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Self-Assembly of Macrocyclic Boronic Esters Bearing Tellurophene Moieties and Their Guest-Responsive Phosphorescence |
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| Authors: | Dr. Kohei Takahashi Shunsuke Shimo Dr. Emanuel Hupf Junichi Ochiai Christina A. Braun Dr. William Torres Delgado Letian Xu Prof. Dr. Gang He Prof. Dr. Eric Rivard Prof. Dr. Nobuharu Iwasawa |
| Affiliation: | 1. Department of Chemistry, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8551 Japan;2. Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2 Canada;3. Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xian, Shaanxi Province, 710054 P.R. China |
| Abstract: | Guest-controlled diastereoselective self-assembly of a diboryltellurophene and a chiral tetrol bearing an indacene backbone was achieved to give either hetero- or homochiral macrocyclic boronic esters, selectively. The heterochiral isomer (hetero-[2+2]Te) exhibited a higher inclusion ability for electron-deficient aromatic guests, leading to effective quenching of phosphorescence from the diboryltellurophene moieties. The reported macrocycles collectively represent a promising arene sensing approach based on phosphorescence. |
| Keywords: | boronic esters host–guest systems phosphorescence supramolecular chemistry tellurophene |