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Channel hosts cyclodextrin complexes

Figure 3. Schematic representations of the possible modes of controlling the permeability through an ordered layer of a long alkyl chain derivative of cyclodextrin by host-guest complexation. (a) Control of permeation through intermolecular voids, (b) Control of permeation through intramolecular channels. (Adapted from ref 14.)... Figure 3. Schematic representations of the possible modes of controlling the permeability through an ordered layer of a long alkyl chain derivative of cyclodextrin by host-guest complexation. (a) Control of permeation through intermolecular voids, (b) Control of permeation through intramolecular channels. (Adapted from ref 14.)...
The cyclodextrins also form channel-type complexes, in which the host... [Pg.113]

Recently, it has become clear to the author that cyclodextrin is one of the promising hosts for macromolecular recognition, with the finding that the cylindrical channel formed when it is stacked in a linear row is able to accommodate one or more long-chain guests. Thus, he and his coworkers launched a series of experiments to explore the formation of inclusion complexes between... [Pg.142]

The cyclodextrins also form channel-type complexes, in which the host molecules are stacked on top of each other, like coins in a row.110 For example, a-cyclodextrin (cydo-hexaamylose) forms cage complexes with acetic, propionic, and butyric acids, but channel complexes with valeric and higher acids. [Pg.91]

FIGURE 13.6, Scattering curves for the host and guest molecules in a / -cyclodextrin (host) - 2iV-acetylphenylalanine methyl ester (guest) complex. Data for the host (J cyclodextrin) are indicated by solid lines, and for the guest (the methyl ester) by broken lines. The guest is somewhat disordered in the channel provided by the more ordered structure of the crystallized host (Ref. 24). [Pg.532]

Host inolecules may be broadly classified into two main types those that form molecular complexes by fitting convex guests into the concave cavity of the host (examples include cyclodextrins, cyclophanes. calixar-enes, cycloveratrylenes, and various carcerands ) and those that form lattice inclusion compounds by packing in such a manner as to leave cavities, channels, or layers in the crystal structure so as to accommodate various guest... [Pg.696]

Various classes of compounds, including montmorillonite and cyclodextrin, are known to serve as host compounds having several types of inclusion spaces, such as three-dimensional cages, single or parallel channels and layers [3]. In spite of the variety of host compounds, little attention has been paid to the possible complexation of two or more host components of different kinds all inclusion... [Pg.807]


See other pages where Channel hosts cyclodextrin complexes is mentioned: [Pg.111]    [Pg.216]    [Pg.89]    [Pg.216]    [Pg.305]    [Pg.129]    [Pg.153]    [Pg.57]    [Pg.123]    [Pg.75]    [Pg.309]    [Pg.179]    [Pg.23]    [Pg.103]    [Pg.225]    [Pg.772]    [Pg.43]    [Pg.44]    [Pg.159]    [Pg.2038]    [Pg.517]    [Pg.133]   


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Channel hosts

Complexation cyclodextrine

Complexation, cyclodextrins

Cyclodextrin complexation

Cyclodextrin complexes

Cyclodextrin complexes cyclodextrins

Cyclodextrin hosts

Host complex

Host complexation

Hosts cyclodextrins

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