(142f) Single Walled Carbon Nanotube Fluorescence Modulation In Response to Hydrogel Swelling
Single walled carbon nanotubes (SWNT) fluoresce is still a new and exciting area of research. Modulation of SWNT fluorescence has previously been demonstrated by adsorption of electron withdrawing molecules[1,2], DNA rearrangement due to cation adsorption and via DNA hybridization on the SWNT surface; however, new methods to modulate SWNT fluorescence will allow SWNT use in new applications. We demonstrate that SWNT immobilized in a poly(vinyl) alcohol hydrogel show shifts in fluorescence emission maxima during hydrogel swelling / deswelling. The mechanism of SWNT fluorescence modulation and potential applications of SWNT based hydrogels will be discussed.
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