The rate of the intramolecular charge-transfer state formation has been determined for 4-(N, N-dimethylamino)-benzonitrile (DMABN) in supercritical CF3H by means of a time-correlated single-photon counting technique. The rate constant increases rapidly with increasing CF3H density, indicating the importance of the polar environment offered by the CF3H molecules which are clustering around a DMABN molecule. With increasing clustering number, the activation barrier is lowered and hence the rate increases exponentially. The observation is semiquantitatively interpreted on the basis of a molecular dynamics simulation of clustering in supercritical solutions.
|Number of pages||6|
|Journal||Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics|
|Publication status||Published - 1997 Jan 1|
- Elementary reactions
- Supercritical fluid
ASJC Scopus subject areas
- Chemical Engineering(all)