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.

Calle, C., Sreekanth, A., Fedin, M.V., Forrer, J., Garcia-Rubio, I., Gromov, I.A., et al. (2006). Pulse EPR methods for studying chemical and biological samples containing transition metals. HELVETICA CHIMICA ACTA, 89(10), 2495-2521 [10.1002/hlca.200690229].

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

SANTANGELO, Maria Grazia;
2006-01-01

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.
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
Calle, C., Sreekanth, A., Fedin, M.V., Forrer, J., Garcia-Rubio, I., Gromov, I.A., et al. (2006). Pulse EPR methods for studying chemical and biological samples containing transition metals. HELVETICA CHIMICA ACTA, 89(10), 2495-2521 [10.1002/hlca.200690229].
File in questo prodotto:
File Dimensione Formato  
Calle_et_al-2006-Helvetica_Chimica_Acta.pdf

Solo gestori archvio

Dimensione 672.99 kB
Formato Adobe PDF
672.99 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/52843
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 33
  • ???jsp.display-item.citation.isi??? 33
social impact