Use of Additional Fast-Relaxing Paramagnetic Species for Improvement of RIDME Performance

作者：Zaripov R B^*; Dzhabarov V I; Knyazev A A; Galyametdinov Yu G; Kulik L V

来源：Applied Magnetic Resonance, 2011, 40(1): 11-19.

DOI：10.1007/s00723-010-0170-8

A method of improving relaxation-induced dipolar modulation enhancement (RIDME) performance by an artificial increase of electron spin-lattice relaxation rate is introduced and tested on a model nitroxide biradical. A substantial increase of its electron spin-lattice relaxation rate is achieved by the addition of a fast-relaxing paramagnetic holmium complex to the sample solution. The electron spin-spin relaxation rate of the nitroxide does not change dramatically upon this addition. The suggested method allows obtaining a deep dipolar modulation in the RIDME experiment, which is free from distortions caused by spectral diffusion processes.

• 出版日期2011-2