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Título

Direct imaging of covalent bond structure in single-molecule chemical reactions

Autor Oteyza, D. G. de ; Chen, Yen-Chia; Gorman, Patrick; Mowbray, Duncan J. ; Pedramrazi, Zahra; Rubio, Angel; Fischer, Felix R.; Crommie, Michael F.
Fecha de publicación 2013
EditorAmerican Association for the Advancement of Science
Citación Science 340(6139): 1434-1437 (2013)
ResumenObserving the intricate chemical transformation of an individual molecule as it undergoes a complex reaction is a long-standing challenge in molecular imaging. Advances in scanning probe microscopy now provide the tools to visualize not only the frontier orbitals of chemical reaction partners and products, but their internal covalent bond configurations as well. We used noncontact atomic force microscopy to investigate reaction-induced changes in the detailed internal bond structure of individual oligo-(phenylene-1,2- ethynylenes) on a (100) oriented silver surface as they underwent a series of cyclization processes. Our images reveal the complex surface reaction mechanisms underlying thermally induced cyclization cascades of enediynes. Calculations using ab initio density functional theory provide additional support for the proposed reaction pathways.
URI http://hdl.handle.net/10261/94550
DOI10.1126/science.1238187
Identificadoresdoi: 10.1126/science.1238187
issn: 0036-8075
e-issn: 1095-9203
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