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Frictionless molecular rotary motors

  • US 8,715,635 B2
  • Filed: 02/06/2008
  • Issued: 05/06/2014
  • Est. Priority Date: 02/06/2007
  • Status: Expired due to Fees
First Claim
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1. A rotaxane comprising a host molecule and a guest molecule, said host molecule being a cucurbit[n]uril (CB[n]), and said guest molecule having the general Formula I:


  • U—

    B1-L1-[A]m-L2-B2

    Y 



    Formula Iwherein;

    n is an integer that ranges from 5 to 20;

    B1 and B2 are each independently an uncharged stopper moiety;

    L1 and L2 are each independently an uncharged linking moiety or absent;

    [A]m is a linear and rigid threading moiety having a neutral net charge at a pH that ranges from 6-8;

    whereas A is selected from the group consisting of a 1,2-ethyn-di-yl, substituted or unsubstituted cyclobuta-1,3-diene-1,3-di-yl, substituted or unsubstituted pentalene-2,5-di-yl, substituted or unsubstituted pyrene-2,7-di-yl, C-substituted or unsubstituted pyridine-2,5-di-yl, C—

    substituted or unsubstituted pyrimidine-2,5-di-yl, C-substituted or unsubstituted pyrazine-3,6-di-yl and 1,2,4,5-tetrazine-3,6-diyl, andm is an integer that ranges from 1 to 50; and

    U and Y are each independently selected from the group consisting of an anchoring group, an effector moiety, a detectible moiety, a biomolecule, or absent.

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