We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Equilibrium shift in solution: molecular shape recognition and precipitation of a synthetic double helix using helicene-grafted silica nanoparticles.
- Authors
Miyagawa, Masamichi; Ichinose, Wataru; Yamaguchi, Masahiko
- Abstract
Chiral silica nanoparticles (70 nm) grafted with (P)-helicene recognized the molecular shape of double helix and random coil (P)-ethynylhelicene oligomers in solution. A mixture of the (P)-nanoparticles and double helix precipitated much faster than a mixture of the (P)-nanoparticles and random coil, and the precipitate contained only the double helix. The mixture of the (P)-nanoparticles and (P)-ethynylhelicene pentamer reversibly dispersed in trifluoromethylbenzene upon heating at 70 °C and precipitated upon cooling at 25 °C. When a 10:90 equilibrium mixture of the double helix and random coil in solution was treated with the (P)-nanoparticles, the double helix was precipitated in 53% yield and was accompanied by equilibrium shift.
- Publication
Chemistry (Weinheim an der Bergstrasse, Germany), 2014, Vol 20, Issue 5, p1272
- ISSN
1521-3765
- Publication type
Journal Article
- DOI
10.1002/chem.201303486