Water Soluble Molecular Capsules via Multiple Ionic Interactions

Author(s): Reza Zadmard, Hajar Entezari, Parinaz Ataeian, Maryam Mirza-Aghayan.

Journal Name: Letters in Organic Chemistry

Volume 10 , Issue 2 , 2013

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In this paper we introduced the formation of a novel type of capsules resulting from the self-association between oppositely charged complementary building blocks in H2O. The assembly is based on the interaction between tetraphosphonatcalix[4]arenes 1 and tetraammonium calix[4]arene 2 and 3. Evidence for the formation of the expected 1:1 assemblies is provided by ESI-MS. Isothermal titration calorimetry (ITC) was carried out to measure the enthalpy and entropy of complex formation for capsule 1+3, with association constants in the range of 106 M-1.

Keywords: Association constant, Calix[4]arene, ESI-MS, ITC, molecular capsule

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Article Details

Year: 2013
Page: [147 - 149]
Pages: 3
DOI: 10.2174/1570178611310020014
Price: $65

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