Publication: Synthesis of color-responsive polydiacetylene assemblies and polydiacetylene/zinc(II) ion/zinc oxide nanocomposites in water, toluene and mixed solvents: Toward large-scale production
Issued Date
2021-05-20
Resource Type
ISSN
18734359
09277757
09277757
Other identifier(s)
2-s2.0-85102422736
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Mahidol University
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SCOPUS
Bibliographic Citation
Colloids and Surfaces A: Physicochemical and Engineering Aspects. Vol.617, (2021)
Suggested Citation
Aphiwat Pankaew, Nisanart Traiphol, Rakchart Traiphol Synthesis of color-responsive polydiacetylene assemblies and polydiacetylene/zinc(II) ion/zinc oxide nanocomposites in water, toluene and mixed solvents: Toward large-scale production. Colloids and Surfaces A: Physicochemical and Engineering Aspects. Vol.617, (2021). doi:10.1016/j.colsurfa.2021.126431 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/76530
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Title
Synthesis of color-responsive polydiacetylene assemblies and polydiacetylene/zinc(II) ion/zinc oxide nanocomposites in water, toluene and mixed solvents: Toward large-scale production
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Abstract
Polydiacetylenes (PDAs) are well-known materials that can be utilized as colorimetric sensors of various stimuli. PDA-based materials are normally synthesized via a self-assembly in an aqueous medium. In this study, we explored important experimental parameters including concentration, incubating temperature, and solvent media, that affected the self-assembly of monocarboxylic PDA and reversible thermochromic PDA/Zn2+/ZnO nanocomposites. The critical concentration (C*), the lowest concentration for topotactic photopolymerization in each system, was determined. We achieved, for the first time, direct synthesis of PDA/Zn2+/ZnO nanocomposites in toluene. Furthermore, it was possible to synthesize the nanocomposites at ambient conditions, simplifying the process for large-scale production. The addition of co-solvent, ethanol, resulted in a significant increase in blue-phase concentration. The presence of ethanol in the solvent medium also caused the morphological change from sheet-like to ribbon-like structures. The ability to synthesize the nanocomposite in nonpolar media allowed the fabrication of solid-state sensors by mixing with various polymers such as polyethylene, polystyrene, poly(methyl methacrylate), and poly(4-vinylpyridine). Reversible thermochromic smart inks were prepared by simple mixing with acrylic paint. Our study extends the utilization of PDA-based materials as colorimetric sensors.