Volume 55, Issue 26 pp. 7478-7482
Communication

Visualizing the Dynamics of Temperature- and Solvent-Responsive Soft Crystals

Jiandong Pang

Jiandong Pang

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Caiping Liu

Dr. Caiping Liu

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

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Dr. Yougui Huang

Dr. Yougui Huang

Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, 8190395 Japan

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Prof. Mingyan Wu

Corresponding Author

Prof. Mingyan Wu

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

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Prof. Feilong Jiang

Prof. Feilong Jiang

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

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Prof. Daqiang Yuan

Corresponding Author

Prof. Daqiang Yuan

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

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Falu Hu

Falu Hu

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Kongzhao Su

Dr. Kongzhao Su

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

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Guoliang Liu

Guoliang Liu

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Prof. Maochun Hong

Prof. Maochun Hong

State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, 350002 Fujian, China

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First published: 04 May 2016
Citations: 67

Graphical Abstract

See the shrink: A record high uniaxial positive thermal expansion coefficient of 653.2×10−6 K−1 and large c-axial shrinkage of 32.4 %, is found for metal–organic framework (MOF) temperature- and solvent-responsive soft crystals. The dynamic process can both be visualized by in situ single-crystal X-ray snapshot analyses. The stimuli-responsive mechanism results from rotations and deformations of the organic linkers.

Abstract

We demonstrate that three flexible MOFs termed FJI-H11-R (FJI-H=Hong's group in Fujian Institute of Research on the Structure of Matter, R=Me, Et, iPr) can reversibly respond to temperature and solvents via structural transformations, which can be visualized by in situ single-crystal X-ray snapshot analyses. FJI-H11-R exhibit colossal anisotropic thermal expansion, with a record-high uniaxial positive thermal-expansion coefficient of 653.2×10−6 K−1 observed in FJI-H11-Me. Additionally, large c-axial shrinkage of 32.4 % is also observed during desolvation. The stimuli-responsive mechanism reveals the structural evolutions are related to the rotations and deformations of the organic linkers.

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