Effects of electron-beam exposure on a ruthenium nanocluster polymer

The properties of the ruthenium nanocluster polymer of formula [Ru6C(CO)(15)P(C6H5)(2)CCP(C6H5)(2)](n) are studied by atomic-force microscopy, Fourier-transform infrared spectroscopy, and electron microscopy as a function of electron-beam exposure. These properties are related to the electrical conductivity, which is measured at various temperatures and electric fields. A hopping correlation length of 240 nm is deduced and explained on the basis of the formation of ruthenium superclusters in an insulating matrix. (C) 2001 American Institute of Physics.