The tip of a scanning tunneling microscope (STM) can be used to dehydrogenate freely-diffusing tetrathienoanthracene (TTA) molecules on Cu(111), trapping the molecules into metal-coordinated oligomeric structures. The process proceeds at bias voltages above ∼3 V and produces organometallic structures identical to those resulting from the thermally-activated cross-coupling of a halogenated analogue. The process appears to be substrate dependent: no oligomerization was observed on Ag(111) or HOPG. This approach demonstrates the possibility of controlled synthesis and nanoscale patterning of 2D oligomer structures on selected surfaces. © 2014 The Partner Organisations.
Tip-induced C-H activation and oligomerization of thienoanthracenes / Dinca, L. E.; Mac Leod, J. M.; Lipton Duffin, J.; Fu, C.; Ma, D.; Perepichka, D. F.; Rosei, F.. - In: CHEMICAL COMMUNICATIONS. - ISSN 1359-7345. - ELETTRONICO. - 50:63(2014), pp. 8791-8793. [10.1039/c4cc03719g]
Tip-induced C-H activation and oligomerization of thienoanthracenes
Rosei F.
2014-01-01
Abstract
The tip of a scanning tunneling microscope (STM) can be used to dehydrogenate freely-diffusing tetrathienoanthracene (TTA) molecules on Cu(111), trapping the molecules into metal-coordinated oligomeric structures. The process proceeds at bias voltages above ∼3 V and produces organometallic structures identical to those resulting from the thermally-activated cross-coupling of a halogenated analogue. The process appears to be substrate dependent: no oligomerization was observed on Ag(111) or HOPG. This approach demonstrates the possibility of controlled synthesis and nanoscale patterning of 2D oligomer structures on selected surfaces. © 2014 The Partner Organisations.Pubblicazioni consigliate
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