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1 Results This paper presents the development of platinum nanocomposites structures based on organically modified c.a.2 nm core platinum nanoparticles.The chemical modification of the 4-mercaptoaniline functionalized particles by various in coming molecules is evidenced and precisely quantified.The particles can be dissolved like molecules in various solvents depending on the features of the new crown and X-rays shows that the interparticle distance is affected by the crown modification.These platinum nanoparticles can be used to build up mixed LB films in well controlled way[1].The nanostructures are characterized by X-rays photoelectron[2] spectroscopy,IR spectroscopy,and small angle X-rays diffraction.The approach allows to build up well defined structures containing different particles in which electrical and electrochemical behaviour can be studied[3].The d.c.electrical properties are influenced by the crown modification as well as the electrochemical properties towards oxygen reduction.As a conclusion we believe that these systems are of particular interest to understand fundamental nanoscale events involved in electrocatalysis and could be of practical interest in practical fuel cells devices.
1 Results This paper presents the development of platinum nanocomposites based on organically modified ca2 nm core platinum nanoparticles. The chemical modification of the 4-mercaptoaniline functionalized particles by various in coming molecules is evidenced and precisely quantified. The particles can be dissolved like molecules in various solvents depending on the features of the new crown and X-rays shows that the interparticle distance is affected by the crown modification. The se platinum nanoparticles can be used to build up up mixed LB films in well controlled way. [1]. characterized by X-rays photoelectron [2] spectroscopy, IR spectroscopy, and small angle X-rays diffraction.The approach allows to build up well defined structures containing different particles in which electrical and electrochemical behavior can be studied [3]. The dcelectrical properties are influenced by the crown modification as well as the electrochemical properties towards oxygen re duction.As a conclusion we believe that these systems are of particular interest to understand fundamental nanoscale events involved in electrocatalysis and could be be practical interest in practical fuel cells devices.