin-coated as the active layer and is sandwiched between an aluminum electrode and an indium-tin-oxide (ITO) electrode. This device shows very good memory performance, with an ON/OFF current ratio of more than 105 and a low misreading rate through the precise control of the ON and OFF states. The stability of the nanoaggregated PVDR device is much higher than that of the non-nanoaggregated PVDR device. This difference in device stability under constant voltage stress can be mainly attributed to the difference in the film crystallinity and surface morphology. No degradation in current density was observed for the ON-and OFF-states after more than one hundred million (108) continuous read cycles indicating that both states were insensitive to the read cycles. These results render the nanoaggregated PVDR polymer as promising components for high-performance polymer memory devices. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Source Title: Advanced Functional Materials
ISSN: 1616301X
DOI: 10.1002/adfm.201000258
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jan 27, 2023


checked on Jan 27, 2023

Page view(s)

checked on Jan 26, 2023

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.