Title

Photoinduced Protonation Of Polyaniline Assisted By Hydrogen-Bonding Materials

Keywords

Conductivity; Hydrogen bonding; Photo-acid generator; Poly(vinyl alcohol); Polyaniline

Abstract

Composites of the emeraldine base form of polyaniline (PANI-EB) and photo-acid generators (PAGs) increase their conductivities upon photo-irradiation due to protonation of PANI-EB. Such materials may be utilized to fabricate conducting patterns by photo-irradiation. However, the conductivity obtained by direct irradiation of PANI-EB/PAG composites was normally quite low, and conductivity above 10-3 S cm-1 often required post-treatment with HCl. In this work, poly(vinyl alcohol) (PVA), which can form a hydrogen bonding network, was added to PANI-EB/PAG. Results showed that PVA enhanced film quality, conductivity and reproducibility. Photo-induced conductivity of 10-2 S cm-1 was obtained when the ratio of PANI-EB/PVA/PAG was 1:1:0.6. A novel PAG, bis(p-hydroxyphenyl) phenylsulfoniumtriflate [(PhOH)2PhS+ OTf-], which can form hydrogen bonds with PANI was synthesized and mixed with PANI-EB. A composite of PANI-EB and the PAG with a ratio of 1:0.5 achieved a conductivity of 10-1 S cm-1 after irradiation. However, the initial conductivity before irradiation was as high as 10-5 S cm-1 due to relatively high acidity of the PAG. © 2011 Elsevier B.V. All rights reserved.

Publication Date

7-1-2011

Publication Title

Synthetic Metals

Volume

161

Issue

13-14

Number of Pages

1420-1423

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.synthmet.2011.05.013

Socpus ID

79959950486 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79959950486

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