Details

Autor(en) / Beteiligte

• Chen, Qiwei
• Cramer, Jacob R.
• Liu, Jing
• Jin, Xin
• Liao, Peilin
• Shao, Xiang
• Gothelf, Kurt V.
• Wu, Kai

Titel

Steering On‐Surface Reactions by a Self‐Assembly Approach

Ist Teil von

• Angewandte Chemie (International ed.), 2017-04, Vol.56 (18), p.5026-5030

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 4,4′‐Bis(2,6‐difluoropyridin‐4‐yl)‐1,1′:4′,1′′‐terphenyl (BDFPTP) molecules underwent dehydrocyclization and covalent coupling reactions on Au(111) according to scanning tunneling microscopy (STM) measurements and density functional theory (DFT) calculations. Self‐assembly of the reactants in well‐defined molecular domains prior to reaction could greatly enhance the regioselectivity of the dehydrocyclization reaction and suppress defluorinated coupling, demonstrating that self‐assembly can efficiently steer on‐surface reactions. Such a strategy could be of great importance in surface chemistry and widely applied to control on‐surface reactions. Surface‐enhanced selectivity: Randomly distributed 4,4′‐bis(2,6‐difluoropyridin‐4‐yl)‐1,1′:4′,1′′‐terphenyl (BDFPTP) undergoes both dehydrocyclization (DHC) and coupling reactions on Au(111). However, the DHC regioselectivity is greatly enhanced and the coupling reaction is completely suppressed when BDFPTP self‐assembles on the surface prior to its reactions.