Publication:
Controlling self-assembling and color-transition of polydiacetylene/zinc(II) ion/zinc oxide nanocomposites by varying pH: Effects of surface charge and head group dissociation

2

Issued Date

2019-04-25

Resource Type

Article

ISSN

22345957
1226086X

DOI

10.1016/j.jiec.2018.12.045

Other identifier(s)

2-s2.0-85059449589

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Journal of Industrial and Engineering Chemistry. Vol.72, (2019), 423-431

Suggested Citation

Supakorn Seetha, Rungarune Saymung, Rakchart Traiphol, Nisanart Traiphol Controlling self-assembling and color-transition of polydiacetylene/zinc(II) ion/zinc oxide nanocomposites by varying pH: Effects of surface charge and head group dissociation. Journal of Industrial and Engineering Chemistry. Vol.72, (2019), 423-431. doi:10.1016/j.jiec.2018.12.045 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/50512

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Title

Controlling self-assembling and color-transition of polydiacetylene/zinc(II) ion/zinc oxide nanocomposites by varying pH: Effects of surface charge and head group dissociation

Author(s)

Supakorn Seetha
 Rungarune Saymung
 Rakchart Traiphol
 Nisanart Traiphol

Other Contributor(s)

Chulalongkorn University
 Mahidol University

Abstract

© 2019 The Korean Society of Industrial and Engineering Chemistry Polydiacetylene/zinc(II) ion/zinc oxide (PDA/Zn2+/ZnO) nanocomposite exhibits reversible thermochromism and dual colorimetric response to acid/base. This contribution presents our ongoing development of the PDA/Zn2+/ZnO nanocomposite for sensing applications by controlling ZnO surface charge and dissociation of PDA headgroup via pH adjustment. At pH >10, negative ZnO surface charge and PDA carboxylate headgroup significantly enhance molecular organization during the self-assembling process. An increase of the nanocomposite amount after photopolymerization is observed. Oppositely, pH <6 results in irreversible-thermochromic nanocomposites. Additionally, the nanocomposites prepared at different pH change color at different concentrations of chemical stimuli. Molecular packing, local interactions and PDA conformation are investigated.

Keyword(s)

Chemical Engineering

Availability

URI

https://repository.li.mahidol.ac.th/handle/123456789/50512

Collections

Scopus 2019