The development of biological sensors with high selectivity and sensitivity benefits from the use of well-defined size- and shape-controlled nanoparticles. We report a facile, one pot, green synthetic process for developing size- and shape-controlled metallic and bimetallic nanomaterials, as well as studies to understand their interactions under various environmental conditions. Monodisperse metallic and bimetallic nanoparticles were fabricated at room temperature using environmentally friendly reaction conditions.  These nanostructures were produced with controlled size, shape, composition, crystallinity, and structure (i.e. hollow vs. solid). Controlling the morphology of metal nanoparticles is essential toward understanding their structure-function properties especially under varying temperature, pH and ionic strength conditions.   Shape control of metal nanomaterials is important because it allows the tuning of their optical, magnetic, and catalytic properties.  The synthesis of well-defined anisotropic nanoparticles under green reaction conditions is important toward advances in nanoscale synthesis. Characterization of the nanoparticles was carried out using high resolution transmission electron microscopy (HRTEM), x-ray diffraction (XRD), small angle electron diffraction (SAED) and energy dispersive spectroscopy (EDS). The use of the nanomaterials in the detection of biological contaminants will be presented.

Shape-controlled nanoscale materials and their applications as biological sensors

246th National Meeting (2013)

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