Issue 11, 2017

Molecular conformation and packing: their critical roles in the emission performance of mechanochromic fluorescence materials

Abstract

Mechanochromic fluorescence (MCF) materials are a sort of smart material whose photophysical properties are sensitive to mechanical stimulation, such as photoluminescence color, fluorescence quantum yield and emission lifetime. Recently, an increasing number of studies have shown that these photophysical properties can be affected greatly by the molecular packing and conformation, enabling the rapid development of functional materials with mechanochromic fluorescence properties. In this review, we focus on MCF materials with distinct emission properties and various molecular arrangements, especially the inherent correlation between molecular packing modes and emissive behaviors. Many of the selected representative examples possess polymorphism, offering the possibility of exploring different emissions from the exact molecular packing in single crystals. Correspondingly, some remarks are made on the outlook for the next developments in MCF materials and the required thinking about the structure–packing–performance relationship.

Graphical abstract: Molecular conformation and packing: their critical roles in the emission performance of mechanochromic fluorescence materials

Article information

Article type
Review Article
Submitted
06 May 2017
Accepted
06 Jun 2017
First published
07 Jun 2017

Mater. Chem. Front., 2017,1, 2174-2194

Molecular conformation and packing: their critical roles in the emission performance of mechanochromic fluorescence materials

C. Wang and Z. Li, Mater. Chem. Front., 2017, 1, 2174 DOI: 10.1039/C7QM00201G

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