ORGN 495 |
| The development of smart materials and surfaces based on molecular systems requires the incorporation of responsive components. In this regard thermo-, electro- and photo-chromic systems are of considerable interest.1 In this presentation, several relatively simple molecular systems,2 which show complex yet elegant chromic behaviour under a range of stimuli, will be discussed. In addition to systems which employ changes in bonding to achieve chromic behaviour,2,3 examples of chromic systems that employ changes in conformation rather than bond-breaking/making in producing chromic behaviour will be presented.4 The immobilisation of chromic systems on surfaces2 will be described and the effect of immobilisation on their redox and photochromic behaviour explored. (1) B. L. Feringa, Molecular Switches, Wiley-VCH, Weinheim, Germany, 2001; M. A. Ratner and J. Jortner, Molecular Electronics, Blackwell, Oxford, 1997; Y. Yokoyama, Chem. Rev., 2000, 100, 1717; B. L. Feringa, R. A. van Delden, N. Koumura and E. M. Geertsema, Chem. Rev. 2000, 100, 1789; J.-P. Sauvage (ed.), Molecular Machines and Motors. Struc. Bond. 2001, vol. 99; M. Irie, Chem. Rev., 2000, 100, 1683; F. M. Raymo and M. Tomasulo, Chem. Soc. Rev. 2005, 34, 327. (2) J. Areephong, W. R. Browne, N. Katsonis, B. L. Feringa, Chem. Commun. 2006, 3930-3932. (3) (a) W. R. Browne, J. J. D. de Jong, T. Kudernac, M. Walko, L. N. Lucas, K. Uchida, J. H. van Esch, B. L. Feringa, Chem. Eur. J. 2005, 11, 6414-6429. ibid, 6430-6441. (b) J. J. D. de Jong, W. R. Browne, M. Walko, L. N. Lucas, L. J. Barrett, J. J. McGarvey, J. H. van Esch, B. L. Feringa, Org. Biomol. Chem. 2006, 4, 2387-2392. (4) W. R. Browne, M. M. Pollard, B. de Lange, A. Meetsma, B. L. Feringa, J. Am. Chem. Soc. 2006, 126, 12412-12413 |
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Materials, Devices and Switches
1:00 PM-4:40 PM, Wednesday, April 9, 2008 Morial Convention Center -- La Nouvelle, Blrm. C, Oral
Division of Organic Chemistry |