Abstract
MOST CHEMISTS WOULD CONsider a 5-mL round-bottom 1 flask an appropriate vessel for a small-scale reaction. But for the researchers in Makoto Fujita's lab, that's about a million times too big. Fujita, a chemistry professor at the University of Tokyo, and his colleagues have been making nanoscale reaction chambers just 5 nm wide. Their latest invention—a tiny cage lined with 24 perfruorinated carbon chaim—offers a finery tuned environment for fluorous chemistry ( Science 2006,313 ,1273) There are many other examples of fluorous microenvironments, notes chemistry professor John A. Gladysz of Friedrich-Alexander University, Erlangen, Germany, in a commentary on the report. However, none of these assemblies features the elegant design elements and the degree of molecular control that characterize,, Fujita's complexes. Fujita's team designed an arrow- shaped molecule as their structure's basic building block. A bridging ligand forms the arrowhead, which attaches to a long fluorocarbon tail. In solution, 24 of...
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