Self-assembled capsules of unprecedented shapes.
Self-assembled capsules of unprecedented shapes.
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DOI:
10.1002/anie.201102548
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发表时间:
2011-12-09
影响因子:
16.6
通讯作者:
Rebek, Julius, Jr.
中科院分区:
文献类型:
--
作者:
Tiefenbacher, Konrad;Ajami, Dariush;Rebek, Julius, Jr.
Reversible encapsulation allows the temporary isolation of molecules in very small spaces. There, molecular behavior is quite different than that in bulk solvent; in capsules recognition can be amplified,[1] reactive intermediates can be stabilized,[2] reactions can be accelerated [3] or even catalyzed [4] and new reaction pathways can appear.[5] Accordingly, a multitude of capsules have been devised over the last two decades. The main cohesive forces—covalent bonds,[6] hydrogen bonds [7] metals and ligands,[2a–c, 4c, 8] or simple hydrophobic effects [9]—are used to hold the capsules together and a variety of structures are available. Yet the self-assembly processes by their very nature of incorporating multiple subunits tend to create cavity shapes of high symmetry such as spheres, polyhedra and cylinders.
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