Macromolecular materials spin probes

SITE-SPECIFIC INFORMATION ON MACROMOLECULAR MATERIALS BY COMBINING CW AND PULSED ESR ON SPIN PROBES... 

This chapter describes the basic concepts used when applying such a combination of ESR techniques to spin labels and probes in complex macromolecular materials. Illustrative examples are taken from our own work. The chapter is organized as follows Section 2 discusses which systems should be studied with covalently bound labels and which systems with spin probes. Also considered are the choice of the tether that connects the spin label to the macromolecule and the optimum choice of... 

Electron spin resonance spectroscopy on spin probes and labels can provide a wealth of information on macromolecular materials. Liquid solutions, soft matter, and glassy systans are accessible to this approach. The particular strength of such methods is their ability to selectively address sites of interest in complex materials. To distinguish between properties of the probe and of the investigated material and thus to avoid overinterpretation of the results, it is necessary to understand in some detail which processes influence probe or label dynamics, and which driving forces are... 

Gunnar Jeschke, MPI for Polymer Research, Mainz, Germany, Continuous-Wave and Pulsed ESR Methods (Chapter 1), Double Resonance ESR Methods (Chapter 2), Site-Specific Information on Macromolecular Materials by Combining CW and Pulsed ESR on Spin Probes (Chapter 7). 

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