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Large negative linear compressibility of a porous molecular co-crystal

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Abstract

Flexible and transformable molecules, particularly those responding to external stimuli, are needed for designing sensors and porous compounds capable of storing or separating gases and liquids. Under normal conditions the photochromic compound, 1,2-bis[2-methyl-5-(pyridyl)-3thienyl]cyclopentene (BTCP) forms a porous co-crystal with 1,4-diiodotetrafluorobenzene (dItFB). It traps acetone (Ac) molecules in the pores. Owing to a unique system of pores in the polar framework, the crystal is sensitive to the humidity in the air and to the chosen liquid environment. When compressed in non-penetrating media, the crystal displays a strong negative linear compressibility (NLC) along [100].

Graphical abstract: Large negative linear compressibility of a porous molecular co-crystal

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Article information


Submitted
17 Jan 2020
Accepted
09 Mar 2020
First published
17 Mar 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Large negative linear compressibility of a porous molecular co-crystal

S. Sobczak, A. Półrolniczak, P. Ratajczyk, W. Cai, A. Gładysiak, V. I. Nikolayenko, D. C. Castell, L. J. Barbour and A. Katrusiak, Chem. Commun., 2020, Advance Article , DOI: 10.1039/D0CC00461H

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