Electron transmission, spin-selective

Spin Selective Electron Transmission Through Monolayers of Chiral Molecules... 

Spin selectivity in electron transmission through self-assembled monolayers (SAMs) of chiral molecules was determined by using circularly polarized light for ejecting spin-polarized electrons from gold substrate covered with the SAM (see Fig. 1) [41]. SAMs were prepared from two molecules - either polyalanine or DNA. 

Fig. 1 Scheme of the experimental set-up used for monitoring spin selective electron transmission through organized organic thin films (OOTF)... 

Two effects were detected in the present study, the spin-selective electron transmission through monolayers made from ds-DNA and the large magnetization measured for these layers. In addition, it has been found that there is a clear difference between monolayers made from ss-DNA and those made from ds-DNA. This difference exists despite the fact that both types of molecules are chiral. 

Table 5.2 Summary of selected analytical methods for molecular environmental geochemistry. AAS Atomic absorption spectroscopy AFM Atomic force microscopy (also known as SFM) CT Computerized tomography EDS Energy dispersive spectrometry. EELS Electron energy loss spectroscopy EM Electron microscopy EPR Electron paramagnetic resonance (also known as ESR) ESR Electron spin resonance (also known as EPR) EXAFS Extended X-ray absorption fine structure FUR Fourier transform infrared FIR-TEM Fligh-resolution transmission electron microscopy ICP-AES Inductively-coupled plasma atomic emission spectrometry ICP-MS Inductively-coupled plasma mass spectrometry. Reproduced by permission of American Geophysical Union. O Day PA (1999) Molecular environmental geochemistry. Rev Geophysics 37 249-274. Copyright 1999 American Geophysical Union...

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