Spin chemistry

Construction of Nanostructures by use of Magnetic Fields and Spin Chemistry in Solid/Liquid Interfaces... 

Asa study of spin chemistry at solid/liquid interfaces, we have examined M F Es on the photoelectrochemical reactions of photosensitive electrodes modified with nanoclusters containing CgoN and MePH (Figure 15.4), intended for utilization of C o as photofunctional nanodevices. 

Tanimoto, Y. (1998) Dynamic Spin Chemistry (eds S. Nagakura H. Hayashi and T. Azumi), Kodansha-Wdey, Tokyo/ New York Chapter 3. 

The reaction of ion-molecular charge transfer plays an important role in spin chemistry and ESR spectroscopy. Their chemical dynamics are often studied by... 

Earlier suggestions of the involvement of free radical intermediates have stimulated the application of spin chemistry methods to the investigation of the detailed mechanism of the photolysis of a-germyl ketones in either polar or nonpolar solvents, in the presence or in the absence of traps of element-centered free radicals. Of special interest are problems of the multiplicity of the reactive state, and the transformations of the element-centered free radicals in the bulk. 

At the same time, spin chemistry techniques are capable of providing reliable information on the nature of the generated intermediates and their consequent transformations13. 

From this perspective, the combination of spin chemistry techniques and laser pulse photolysis should allow one to obtain the most valuable information on the formation and decay reactions of such active short-lived derivatives as alkyl-substituted germylenes and digermenes, as well as on germanium-centered free radicals67,68. 

The achievements of mechanistic studies employing spin chemistry methods convincingly demonstrate the potential of these techniques in revealing the detailed reaction mechanisms of a number of homolytic processes involving organic Ge, Sn and Pb compounds. The role of short-lived paramagnetic (and sometimes diamagnetic) intermediates, such as free... 

VanderHart, D.L., Asano, A., and Gilman, J.W. 2001. Solid-state NMR investigation of paramagnetic nylon-6 clay nanocomposites. 1. Crystallinity, morphology, and the direct influence of Fe3+ on nuclear spins. Chemistry of Materials 13(10) 3781-3795. 

Another burst of activity in free radical research occurred in the 1960s and 1970s, after several reports of anomalous intensities in the EPR spectra of photochemically or radiolytically produced radicals, and in the NMR spectra of the products from free radical reactions in solution." " These so-called chemically induced magnetic spin polarization (CIDNP and CIDEP) phenomena provided a wealth of mechanistic, kinetic, dynamic, and structural information and were a cornerstone of carbon-centered free radical research for the better part of three decades. The umbrella term for this area of research is spin chemistry, which is defined as the chemistry of spin-selective processes. 

Nagakura, S. Hayashi, H. Azumi, T. Dynamic Spin Chemistry Magnetic Controls and Spin Dynamics of Chemical Reactions-, KodanshaAViley Tokyo/New York, 1998. 

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