Exploitation of desilylation chemistry in tailor-made functionalization on diverse surfaces

Yongchun Fu, Songjie Chen, Akiyoshi Kuzume, Alexander Rudnev, Cancan Huang, Veerabhadrarao Kaliginedi, Masoud Baghernejad, Wenjing Hong (), Thomas Wandlowski, Silvio Decurtins and Shi-Xia Liu ()
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Yongchun Fu: University of Bern
Songjie Chen: University of Bern
Akiyoshi Kuzume: University of Bern
Alexander Rudnev: University of Bern
Cancan Huang: University of Bern
Veerabhadrarao Kaliginedi: University of Bern
Masoud Baghernejad: University of Bern
Wenjing Hong: University of Bern
Thomas Wandlowski: University of Bern
Silvio Decurtins: University of Bern
Shi-Xia Liu: University of Bern

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract Interface engineering to attain a uniform and compact self-assembled monolayer at atomically flat surfaces plays a crucial role in the bottom-up fabrication of organic molecular devices. Here we report a promising and operationally simple approach for modification/functionalization not only at ultraflat single-crystal metal surfaces, M(111) (M=Au, Pt, Pd, Rh and Ir) but also at the highly oriented pyrolytic graphite surface, upon efficient in situ cleavage of trimethylsilyl end groups of the molecules. The obtained self-assembled monolayers are ultrastable within a wide potential window. The carbon–surface bonding on various substrates is confirmed by shell-isolated nanoparticle-enhanced Raman spectroscopy. Application of this strategy in tuning surface wettability is also demonstrated. The most valuable finding is that a combination of the desilylation with the click chemistry represents an efficient method for covalent and tailor-made functionalization of diverse surfaces.

Date: 2015
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DOI: 10.1038/ncomms7403

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