Molecular devices and machines

Balzani, V. Credi, A. Venturi, M. (2003) Molecular Devices and Machines-A Journey into the Nano World, Wiley-VCH, Weinheim. 

M. Venturi, ChemPhysChem 2008, 9, 202-220. (m) V. Balzani, A. Credi, M. Venturi, Molecular Devices and Machines, 2nd edition, Wiley-VCH, Weinheim, 2008. 

In general terms, these results indicate that, as the structural complexity increases, the overall properties of the system cannot be easily rationalized solely on the basis of the type and sequence of the functional units incorporated in the molecular framework—that is, its primary structure. Higher level conformational effects, which are reminiscent of those related to the secondary and tertiary structures of biomolecules,4d have to be taken into consideration. The comprehension of these effects constitutes a stimulating scientific problem and a necessary step for the design of novel artificial molecular devices and machines. 

These descriptions, while helpful, are by their nature noncomprehensive and there are many exceptions if such definitions are taken too literally. The problem may be linked to the definition of organometallic chemistry as the chemistry of compounds with metal-to-carbon bonds . This immediately rules out Wilkinson s compound, RhCl(PPh3)3, for example, which is one of the most important industrial catalysts for organometallic transformations known in the field. Indeed, it is often the objectives and thought processes of the chemist undertaking the work, as much as the work itself, which determine its field. Work in modern supramolecular chemistry encompasses not just host-guest systems but also molecular devices and machines, molecular recognition, so called self-processes ... 

Balzani, V., Venturi, M., Credi, A. Molecular Devices and Machines. A Jorney into the Nanoworld, Wiley-VCH, Weinheim, 2003 b) Feringa, B.L. (ed.), Molecular Switches, Wiley-VCH, Weinheim, 2001 c) Raehm, L., Sauvage, J.-P. Molecular machines and motors based on transition metal-containing catenanes and rotaxanes, Struct. Bond. 99 (2001), 55-78. 

Venturi M, Credi A, Balzani V (2003) Molecular devices and machines - a journey into the nanoworld. Wiley, Weinheim... 

Balzani V, Venturi M, Credi A. Molecular Devices and Machines - A journey into nanoworld. Weinheim Wiley-VCH, 2003. 

Besides being important and useful, Chemistry has also a beautiful side that has inspired writers, poets, and sculptors. Chemistry is a wonderful book that continues to expand every day new ideas and new concepts are developed, previously unknown natural molecules are discovered, novel artificial molecules are synthesized, more complex supramolecular species are assembled, and more and more interesting molecular devices and machines are created. 

Balzani V, Credi A, Venturi M (2008) Molecular devices and machines - Concepts and perspectives for the nanoworld, 2nd edn. Wiley-VCH, Weinheim, pp 259-311... 

V. Balzani, M. Venturi, and A. Credi, Molecular Devices and Machines—A journey into the nanoworld, Wiley-VCH Verlag Gmbh Co, WeiSHEim, 2003. 

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