Dresden 2003 – wissenschaftliches Programm
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SYMM: Bio- and macromolecules at work - from motor proteins to soft actuators
SYMM 1: Symposium Bio- and macromolecules at work - from motor proteins to soft actuators
SYMM 1.2: Hauptvortrag
Mittwoch, 26. März 2003, 15:00–15:30, ZEU/160
Synthetic Molecular Motors — •Ben L. Feringa — University of Groningen, Stratingh Institute, Dept.of Organic and Molecular Inorganic Chemistry, Nijenborgh 4, 9747 AG Groningen, The Netherlands, E-mail: feringa@chem.rug.nl
The fascinating structures and complex functions present in biological systems, particular evident from the process of vision and the rotary motion in the ATP-ase system, offer a great challenge for the design of functional molecular components. Chirality plays a prominent role in such endeavour as control of molecular and supramolecular chirality allows the tuning of numerous properties and functions. The design, synthesis, thermal and photochemical processes of a number of chiral systems, which form the basis for molecular switches and motors, will be discussed.
Unidirectional rotation under the influx of energy is a key factor in a molecular rotary motor. The design and functioning of molecular -light-driven - motors, is outlined. In these system for the first time energy consumption is coupled to repetitive unidirectional rotation in an artificial molecular motor system. The first and second generation molecular motors and the essential role of chirality is discussed. Progress in the control of rotary speed is described. Furthermore recent advances in the construction of surface assembled motors, the synthesis of a visible light driven rotary molecular motor and coupled rotary motions in attempts to construct a primitive molecular gearbox are outlined. The use of molecular motors in liquid crystalline materials to control macroscopic properties is also discussed. These systems function as motors at the molecular level and offer prospects for the construction of nanoscale molecular machinery.
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- B.L. Feringa, R.A. van Delden, M.K.J. ter Wiel, "Chiroptical Switches" in Molecular Switches, B.L. Feringa, ed. Wiley-VCH Weinheim, 2001, chapter 5.
- B.L. Feringa, Acc. Chem. Res. 2001,34. N. Koumura, E.M. Geertsema, M.B. van Gelder, A. Meetsma, B.L. Feringa, J. Am. Chem. Soc. 2002,124,5037.