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Nature Research, Communications Chemistry, 1(3), 2020

DOI: 10.1038/s42004-020-0279-0

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Color polymorphism in organic crystals

Journal article published in 2020 by Bernardo A. Nogueira ORCID, Chiara Castiglioni, Rui Fausto
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

AbstractColor polymorphism is an interesting property of chemical systems which present crystal polymorphs of different colors. It is a rare phenomenon, with only a few examples reported in the literature hitherto. Nevertheless, systems exhibiting color polymorphism have many potential applications in different domains, such as pigment, sensor, and technology industries. Here, known representative chemical systems showing color polymorphism are reviewed, and the reasons for them to present such property discussed. Also, since some of the concepts related to color polymorphism have been frequently used imprecisely in the scientific literature, this article provides concise, systematic definitions for these concepts.