Please use this identifier to cite or link to this item:
Title: Synthesis and memory performance of a conjugated polymer with an integrated fluorene, carbazole and oxadiazole backbone
Authors: Zeng, L.-J.
Liu, G. 
Zhang, B.
Chen, J.
Chen, Y.
Kang, E.-T. 
Keywords: donor-acceptor system
molecular devices
polymer memory
Issue Date: Mar-2012
Citation: Zeng, L.-J., Liu, G., Zhang, B., Chen, J., Chen, Y., Kang, E.-T. (2012-03). Synthesis and memory performance of a conjugated polymer with an integrated fluorene, carbazole and oxadiazole backbone. Polymer Journal 44 (3) : 257-263. ScholarBank@NUS Repository.
Abstract: A new soluble conjugated polymer, poly9-(4-methoxyphenyl)-9H-carbazole(9,9- dioctylfluorene)(2,5-diphenyl-1,3,4-oxadiazole)(PCFO), was synthesized through the Suzuki coupling reaction. The absolute fluorescence quantum yield of PCFO was measured using the integrating sphere of a photoluminescence spectrofluorometer, and changed from 49.1% for a dilute tetrahydrofuran solution to 16.2% for a thin film due to the existence of a strong fluorescence quenching effect in the solid state. The HOMO-LUMO bandgap (3.07 eV) calculated from the electrochemical measurement is nearly identical to the optical bandgap (3.06 eV) estimated from the ultraviolet/visible absorption onset data. This film was attached to aluminum and indium-tin oxide contacts to fabricate a memory device with typical bistable electrical switching, nonvolatile write-once read-many-times memory performance, a turn-on voltage of ∼-2.3 V and an ON/OFF ratio of ∼10 5. Degradation of the current density was observed for neither the ON nor OFF states after one hundred million continuous read cycles, which indicates that both states were insensitive to read cycles. © 2012 The Society of Polymer Science, Japan (SPSJ) All rights reserved.
Source Title: Polymer Journal
ISSN: 00323896
DOI: 10.1038/pj.2011.114
Appears in Collections:Staff Publications

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


checked on Dec 12, 2018


checked on Dec 12, 2018

Page view(s)

checked on Nov 2, 2018

Google ScholarTM



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