Ammonia Coordination Introducing a Magnetic Moment in an On-Surface Low-Spin Porphyrin (pages 4568–4571)
Christian Wäckerlin, Dr. Kartick Tarafder, Jan Girovsky, Jan Nowakowski, Tatjana Hählen, Aneliia Shchyrba, Dr. Dorota Siewert, Dr. Armin Kleibert, Prof. Frithjof Nolting, Prof. Peter M. Oppeneer, Prof. Thomas A. Jung and Prof. Nirmalya Ballav
Version of Record online: 19 MAR 2013 | DOI: 10.1002/anie.201208028
Amazing ammonia: The molecular spin state of NiII porphyrin, supported on a ferromagnetic Co surface, can be reversibly switched between spin-off (S=0) and spin-on (S=1) states upon coordination and decoordination of the gaseous ligand NH3, respectively (see picture). This finding clearly indicates the possible use of the system as a single-molecule-based magnetochemical sensor and in spintronics.