Hydrogen-bonded supramolecules

Design Principles of Polymer-Based Hydrogen-Bonded Supramolecules. . 118... 

Bondzic S, DeWit J, Polushkin E, Schouten AJ, Ten Brinke G, Ruokolainen J, Ikkala O, Dolbnya I, Bras W. Self-assembly of supramolecules consisting of octyl gaUate hydrogen bonded to polyisoprene-htock-poly(vinylpyridine) diblock copolymers. Macromolecules 2004 37 9517-9524. 

The related elements, proton hydrogen (H ), and hydride (H ) change their physical properties (including their size) drastically by the change of the number of electrons. Hydrogen-bond and proton-transfer interactions are the key to understanding many chemical reactions, biological activities, structure of molecular assemblies and supramolecules, functionalities in the solid state, etc. 

Gozzo, F. G. et al.. Gaseous supramolecules of imidazolium ionic liquids Magic numbers and intrinsic strengths of hydrogen bonds. Chem. Eur. J., 10, 6187,... 

Figure 7-25. Hydrogen bonding between carbonyl groups and amino N-H groups is a useful structural feature for the assembly of supramolecules. Part of the hydrogen bonding network present in the solid state lattice of the zwitterionic compound anthranilic acid is shown in a). The self-complementary hydrogen bonding possible with an amide is shown in b).

Supramolecular self-assembly can be as simple as acetic acid dimerization through mutually complementary hydrogen bonds or as complex as supramolecule formation from multiple components as demonstrated by numerous examples of resorcin[4]arene and calix[4]arene capsules. One of the more interesting directions to have been taken has been the design and synthesis of self-complementary... 

The concept where amphiphihc molecules are hydrogen bonded to one block of a block copolymer to form specific comb-shaped supramolecules allows the production of nanoporous materials in a straightforward way. The concept is illustrated in Fig. 24. The procedure was first applied to a polystyrene-bZocfc-poly(4-vinylpyridine) diblock copolymer with a stoichiometric amount of pentadecylphenol hydrogen bonded to the P4VP block. The relative block lengths were selected to render a lamellar-m-cylindrical morphology, where the P4VP(PDP) comb-shaped blocks form the cylinders... 

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