A study of binding interactions between terpyridine derivatives and cucurbit[10]uril |
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| Authors: | Yuanyuan Deng Hang Yin Zhiyong Zhao Ruibing Wang |
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| Institution: | 1. The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, China;2. State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China |
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| Abstract: | The binding interactions of a series of 2,2′:6′,2″-terpyridine (TPY) derivatives and their metal complexes with cucurbit10]uril (CB10]) were investigated by 1H NMR, UV/Vis, emission spectroscopy, and ESI mass spectrometry. 1H NMR titrations revealed CB10] could encapsulate methylated TPY (MTPY), and the binding ratio between guest MTPY and host was 1:1 and 2:1 via ESI-MS characterization. For the transition metal complexes composed of Fe(II) or Ru(II) or Rh(III) and TPY derivatives, the octahedral TPY?metal?TPY core can be included in the cavity of CB10]. Three binding modes (1:1, 1:2 and 1:3) have been detected for the binding of the metal?MPTY complexes with CB10] by ESI-MS. |
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| Keywords: | Host–guest interaction cucurbit[n]urils metal–terpyridine complex encapsulation |
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