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. 2011 Dec 9;50(50):12003-7.
doi: 10.1002/anie.201102548. Epub 2011 Aug 26.

Self-assembled capsules of unprecedented shapes

Konrad Tiefenbacher  1 , Dariush Ajami, Julius Rebek Jr
Affiliations
Free PMC article

Self-assembled capsules of unprecedented shapes

Konrad Tiefenbacher et al. Angew Chem Int Ed Engl. .
Free PMC article
No abstract available

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Figures

Figure 1
Figure 1
a) Models of the known cylindrical capsules 1.1 and 1.24.1. b) Structure and model of glycoluril 2. c) Structure and model of propanediurea 3 used for the studies described herein. d) Structure of cavitand 1. e) Model of cavitand 1. (Peripheral alkyl and aryl groups have been deleted for easier viewing.)
Figure 2
Figure 2
Overview of the 1H NMR spectra of all assemblies formed with guests ranging from n-tetradecane to n-tricosane. The concentrations are 4.8 mm in cavitand 1, 10.4 mm in propanediurea 3 (20.8 mm in 3 for guests n-C19H40 to n-C23H48) and 24 mm in guest (148 mm for guests n-C21H44to n-C23H48) with [D12]mesitylene as solvent. The spectra were recorded at 280 K. The arrow indicates a diastereotopic CH2 group of the guest in the chiral assembly III.
Figure 3
Figure 3
Overview of the formed assemblies I to IV and their approximate accessible cavity length. (Peripheral alkyl and aryl groups have been deleted for easier viewing.)
Figure 4
Figure 4
Selective encapsulation of complementary shaped guests in assembly III and the known double-extended cylindrical capsule 1.28.1.
See this image and copyright information in PMC

References

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