We will discuss a method of deposition of rectangular grids of two nanofiber types, each nanofiber doped with a different reagent. Heat-welding of the softened nanofibers results in mixing the contents of the fibers at the intersection establishing a mixed junction where the reagents react. The concentration of the reagents in the fiber after evaporation of the solvent is 0.5 mmol/L, which corresponds to 2.5 zeptomoles (2.5�10E-21 moles, ca 1500 molecules) of a product in an attoreactor. The nanofibers can be deposited as individual fibers or in the form of mats that yield multiple attoliter reactors. We will also discuss the synthesis of multiple fluorescent sensors within one nanofiber mat, which would then serve as an optically encoded, (wavelength-addressable) cross-reactive attosensor array for sensing of metal ions.

Polymer nanochemistry: Ultra-small reactors and sensors

246th National Meeting (2013)

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