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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10631

Title: Synthesis of oligomeric poly[(1, 2-propanediamine)-alt-(oxalic acid)] and anomalous proton conductivities of the thin films
Authors: Nagao, Yuki
Naito, Nobuhiro
Iguchi, Fumitada
Sata, Noriko
Yugami, Hiroo
Keywords: proton conduction
thin films
thickness dependence
Issue Date: 2008-11-13
Publisher: Elsevier
Magazine name: Solid State Ionics
Volume: 180
Number: 6-8
Start page: 589
End page: 591
DOI: 10.1016/j.ssi.2008.09.022
Abstract: New proton-conductive polyamide oligomers, oligomeric poly[(1,2-propanediamine)-alt-(oxalic acid)], were synthesized to investigate the proton transport properties of bulk and thin films. The obtained oligomers were characterized by the X-ray diffraction, FT-IR spectra, ^<1>H NMR, Matrix Assisted Laser Desorption / Ionization Time of Flight (MALDI-TOF) mass spectrum, and electrical conductivity measurements. The bulk proton conductivity is 3.0 × 10^<-4> S cm^<-1> at the relative humidity (RH) of 80 %. The proton conductivity of thin film is relatively higher than that of bulk sample. Thickness dependence of the proton conductivity was observed in these thin films. The maximum proton conductivity of the thin film is 4.0 × 10^<-3> S cm^<-1> at the relative humidity (RH) of 80 %, which is higher one order magnitude than that of the bulk sample. The activation energies of bulk and 200 nm thick film are 1.0 and 0.69 eV at the RH of 60 %, respectively.
Rights: NOTICE: This is the author's version of a work accepted for publication by Elsevier. Yuki Nagao, Nobuhiro Naito, Fumitada Iguchi, Noriko Sata, Hiroo Yugami, Solid State Ionics, 180(6-8), 2008, 589-591, http://dx.doi.org/10.1016/j.ssi.2008.09.022
URI: http://hdl.handle.net/10119/10631
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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