Mechanochromism triggered fluorescent color switching among polymorphs of a natural fluorescence pigment

A naturally occurring pigment emodin is reported here as an example to extend mechanochromic luminescent material systems. Three polymorphs, two hydrates and the amorphous state of emodin, are successfully synthesized. These solid forms exhibit significantly different fluorescence properties, which...

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Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 52; no. 75; pp. 11288 - 11291
Main Authors Li, Meiqi, Zhang, Qi, Wang, Jian-Rong, Mei, Xuefeng
Format Journal Article
LanguageEnglish
Published England 13.09.2016
Subjects
chemical reactions
color
Colors (materials)
emodin
Fluorescence
Hydrates
Pigments
Security
Switching
synthesis
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Summary:A naturally occurring pigment emodin is reported here as an example to extend mechanochromic luminescent material systems. Three polymorphs, two hydrates and the amorphous state of emodin, are successfully synthesized. These solid forms exhibit significantly different fluorescence properties, which indicates its potential application in mechano-sensors and security papers. The solid-state study of emodin demonstrates the feasibility of building new MCL systems via controlling the solid-state transition of natural fluorescent dyes.
Bibliography:Electronic supplementary information (ESI) available: Experimental sections, characterization data and crystallographic details. CCDC
10.1039/c6cc04958c
For ESI and crystallographic data in CIF or other electronic format see DOI
1482005-1482008
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1359-7345
1364-548X
1364-548X
DOI:10.1039/c6cc04958c