Fullerenols have been a subject of intense research in many fields with the claim of possible applications in biomedicine such as free-radical sponges, antioxidants, and photosensitizers. However, its transport characteristics, important in determining the feasibility of many applications, have not been studied yet. In this work, electrochemical impedance of aqueous solutions of two types of fullerenols (C(60)(OH)(22-26) and C(60)(OH)(18-22)(OK)(4)) was measured. Sample conductivity was extracted from impedance data, and a nonlinear concentration-dependent conductivity was found for one of two types (C(60)(OH)(18-22)(OK)(4)). A concentration-dependent mobility that accounts electrophoretic and relaxation effects could explain experimental data. As a result, we obtained some fullerenol parameters, relevant to transport phenomena: its hydrodynamic radius, the number of attached hydroxides, and the number of counterions solvated into solution. In addition, an important result for pharmaceutical applications has been discussed, which is the change of pH in water induced by the different concentrations of fullerenol, indicating it behaves as a weak acid.

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The propagation of electromagnetic fields in matter has been the subject of intensive studies since the discovery of its rich dynamics. Impedance measurements are one most used technique available to study material properties as well as electromagnetic devices and circuits. This way, novelties on device construction and circuit technology associated to new material properties and/or unusual field dynamics generally rely on results supported by impedance data. Recent advances on nanostructured materials explore astounding molecular properties derived from nanoscale levels and apply them to studies foucused on the generation of new devices. Accordingly, properties inherent to quantum dynamics can also generate unusual circuit elements, not included on the former development of the electromagnetic theory. On same footings, advances in field dynamics could also determine the advent of new technologies, producing immediate impact on our everyday life. In this work we present the results obtained by measuring the impedance of single spires and coils of specific geometry in the MHz range. They demonstrate that a new passive circuit element was found, which bears out the existence of an as yet unobserved propagation mode of the electromagnetic fields in matter. Our results also indicates that this effect is more evident using carbon made spires.The propagation of electromagnetic fields in matter has been the subject of intensive studies since the discovery of its rich dynamics. The variety of material properties relevant to the interaction of these fields with matter led to the development of passive circuit elements and active devices designed to control charges and currents in matter. This allows the advent of technologies inherent to almost all aspects of modern human life. Passive circuit elements are based on equations between field and matter variables, as defined by the constitutive relations, and are crucial in determining the best performance and economic viability of practical circuits. In this case, a property of Maxwell equations which has not yet been considered could determine new relations between fields and currents, thus allowing new circuit configurations or even new circuit elements. In this work we present the results obtained by measuring the impedance of single spires and coils of specific geometry in the MHz range. They demonstrate that a new passive circuit element was found, which bears out the existence of an as yet unobserved propagation mode of the electromagnetic fields in matter. Due to the immediate applicability of almost all electromagnetic phenomena, materials containing non-trivial electronic properties are highly sought-after. To this end, there has recently been a marked search for new materials or special molecular arrangements in the nanoscale domain, featuring better device performance, low fabrication cost and/or low

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