Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 142, Issue 33, Pages 14069-14073Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c06615
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Funding
- Japan Society for the Promotion of Science (JSPS) [18H05260]
- JSPS KAKENHI [17H05357, 18H04501, 20H02705]
- Nanotechnology Platform of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- LOTTE Foundation
- Kobayashi Foundation
- Grants-in-Aid for Scientific Research [20H02705, 18H04501, 17H05357] Funding Source: KAKEN
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A photochemically crushable and regenerative metal-organic framework ((MOF)-M-DTE) was developed by complexation of photochromic ligand (DTEopen)-D-Py and 5-nitroisophthalate (nip(2-)) with Cd2+ in DMF/MeOH. (MOF)-M-DTE ([Cd(nip)((DTEopen)-D-Py)-(H2O)(DMF)(2)](n)) was obtained as colorless crystals. Its crystal structure revealed that (MOF)-M-DTE adopts a tubular structure with interlocked coordination networks and can accommodate guest molecules in its one-dimensional pores. When (MOF)-M-DTE suspended in DMF/MeOH was exposed to UV light, its crystalline network, though thermally stable up to 260 degrees C, was readily crushed to afford a homogeneous blue-colored solution, via ring-closing isomerization of the constituent (DTEopen)-D-Py ligand into (DTEclosed)-D-Py. Upon successive exposure of this solution to visible light, colorless MOF crystals identical to those of (MOF)-M-DTE were regenerated. Light-responsive (MOF)-M-DTE enabled highly efficient on-demand guest release.
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