| Issue |
EPL
Volume 84, Number 6, December 2008
|
|
|---|---|---|
| Article Number | 67005 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/84/67005 | |
| Published online | 12 January 2009 | |
Optically induced angular motion of single-molecules
1
Laboratoire de Photonique Quantique et Moléculaire, Ecole Normale Supérieure de Cachan 61 avenue du Président Wilson, 94235 Cachan Cedex, France, EU
2
Institute of Physics, Wroclaw University of Technology - Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland, EU
Received:
11
August
2008
Accepted:
14
November
2008
Optically induced angular motion of individual molecules exhibiting both fluorescence and photo-isomerization properties is investigated in polymer films, by means of a polarized resonant optical pump and probe scheme. The single-molecule dynamics is analyzed using a kinetic model accounting for both photo-isomerization and thermal diffusion phenomena. This study shows that the process is strongly diffusion driven and reveals the relevant time scales that can lead to a pure light-induced molecular-rotation control.
PACS: 78.67.-n – Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures / 33.80.-b – Photon interactions with molecules / 78.40.Me – Organic compounds and polymers
© EPLA, 2008
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