NDLI: Four Thermochromic o-Hydroxy Schiff Bases of α-Aminodiphenylmethane: Solution and Solid State Study

Content Provider	MDPI
Author	Zbačnik, Marija Pičuljan, Katarina Parlov-Vuković, Jelena Novak, Predrag Roodt, Andreas
Abstract	More than a hundred years after the first studies of the photo- and thermochromism of o-hydroxy Schiff bases (imines), it is still an intriguing topic that fascinates several research groups around the world. The reasons for such behavior are still under investigation, and this work is a part of it. We report the solution-based and mechanochemical synthesis of four o-hydroxy imines derived from α-aminodiphenylmethane. The thermochromic properties were studied for the single crystal and polycrystalline samples of the imines. The supramolecular impact on the keto-enol tautomerism in the solid state was studied using SCXRD and NMR, while NMR spectroscopy was used for the solution state. All four imines are thermochromic, although the color changes of the single crystals are not as strong as of the polycrystalline samples. One of the imines shows negative thermochromism, and that one is in keto-amine tautomeric form, both in the solid state as in solution.
File Size	18597888
File Format	PDF
e-ISSN	20734352
DOI	10.3390/cryst7010025
Journal	Crystals
Issue Number	1
Volume Number	7
Language	English
Publisher Date	2017-01-14
Access Restriction	Open
Subject Keyword	thermochromism Schiff base keto-enol tautomerism solution-based synthesis mechanosynthesis
Content Type	Text
Resource Type	Article

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Four Thermochromic o-Hydroxy Schiff Bases of α-Aminodiphenylmethane: Solution and Solid State Study