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The multi-stimuli-responsiveness of a novel polydiacetylene-based supramolecular gel


Herein, a novel supramolecular gel was fabricated through the bi-components co-assembly strategy of commercially available 10,12-Pentacosadiynoic acid (PCDA) and laboratory-synthesized amphiphilic co-gelator N-(2-(1H-imidazol-4-yl)ethyl)stearamide (IMSA), which contains one imidazole head group and a long alkyl chain tail, by synergetic noncovalent interactions. Upon irradiation of normal 254 nm UV light, blue polydiacetylene (PDA) could be obtained by topo-polymerization of the PCDA monomers in the gel phase. This PDA-based supramolecular gel could respond to various environmental stimuli and show blue-to-red chromatic transition, which could be observed by naked eyes. Specifically, upon exposure to heat, pH, metal cations and organic solvents stimuli, the PDA gel would display thermochromism, halochromism, ionochromism and solvatochromism, respectively. More interestingly, the differences of the above-mentioned stimuli-induced color transition of blue PDA supramolecular gels could be characterized by UV-Vis absorption spectra and Raman spectra, therefore illuminating a bright application prospect in the area of chemosensing.

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Publication details

The article was received on 25 Jul 2018, accepted on 09 Sep 2018 and first published on 10 Sep 2018

Article type: Paper
DOI: 10.1039/C8SM01515E
Citation: Soft Matter, 2018, Accepted Manuscript
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    The multi-stimuli-responsiveness of a novel polydiacetylene-based supramolecular gel

    Y. Xu, S. Fu, F. Liu, H. Yu and J. Gao, Soft Matter, 2018, Accepted Manuscript , DOI: 10.1039/C8SM01515E

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