2020
DOI: 10.1016/j.colsurfa.2020.124649
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Reversible thermochromic polydiacetylene/Zn(II) ion assemblies prepared via co-assembling in aqueous phase: The essential role of pH

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Cited by 24 publications
(18 citation statements)
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“…The preparation under basic conditions provides reversible thermochromic MNCs with T CT ∼ 90 °C. The effect of the pH on the thermochromic behaviors is parallel with our previous study on the system of PDA/Zn 2+ assemblies …”
Section: Resultssupporting
confidence: 83%
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“…The preparation under basic conditions provides reversible thermochromic MNCs with T CT ∼ 90 °C. The effect of the pH on the thermochromic behaviors is parallel with our previous study on the system of PDA/Zn 2+ assemblies …”
Section: Resultssupporting
confidence: 83%
“…The peak at 1693 cm –1 disappears upon increasing the pH to 10, while the peak at 1540 cm –1 becomes dominant. Our previous work showed that the presence of OH – ions promoted coordination between the PDA carboxylate headgroups and Zn 2+ ions during self-assembly . The results in this study indicate that most carboxylate headgroups coordinate with the Zn 2+ ions at pH 10, providing fully reversible thermochromism.…”
Section: Resultssupporting
confidence: 52%
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“…Two bands appeared at 3500–3300 and 1638 cm –1 for MCDA-Ni , which are assignable to H 2 O vibrational frequencies (HOH), whereas these were absent in MCDA-MA (Figure a). In addition, the infrared (IR) spectrum showed a shift in the value of carbonyl ν­(CO) stretching frequency of MCDA-MA from 1691 to 1544 cm –1 in MCDA-Ni , which indicates the formation of a metal–ligand coordination complex between the carboxyl group and Ni ion, O–Ni (Figure b). , X-ray photoelectron spectroscopy (XPS) is a powerful technique for the elemental identification of all surface elements. Hence, to get more insight into metal–ligand coordination between MCDA-MA and the Ni ion, XPS analysis was performed.…”
Section: Resultsmentioning
confidence: 99%
“…Materials containing PCDA and PCDA derivatives have been successful in the detection of different metal ions, including alkali metals (lithium, sodium, , and cesium , ), transition metals (chromium­(III), manganese­(II), nickel­(II), copper­(II), zinc­(II), silver­(I), , cadmium­(II), ,, iridium­(III), gold­(III), and mercury­(II), ,, ), post-transition metals and metalloids (aluminum­(III), arsenic­(III), , tin­(IV), and lead­(II) ,, ), and the lanthanide element terbium­(III). , Many PCDA systems incorporating metal ions exhibit reversible thermochromism due to the enhanced electrostatic interactions between the cations and the carboxylate headgroup of PCDA, allowing the structural recovery of the conjugated backbone after the heat stimulus is removed . Nanocomposites comprising the intercalation of zinc oxide nanoparticles into PCDA assemblies have been studied by powder X-ray diffraction to investigate the effect of metal ions on the interlamellar d spacing of PCDA .…”
Section: Optical and Electronic Properties Of Polydiacetylenesmentioning
confidence: 99%