Spin-probe studies

Chasteen, N.D. and Theil, E.C. 1982. Iron binding by horse spleen apoferritin a vanadyl(IV) EPR spin probe study. Journal of Biological Chemistry 257 7672-7677. 

Wright, P.B., Lamb, E., Dorsey, J.G, and Kooser, R.G., Microscopic order as a function of surface coverage in alkyl-modified silicas—spin probe studies. Anal. Chem., 64, 785, 1992. 

McBride, M. B. (1982b). Organic anion adsorption on aluminum hydroxides Spin probe studies. Clays Clay Miner. 30,438-444. 

Recent advances in the development of non-invasive, in situ spectroscopic scanned-probe and microscopy techniques have been applied successfully to study mineral particles in aqueous suspension (Hawthorne, 1988 Hochella and White, 1990). In situ spectroscopic methods often utilise molecular probes that have diagnostic properties sensitive to changes in short-range molecular environments. At the particle-solution interface, the molecular environment around a probe species is perturbed, and the diagnostic properties of the probe, which can be either optical or magnetic, then report back on surface molecular structure. Examples of in situ probe approaches that have been used fruitfully include electron spin resonance (ESR) and nuclear magnetic resonance (NMR) spin-probe studies perturbed vibrational probe (Raman and Fourier-transform IR) studies and X-ray absorption (Hawthorne, 1988 Hochella and White, 1990 Charletand Manceau, 1993 Johnston et al., 1993). 

EPR SPIN PROBE STUDY OF CARBON NANOPARTICLES HYDRATION PROPERTIES IN AQUEOUS DISPERSIONS... 

Wiggins, P.M., Van Ryn, R.T., Bowmaker, G.A. (1987) A spin-probe study of the water associated with a steady-state level of phosphoenzyme of the Ca-ATPase. Bioelectrochem. Bioenerg. 17, 457-471. 

Hindered nitroxides are a class of free radicals that are unusually long-lived. The presence of methyl groups y to the radical center decreases the rate of self reaction to such an extent that the radical becomes kinetically stable. Hindered nitroxides can be obtained as crystalline solids or pure liquids, which in the absence of other materials are very stable. These materials have found extensive use as spin labels and spin probes. Indeed, almost all spin-label studies have employed nitroxides spin-probe studies have used either nitroxides or paramagnetic metal ions. 

Analysis of ESR parameters for bound to transferrin suggests that the inplane donor atoms are comprised of a water ligand, two (or three) phenolate groups from tyrosine and a carboxylate [250]. A spin probe study of apoferritin... 

M. Peric, M. Alves, B. L. Bales, Precision parameters from spin-probe studies of membranes using a partitioning technique. Application to two model membrane vesicles, Biochim. Biophys. Acta-Biomembr., 2005, 1669, 116—124. 

Windle, J.J., An ESR spin probe study of potato starch gelati-nization, Starch, 37(4) 121, 1985. 

Nonaka, K-L, Kazama, S., Goto, A. et al. (2002) Spin probe study on the interaction of chitosan-derived polymer surfactants with Upid membrane. Journal of Colloid and Interface Science, 246,288-295. 

Nishimura, J., Kobayashi, T., Komori, Y, and Tateyama, N. 1995. In 24th ICRC, Roma, Italy, Vol. 3, p. 29. Nonaka, K.-L, Kazama, S., Goto, A., Fukuda, H., Yoshioka, H., and Yoshioka, H. 2002. Spin probe study on the interaction of chitosan-derived polymer surfactants with lipid membrane. J. Colloid Interface Sci. 246 288-295. 

Asymmetric line broadening is commonly observed for aminoxyl radicals, which are therefore used in a wide variety of spin label and spin probe studies (see Section 18.6.5.2). 

Fig. 9.1. Typical triplet spectra of nitroxide radicals in most of spin-label or spin-probe studies (upper) A, rigid state B, rapid motion.

Buitink, J., Hemminga, M.A., and Hoekstra, F. A., Characterization of molecular mobflity in seed tissues an electron paramagnetic spin probe study, Biophys. J., 76,3315,1999. 

In this section the potential of EPR techniques as applied to binary polymer blends will be illustrated by examples of selected reports concerning the three issues on three issues (i) spin probe studies (ii) radicals generated by ionizing radiation and (iii) paramagnetic species in conductive materials. All of the experiments described in the following subsections were performed using X-band EPR. 

Kumler, P. L., S. E. Keinath, and R. F Boyer, ESR Studies of Polymer Transitions III. Effect of Molecular Weight Distribution on Tg Values of Polystyrene as Determined by ESR Spin-Probe Studies, J. Macromol. Sci. Phys., 13, 631-646, 1977. 

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