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Trapping and Releasing of Oxygen in Liquid by Metal–Organic Framework with Light and Heat
Author(s) -
Fujimura Masashi,
Kusaka Shinpei,
Masuda Ayaka,
Hori Akihiro,
Hijikata Yuh,
Pirillo Jenny,
Ma Yunsheng,
Matsuda Ryotaro
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202004351
Subject(s) - singlet oxygen , anthracene , adsorption , oxygen , nanoporous , molecule , photochemistry , metal , chemistry , trapping , inorganic chemistry , chemical engineering , materials science , organic chemistry , ecology , engineering , biology
Nanoporous materials can adsorb small molecules into their nanospaces. However, the trapping of light gas molecules dissolved in solvents suffers from low concentration and poor adsorption affinity. Here, the reversible trapping and releasing of dissolved oxygen are shown through integrating photosensitization and chemical capturing abilities into a metal–organic framework (MOF), MOMF‐1 . 9,10‐Di(4‐pyridyl)anthracene (dpa) ligands in MOMF‐1 generates singlet oxygen from triplet oxygen under photoirradiation without additional photosensitizers, and successively reacts with it to produce anthracene endoperoxide, forming MOMF‐2 , which is proved crystallographically. The reverse reaction also proceeds quantitatively by heating MOMF‐2 . Moreover, MOMF‐1 exhibits excellent water resistance, and completely removes oxygen of ppm order concentrations in water. The new material shown in this report allows controlling of the amount of dissolved oxygen, which can be applicable in various fields relating to numerous oxidation phenomena.