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An artificial molecular switch that mimics the visual pigment and completes its photocycle in picoseconds (2008) |
- Sinicropi, Adalgisa,
- Martin, Elena,
- Ryazantsev, Mikhail,
- Helbing, Jan,
- Briand, Julien,
- Sharma, Divya,
- Leonard, Jeremie,
- Haacke, Stefan,
- Cannizzo, Andrea,
- Chergui, Majed,
- Zanirato, Vinicio,
- Fusi, Stefania,
- Santoro, Fabrizio,
- Basosi, Riccardo,
- Ferre, Nicolas,
- Olivucci, Massimo
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Abstract |
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Single mols. that act as light-energy transducers (e.g., converting the energy of a photon into at.-level mech. motion) are examples of minimal mol. devices. Here, we focus on a mol. switch designed by merging a conformationally locked diarylidene skeleton with a retinal-like Schiff base and capable of mimicking, in soln., different aspects of the transduction of the visual pigment Rhodopsin. Complementary ab initio multiconfigurational quantum chem.-based computations and time-resolved spectroscopy are used to follow the light-induced isomerization of the switch in methanol. The results show that, similar to rhodopsin, the isomerization occurs on a 0.3-ps time scale and is followed by |
Details der Publikation |
| Download |
http://infoscience.epfl.ch/record/134959 |
| Archiv |
Infoscience | Ecole Polytechnique Federale de Lausanne (Switzerland) |
| Keywords |
Molecular modeling; Molecular switches; Simulation and Modeling (artificial mol. switch mimics visual pigment and completes photocycle in picoseconds); Isomerization (photoisomerization; artificial mol. switch mimics visual pigment and completes photocycle in picoseconds); Pigments (visual; artificial mol. switch mimics visual pigment and completes photocycle in picoseconds),
mol switch vision pigment photocycle isomerization
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Text
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| Sprache |
Englisch
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