The Role of Metal Adatoms in a Surface-Assisted Cyclodehydrogenation Reaction on a Gold Surface

Björk, Jonas,1983-Linköpings universitet,Materialdesign,Tekniska fakulteten (författare)

Funding Agencies|Alexander von Humboldt foundation; Swedish Research Council; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [200900971]; MCIN/AEI [PID2020-113142RB-C21, IJCI-2014-19291]; ERDF A way of making Europe [MAT2017-85089-C2-1-R]; ESF Investing in your future [RYC2018-024364-I]; Swiss National Science Foundation [200020_182015, 51NF40-205602]; Knut and Alice Wallenberg (KAW) Foundation; Max Planck Society
Dehydrogenation reactions are key steps in many metal-catalyzed chemical processes and in the on-surface synthesis of atomically precise nanomaterials. The principal role of the metal substrate in these reactions is undisputed, but the role of metal adatoms remains, to a large extent, unanswered, particularly on gold substrates. Here, we discuss their importance by studying the surface-assisted cyclodehydrogenation on Au(111) as an ideal model case. We choose a polymer theoretically predicted to give one of two cyclization products depending on the presence or absence of gold adatoms. Scanning probe microscopy experiments observe only the product associated with adatoms. We challenge the prevalent understanding of surface-assisted cyclodehydrogenation, unveiling the catalytic role of adatoms and their effect on regioselectivity. The study adds new perspectives to the understanding of metal catalysis and the design of on-surface synthesis protocols for novel carbon nanomaterials.

NATURVETENSKAP Kemi Organisk kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Organic Chemistry hsv//eng
Cyclodehydrogenation; Density Functional Theory; Reaction Mechanisms; Scanning Probe Microscopy; On-Surface Synthesis

Sanchez-Sanchez, CarlosSwiss Fed Labs Mat Sci & Technol, Switzerland; Inst Mat Sci Madrid ICMM CSIC, Spain (författare)
Chen, QiangMax Planck Inst Polymer Res, Germany; Univ Oxford, England (författare)
Pignedoli, Carlo A.Swiss Fed Labs Mat Sci & Technol, Switzerland (författare)
Rosén, Johanna,1975-Linköpings universitet,Materialdesign,Tekniska fakulteten(Swepub:liu)johro07 (författare)
Ruffieux, PascalSwiss Fed Labs Mat Sci & Technol, Switzerland (författare)
Feng, XinliangTech Univ Dresden, Germany; Tech Univ Dresden, Germany (författare)
Narita, AkimitsuMax Planck Inst Polymer Res, Germany; Okinawa Inst Sci & Technol Grad Univ, Japan (författare)
Mullen, KlausMax Planck Inst Polymer Res, Germany (författare)
Fasel, RomanSwiss Fed Labs Mat Sci & Technol, Switzerland; Univ Bern, Switzerland (författare)
Linköpings universitetMaterialdesign (creator_code:org_t)

Ingår i:Angewandte Chemie International Edition: Wiley-V C H Verlag GMBH61:491433-78511521-3773

Av författaren/redakt...: Björk, Jonas, 19 ...; Sanchez-Sanchez, ...; Chen, Qiang; Pignedoli, Carlo ...; Rosén, Johanna, ...; Ruffieux, Pascal; visa fler...; Feng, Xinliang; Narita, Akimitsu; Mullen, Klaus; Fasel, Roman; visa färre...

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