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Issue 41, 2018
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Negative thermal expansion in molecular materials

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Negative thermal expansion (NTE), whereby lattices contract upon heating, is of considerable interest for its wide applications in many fields. Molecular materials have been widely investigated as catalysts, sensors, etc., which usually endure temperature vibration. NTE can become a substantial means for controlling the coefficients of thermal expansion. Molecular materials possess plentiful structures and can be easily decorated, making them ideal platforms for thermal expansion modification. In this feature article, we provide an overview of the recent developments in utilizing NTE in molecular materials and summarize some mechanisms leading to NTE. The discussion of NTE in molecular materials concerns many factors, including transverse vibration, geometric flexibility, host–guest interactions, spin crossover, molecular packing rearrangement and molecular conformational changes.

Graphical abstract: Negative thermal expansion in molecular materials

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Publication details

The article was received on 09 Feb 2018, accepted on 16 Apr 2018 and first published on 17 Apr 2018

Article type: Feature Article
DOI: 10.1039/C8CC01153B
Citation: Chem. Commun., 2018,54, 5164-5176
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    Negative thermal expansion in molecular materials

    Z. Liu, Q. Gao, J. Chen, J. Deng, K. Lin and X. Xing, Chem. Commun., 2018, 54, 5164
    DOI: 10.1039/C8CC01153B

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