Similar bindings were reported for [G.sub.3.0] PAMAM dendrimers conjugated to 1-pyrene carboxaldehyde [G.sub.3.0]-PY (as guest) and HBCD (as host) complexes (42) in which the enhanced [[lambda].sub.Max] of the
guest molecule was attributed to the host-guest interactions.
CB7 was then gradually added to the
guest molecule solution and mixed by vortexing well before the fluorescence was recorded.
An amorphous state observed during the PXRD measurement of a solid dispersion of CD and a
guest molecule suggests that there is a possibility that CD and the
guest molecule formed an inclusion complex [9, 10].
Caption: Scheme 1: Procedure for encapsulating
guest molecule into metal-organic framework.
In fact along with the compatibility of size and shape between bCD host and
guest molecule the inclusion complexation also depends upon the substitution of included cavity water molecule by the less polar guest in aqueous medium.
A clathrate is a structure in which a primary molecular species (say water, or H2O) forms a crystalline 'cage' to contain a
guest molecule (methane or CH4, for example.).
The type of structure formed is dependent on the
guest molecule size, structure I hydrates are more prevalent in natural gas flows because they form with methane, ethane and carbon dioxide molecules.
All these facts are proving the encapsulation of the
guest molecule, that is, the existence of the inclusion complex.
Namely, hydrophobic micellar interior of the sodium 3[alpha],12[alpha]-dihydroxy-7-oxo-5[beta]-cholanoate micelle, between the steroid skeleton of bile acids and resveratrol, besides the hydrophobic interactions, contains additional hydrogen bonds between C7 oxo group and OH group of the
guest molecule (Figure 3).
In other words, clathrate hydrates are clathrate compounds in which the host molecule is water and the
guest molecule is typically a gas or liquid.
The new process involved introducing a
guest molecule - in this case a 'buckyball' or C60 - on to a surface patterned by an array of tetracarboxylic acid molecules.