Release and Recovery of Guest Molecules during the Reversible Borate Gel Formation of Guest-Included Macrocyclic Boronic Esters†
Dr. Suguru Ito
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Search for more papers by this authorHisatsugu Takata
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Search for more papers by this authorDr. Kosuke Ono
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Search for more papers by this authorCorresponding Author
Prof. Dr. Nobuharu Iwasawa
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)Search for more papers by this authorDr. Suguru Ito
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Search for more papers by this authorHisatsugu Takata
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Search for more papers by this authorDr. Kosuke Ono
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Search for more papers by this authorCorresponding Author
Prof. Dr. Nobuharu Iwasawa
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)
Department of Chemistry, Tokyo Institute of Technology, and JST-CREST, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551 (Japan)Search for more papers by this authorThanks are due to Dr. Hidehiro Uekusa and Dr. Kohei Johmoto for performing X-ray analysis. This work was supported by a CREST (Core Research for Evolutional Science and Technology) project from the Japan Science and Technology Agency (JST).
Graphical Abstract
Borate gel formation from guest-encapsulated macrocyclic boronic esters was realized by the addition of a diamine to the suspension of the boronic esters in various organic solvents, which triggered the release of the guest compounds. The guest molecules could be recovered from the borate gel by addition of an acid to remove the diamine, which facilitated the reconstruction of the initial guest-encapsulated macrocyclic boronic esters.
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