Monica R. Madsen, Magnus H. Rønne, Marvin Heuschen, Dusanka Golo, Mårten S. G. Ahlquist, Troels Skrydstrup, Steen U. Pedersen, and Kim Daasbjerg. https://doi.org/10.1002/anie.202107550 A nitrogen-stabilized single-atom catalyst containing low-valence zinc atoms (Znδ+-NC) is reported. It contains saturated four-coordinate (Zn-N4) and unsaturated three-coordinate (Zn-N3) sites. The latter makes Zn a low-valence state, as deduced from X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, electron…

Magnus Hansen-Felby,   Andreas Sommerfeldt,   Martin Lahn Henriksen,    Steen Uttrup Pedersen,  and  Kim Daasbjerg. https://doi.org/10.1039/D1PY01412A Self-immolative polymers (SIPs) are a class of degradable stimuli-responsive polymers, which, upon removal of labile end-caps, depolymerize selectively and stepwise to small molecules. In light of our recent discovery of poly(dithiothreitol) (pDTT), a versatile SIP with a remarkably simple synthesis procedure, we…

Monica R. Madsen, Magnus H. Rønne, Marvin Heuschen, Dusanka Golo, Mårten S. G. Ahlquist, Troels Skrydstrup, Steen U. Pedersen, and Kim Daasbjerg. https://pubs.acs.org/doi/10.1021/jacs.1c10805 Urgent solutions are needed to efficiently convert the greenhouse gas CO2 into higher‑value products. In this work, fac-Mn(bpy)(CO)3Br (bpy = 2,2′-bipyridine) is employed as electrocatalyst in reductive CO2 conversion. It is shown that product selectivity can be shifted…

Asger Holm Agergaard, Andreas Sommerfeldt, Steen Uttrup Pedersen, Henrik Birkedal, Kim Daasbjerg https://doi.org/10.1002/anie.202108698 Functional materials engineered to degrade upon triggering are in high demand due their potentially lower impact on the environment as well as their use in sensing and in medical applications. Here, stimuli‑responsive polymers are prepared by decorating a self-immolative poly(dithiothreitol) backbone with pendant catechol units. The…

Dr. Magnus H. Rønne, Monica R. Madsen, Prof. Dr. Troels Skrydstrup, Assoc. Prof. Dr. Steen U. Pedersen,Prof. Dr. Kim Daasbjerg https://doi.org/10.1002/celc.202100279 Development of new catalytic approaches for reduction of small molecules is an aspiring technology to alleviate increasing energy demands without use of fossil fuels. One of the most promising molecular catalysts for reduction of CO2 is fac-Mn(bpy)(CO)3Br (bpy=2,2’-bipyridine). In this work, the mechanism…

Matteo Miola, Simin Li, Xin-Ming Hu, Marcel Ceccato, Annette-E. Surkus, Edmund Welter, Steen U. Pedersen, Henrik Junge, Troels Skrydstrup, Matthias Beller, Kim Daasbjerg https://doi.org/10.1002/admi.202100067 Electrochemical CO2 reduction to valuable chemicals represents a green and sustainable approach to close the anthropogenic carbon cycle, but has been impeded by low efficiency and high cost of electrocatalysts. Here, a cost-effective hybrid catalyst consisting of hemin (chloroprotoporphyrin IX iron(III)), a…

Adel-Mehraban, F., Raeissi, K., Karimzadeh, F., Pedersen, S. U., Salehzadeh, H. & Daasbjerg, K. https://doi.org/10.1016/j.porgcoat.2021.106185 This paper proposes a novel approach for attaching a graphene oxide (GO) film to a Cu substrate using diazonium chemistry. For this purpose, Cu was covalently modified using electrochemical grafting of p-phenylenebis(diazonium) salt (p-PBDS) followed by immersion in a basic GO suspension.…

Jakobsen, J. B., Rønne, M. H., Daasbjerg, K. & Skrydstrup, T. https://doi.org/10.1002/anie.202014255 The selective and efficient reduction of carbon dioxide represents a key solution to producing non-fossil-fuel-based feedstocks for the chemical industry, while alleviating the increasing atmospheric concentration of this greenhouse gas. A variety of catalytic methods for the CO2 reduction reaction (CO2RR) have been developed, including…

Costentin, C., Daasbjerg, K. & Robert, M. The development of supported molecular catalysts deposited at conductive electrodes has recently (re)opened a wide range of new possibilities to investigate CO2 reduction with the catalytic selectivity traditionally offered by molecules, and the increased stability usually encountered with heterogeneous materials. The various methods for immobilizing molecules (non-covalent, covalent, periodic systems)…