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. 2022 Feb 17;27(4):1370. doi: 10.3390/molecules27041370

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Plot of absorbance vs. wavelength for the forward (trans–cis) isomerisation in DMF (50 ppm) for (a) Al-AZB and (c) Zr-AZB. Plot of absorbance vs. wavelength in CHCl₃ (50 ppm) for (b) Al-AZB and (d) Zr-AZB. Plot of ln(A_inf - A_t) vs. time for Al-AZB and Zr-AZB in (e) DMF and (f) CHCl₃.