| AVS 55th International Symposium & Exhibition | |
| Electronic Materials and Processing | Wednesday Sessions |
| Session EM+NC-WeA |
| Session: | Molecular and Organic Electronics |
| Presenter: | I. Temprano, Université Laval, Canada |
| Correspondent: | Click to Email |
The ability to develop new methods to enhance electrical contact between organic molecules and electrodes is fundamental to the design of devices that require electron flow between an organic and a metallic component. Metal-organic contacts using double and triple bonds is a promising approach in that it combines three advantages. First it offers a transmission coeficient not yet seen way ahead of any other molecular linkages yet known,1,2 second they have enhanced thermal stability3,9-10 over 900 K, and they show activity for olefin-metathesis add-on chemistry.1 The dissociative adsorption of carbonyl compounds leads to the formation of C=Mo double bonds on the surface of molybdenum carbide.3-6 These metal alkylidenes are mimics of well defined homogeneous metathesis catalysts, and present similar activity face to transalkylidenation and ring-openining polymerization (ROMP)8 reaction. The data presented will show this breaktrhough catalytic system and its performance, paying especial attention to the formation and characterization of surface initiated metathesis polymerization of polyacetylene,9 the simplest of the conjugated polymers, and an ideal candidate to study the special properties this system can developpe. This study opens a whole new era in which a very controllable reaction as olefin-metathesis may be used to grow technologically very interesting conjugated polymers, directly from a metallic surface, and hence, to interconnect electrodes, as nanowires, in nanodevices with great control and precission. Self-assembly of conjugated polymers may allow their targeted insertion into electronic and electrooptical devices.
1 Tulevski, G.S., Myers, M.B., Hybertsen, M.S., Steigerwald, M.L., Nuckolls C., Science, 309 (2005) 591.
2 J. Ning, Z. Qian, R. Li, S. Hou, A. R. Rocha, S. Sanvito. J. Chem. Phys., 126 (2007), 174706
3 Zahidi, E-M., Oudghiri-Hassani, H., McBreen, P.H., Nature, 409 (2001), 1023
4 Siaj, M., Reed, C., Oyama, T., Scott, S.L., McBreen, P.H., J. Am. Chem. Soc, 126 (2004) 9514
5 Siaj, M., Oudghiri-Hassani, H., Zahidi, E-M., McBreen, P.H., Surf. Sci., 579 (2005) 1
6 Oudghiri-Hassani, H., Zahidi, E-M., Siaj, M., McBreen, P.H., App. Surf. Sci., 212-213 (2003) 4
7 Siaj, M., McBreen, P.H., Science, 309 (2005) 588.