Pulse EPR methods for studying chemical and biological samples containing transition metals

Maria Grazia Santangelo, Patrick Léger, Bruno Mancosu, Anandaram Sreekanth, Inès Garcia-Rubio, Arthur Schweiger, René Tschaggelar, Besnik Kasumaj, Dariush Hinderberger, George Mitrikas, Matvey V. Fedin, Igor A. Gromov, Jeffrey Harmer, Jörg Forrer, Maria Grazia Santangelo, Carlos Calle, Stefan Stoll

Risultato della ricerca: Articlepeer review

30 Citazioni (Scopus)

Abstract

This review discusses the application of pulse EPR to the characterization of disordered systems, with an emphasis on samples containing transition metals. Electron nuclear double-resonance (ENDOR), electron-spin-echo envelope-modulation (ESEEM), and double electron-electron resonance (DEER) methodologies are outlined. The theory of field modulation is outlined, and its application is illustrated with DEER experiments. The simulation of powder spectra in EPR is discussed, and strategies for optimization are given. The implementation of this armory of techniques is demonstrated on a rich variety of chemical systems: several porphyrin derivatives that are found in proteins and used as model systems, otherwise highly reactive aminyl radicals stabilized with electron-rich transition metals, and nitroxide-copper-nitroxide clusters. These examples show that multi-frequency continuous-wave (CW) and pulse EPR provides detailed information about disordered systems.
Lingua originaleEnglish
pagine (da-a)2495-2521
Numero di pagine26
RivistaHelvetica Chimica Acta
Volume89
Stato di pubblicazionePublished - 2006

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Biochemistry
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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