Evaluation of Surface-initiated Polymer brush as Anti-scaling Coating for Plate Heat Exchangers

Jakob Ege Friis, Guruprakash Subbiahdoss, Gorm Gerved, Allan Hjarbæk Holm, Olga Santos, Anders Bank Blichfeld, Saeed Zajforoushan Moghaddam, Esben Thormann, Kim Daasbjerg, Joseph Iruthayaraj, Rikke Louise Meyer https://doi.org/10.1016/j.porgcoat.2019.06.042 Inorganic fouling is one of the challenging problems in heat exchanger applications. One approach to mitigate fouling is to employ surface coatings. In this study, we evaluated…

Two-phase bipolar electrografting

Monica Rohde Madsen, Line Koefoed, Henrik Jensen, Kim Daasbjerg, Steen U Pedersen https://doi.org/10.1016/j.electacta.2019.04.186 Bipolar electrochemistry is a wireless technique by which surface modifications at the extremities of a conducting object can be accomplished. In this study a new methodology for doing simultaneous electrografting of two different organic films at each end of a gold substrate…

Access to β‐Ketonitriles through Nickel‐Catalyzed Carbonylative Coupling of α‐Bromonitriles with Alkylzinc Reagents

Aske S Donslund, Karoline T Neumann, Nicklas P Corneliussen, Ebbe K Grove, Domenique Herbstritt, Kim Daasbjerg, Troels Skrydstrup https://doi.org/10.1002/chem.201902206 Herein, we report a nickel‐catalyzed carbonylative coupling of α‐bromonitriles and alkylzinc reagents with near stoichiometric carbon monoxide to give β‐ketonitriles in good yields. The reaction is catalyzed by a readily available and stable nickel(II) pincer complex.…

Carbon isotope labeling strategy for β-amino acid derivatives via carbonylation of azanickellacycles

Anne K Ravn, Maria BT Vilstrup, Peter Noerby, Dennis U Nielsen, Kim Daasbjerg, Troels Skrydstrup https://doi.org/10.1021/jacs.9b05934 A series of 4-membered azametallacycles have been prepared by the oxidative addition of Ni(0) with aziridines. Stoichiometric 13C-labeled carbon monoxide could be efficiently incorporated via Ni–C bond insertion to generate air stable and isolable cyclic Ni-acyl complexes. Upon subjection to…

Hydrosilane-Modified Poly (2-Hydroxyethyl Methacrylate) Brush as a Nanoadhesive for Efficient Silicone Bonding

Stefan Urth Nielsen, Mark Holm Olsen, Mikkel Skorkjær Kongsfelt, Steen Uttrup Pedersen, Kim Daasbjerg https://doi.org/10.1021/acsomega.9b01282 Leaching of chemicals from adhesion promoters is, in particular, problematic for the food, water, pharmaceutical, and MedTech industries where any chemical contamination is unacceptable. A solution to this issue is to employ covalently attached nanoscale polymer brushes as adhesive layers…

Supported molecular catalysts for the heterogeneous CO2 electroreduction

Xin-Ming Hu, Steen U Pedersen, Kim Daasbjerg https://doi.org/10.1016/j.coelec.2019.05.006 The thorough understanding of homogeneous catalysis has triggered intense research activities on the immobilization of molecular catalysts for the heterogeneous CO2 electroreduction. Herein, we discuss recent advances in the heterogeneous field with focus on the intrinsic effect coming from the catalyst structure and the extrinsic effect exerted by…

Chemically and electrochemically catalysed conversion of CO2 to CO with follow-up utilization to value-added chemicals

Dennis U Nielsen, Xin-Ming Hu, Kim Daasbjerg, Troels Skrydstrup https://doi.org/10.1038/s41929-018-0051-3 Carbon dioxide is ubiquitous and a vital molecule for maintaining life on our planet. However, the ever-increasing emission of anthropogenic CO2 into our atmosphere has provoked dramatic climate changes. In principle, CO2 could represent an important one-carbon building block for the chemical industry, yet its high thermodynamic…

Robust tuning metal/carbon heterointerfaces via ketonic oxygen enables hydrogen evolution reaction outperforming Pt/C

Jiaying Yu, Yunshuo Yang, Runtao Jia, Kim Daasbjerg, Jun Wang, Mauro Carraro, Zhuo Xin, Yuxing Huang, Troels Skrydstrup https://doi.org/10.1016/j.apsusc.2020.147080 Large-scale synthesis of metal/carbon hybrids with tunable metal/carbon heterointerfaces is vital for practical application of such hybrids in electrocatalysis. Herein, we developed a facile route for large-scale crafting of ultrafine Ru nanoparticles (NPs) anchored on the…