Format

Send to

Choose Destination
See comment in PubMed Commons below
Science. 2009 Jun 26;324(5935):1697-9. doi: 10.1126/science.1175313.

White phosphorus is air-stable within a self-assembled tetrahedral capsule.

Author information

1
Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.

Abstract

The air-sensitive nature of white phosphorus underlies its destructive effect as a munition: Tetrahedral P4 molecules readily react with atmospheric dioxygen, leading this form of the element to spontaneously combust upon exposure to air. Here, we show that hydrophobic P4 molecules are rendered air-stable and water-soluble within the hydrophobic hollows of self-assembled tetrahedral container molecules, which form in water from simple organic subcomponents and iron(II) ions. This stabilization is not achieved through hermetic exclusion of O2 but rather by constriction of individual P4 molecules; the addition of oxygen atoms to P4 would result in the formation of oxidized species too large for their containers. The phosphorus can be released in controlled fashion without disrupting the cage by adding the competing guest benzene.

PMID:
19556504
DOI:
10.1126/science.1175313
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Support Center