title: Enhanced sensitivity of electron-nuclear double resonance (ENDOR) by cross polarisation and relaxation.
abstract: Electron-nuclear double resonance (ENDOR) is a method of choice to detect magnetic nuclei in the coordination sphere of paramagnetic molecules, but its sensitivity substantially suffers from saturation effects. Recently we introduced a new pulsed ENDOR experiment based on electron-nuclear cross polarisation (CP) transfer. Here we analyse the time evolution of the spin polarization in CP-ENDOR and show that CP combined with inherent fast relaxation leads to enhanced sensitivity as compared to Davies ENDOR.
authors.affiliation: Research Group EPR Spectroscopy, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany. mbennat@gwdg.de.
authors.forename: Roberto
authors.initials: R
authors.lastname: Rizzato
authors.forename: Marina
authors.initials: M
authors.lastname: Bennati
mesh_terms: D000465:Algorithms; D000498:Allyl Compounds / Q000737:chemistry; D004578:Electron Spin Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods*; D004583:Electrons; D004867:Equipment Design
chemical_list: D000498:Allyl Compounds; C416323:bis-diphenylene-phenyl-allyl