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Title: A Hexahomotrioxacalix[3]arene-Based Ditopic Receptor for Alkylammonium Ions Controlled by Ag + Ions

A receptor cone-1 based on a hexahomotrioxacalix[3]arene bearing three pyridyl groups was successfully synthesized, which has a C 3-symmetric conformation and is capable of binding alkylammonium and metal ions simultaneously in a cooperative fashion. It can bind alkylammonium ions through the π-cavity formed by three aryl rings. This behaviour is consistent with the cone-in/cone-out conformational rearrangement needed to reorganize the cavity for endo-complexation. As a C 3-symmetrical pyridyl-substituted calixarene, receptor cone-1 can also bind an Ag + ion, and the nitrogen atoms are turned towards the inside of the cavity and interact with Ag +. After complexation of tris(2-pyridylamide) derivative receptor cone-1 with Ag +, the original C 3-symmetry was retained and higher complexation selectivity for n-BuNH 3 + versus t-BuNH 3 + was observed. Thus, it is believed that this receptor will have a role to play in the sensing, detection, and recognition of Ag + and n-BuNH 3 + ions.
 [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [1]
  1. Saga Univ., Saga (Japan). Dept. of Applied Chemistry, Faculty of Science and Engineering
  2. Memorial Univ. of Newfoundland, St. John’s, NL (United States). Dept. of Chemistry
  3. Guizhou Univ., Guiyang (China). Key Lab. of Macrocyclic and Supramolecular Chemistry of Guizhou Province
  4. Loughborough Univ., Loughborough (United States). Chemistry Dept.
  5. Univ. of Hull, Hull, Yorkshire (United States). School of Mathematics and Physical Sciences
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
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Additional Journal Information:
Journal Volume: 23; Journal Issue: 2; Journal ID: ISSN 1420-3049
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; hexahomotrioxacalix[3]arene; alkylammonium ions; metal ions; ditopic receptor; allosteric effects
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