Iron(II) Spin‐Crossover Complexes in Ultrathin Films: Electronic Structure and Spin‐State Switching by Visible and Vacuum‐UV Light1. Issue 11 (12th February 2014)

• Record Type: Journal Article
• Authors: Ludwig, E.; Naggert, H.; Kalläne, M.; Rohlf, S.; Kröger, E.; Bannwarth, A.; Quer, A.; Rossnagel, K.; Kipp, L.; Tuczek, F.
• Is Part Of: Angewandte Chemie international edition. Volume 53:Issue 11(2014)
• Page Start: 3019
• Page End: 3023
• Publication Date: 2014-02-12
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201307968
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The electronic structure of the iron(II) spin crossover complex [Fe(H₂bpz)₂(phen)] deposited as an ultrathin film on Au(111) is determined by means of UV‐photoelectron spectroscopy (UPS) in the high‐spin and in the low‐spin state. This also allows monitoring the thermal as well as photoinduced spin transition in this system. Moreover, the complex is excited to the metastable high‐spin state by irradiation with vacuum‐UV light. Relaxation rates after photoexcitation are determined as a function of temperature. They exhibit a transition from thermally activated to tunneling behavior and are two orders of magnitude higher than in the bulk material.</p> </abstract>