Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator

Kittelmann M, Nimmrich M, Lindner R, Gourdon A, Kühnle A (2013)
ACS Nano 7(6): 5614-5620.

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The bottom-up construction of functional devices from molecular building blocks offers great potential in tailoring materials properties and functionality with utmost control. An important step toward exploiting bottom-up construction for real-life applications is the creation of covalently bonded structures that provide sufficient stability as well as superior charge transport properties over reversibly linked self-assembled structures. On-surface synthesis has emerged as a promising strategy for fabricating stable, covalently bound molecular structure on surfaces. So far, a majority of the structures created by this method have been obtained from a rather simple one-step processing approach. But the on-surface preparation of complex structures will require the possibility to carry out various reaction steps in a sequential manner as done In solution chemistry. Only one example exists in literature in which a hierarchical strategy is followed to enhance structural complexity and reliability on a metallic surface. Future molecular electronic application will, however, require transferring these strategies to nonconducting surfaces. Bulk insulating substrates are known to pose significant challenges to on-surface synthesis due to the absence of a metal catalyst and their low surface energy, frequently resulting In molecule desorption rather than reaction activation. By carefully selecting a suitable precursor molecule, we succeeded in performing a two-step linking reaction on a bulk Insulating surface. Besides a firm anchoring toward the substrate surface, the reaction sites and sequential order are encoded In the molecular structure, providing so far unmatched reaction control in on-surface synthesis on a bulk insulating substrate.
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Kittelmann M, Nimmrich M, Lindner R, Gourdon A, Kühnle A. Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator. ACS Nano. 2013;7(6):5614-5620.
Kittelmann, M., Nimmrich, M., Lindner, R., Gourdon, A., & Kühnle, A. (2013). Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator. ACS Nano, 7(6), 5614-5620. doi:10.1021/nn402018w
Kittelmann, M., Nimmrich, M., Lindner, R., Gourdon, A., and Kühnle, A. (2013). Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator. ACS Nano 7, 5614-5620.
Kittelmann, M., et al., 2013. Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator. ACS Nano, 7(6), p 5614-5620.
M. Kittelmann, et al., “Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator”, ACS Nano, vol. 7, 2013, pp. 5614-5620.
Kittelmann, M., Nimmrich, M., Lindner, R., Gourdon, A., Kühnle, A.: Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator. ACS Nano. 7, 5614-5620 (2013).
Kittelmann, Markus, Nimmrich, Markus, Lindner, Robert, Gourdon, Andre, and Kühnle, Angelika. “Sequential and Site-Specific On-Surface Synthesis on a Bulk Insulator”. ACS Nano 7.6 (2013): 5614-5620.
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