Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion Complexes

Vapochromic materials, which change color and luminescence when exposed to specific vapors and gases, have attracted considerable attention in recent years owing to their potential applications in a wide range of fields such as chemical sensors and environmental monitors. Although the mechanism of v...

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Main Authors: Toshikazu Ono, Yoshio Hisaeda
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Symmetry
Subjects:
Online Access:https://www.mdpi.com/2073-8994/12/11/1903
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author Toshikazu Ono
Yoshio Hisaeda
author_facet Toshikazu Ono
Yoshio Hisaeda
author_sort Toshikazu Ono
collection DOAJ
description Vapochromic materials, which change color and luminescence when exposed to specific vapors and gases, have attracted considerable attention in recent years owing to their potential applications in a wide range of fields such as chemical sensors and environmental monitors. Although the mechanism of vapochromism is still unclear, several studies have elucidated it from the viewpoint of crystal engineering. In this mini-review, we investigate recent advances in the vapochromism of organic crystals. Among them, macrocyclic molecules and inclusion complexes, which have apparent host–guest interactions with analyte molecules (specific vapors and gases), are described. When the host compound is properly designed, its cavity size and symmetry change in response to guest molecules, influencing the optical properties by changing the molecular inclusion and recognition abilities. This information highlights the importance of structure–property relationships resulting from the molecular recognition at the solid–vapor interface.
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spelling doaj.art-da8b377f9b6d4f69a193284822a01f082023-11-20T21:36:01ZengMDPI AGSymmetry2073-89942020-11-011211190310.3390/sym12111903Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion ComplexesToshikazu Ono0Yoshio Hisaeda1Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, JapanDepartment of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, JapanVapochromic materials, which change color and luminescence when exposed to specific vapors and gases, have attracted considerable attention in recent years owing to their potential applications in a wide range of fields such as chemical sensors and environmental monitors. Although the mechanism of vapochromism is still unclear, several studies have elucidated it from the viewpoint of crystal engineering. In this mini-review, we investigate recent advances in the vapochromism of organic crystals. Among them, macrocyclic molecules and inclusion complexes, which have apparent host–guest interactions with analyte molecules (specific vapors and gases), are described. When the host compound is properly designed, its cavity size and symmetry change in response to guest molecules, influencing the optical properties by changing the molecular inclusion and recognition abilities. This information highlights the importance of structure–property relationships resulting from the molecular recognition at the solid–vapor interface.https://www.mdpi.com/2073-8994/12/11/1903vapochromismfluorescencemacrocyclesinclusion crystalshost–guest chemistry
spellingShingle Toshikazu Ono
Yoshio Hisaeda
Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion Complexes
Symmetry
vapochromism
fluorescence
macrocycles
inclusion crystals
host–guest chemistry
title Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion Complexes
title_full Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion Complexes
title_fullStr Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion Complexes
title_full_unstemmed Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion Complexes
title_short Vapochromism of Organic Crystals Based on Macrocyclic Compounds and Inclusion Complexes
title_sort vapochromism of organic crystals based on macrocyclic compounds and inclusion complexes
topic vapochromism
fluorescence
macrocycles
inclusion crystals
host–guest chemistry
url https://www.mdpi.com/2073-8994/12/11/1903
work_keys_str_mv AT toshikazuono vapochromismoforganiccrystalsbasedonmacrocycliccompoundsandinclusioncomplexes
AT yoshiohisaeda vapochromismoforganiccrystalsbasedonmacrocycliccompoundsandinclusioncomplexes