(142f) Single Walled Carbon Nanotube Fluorescence Modulation In Response to Hydrogel Swelling Conference: AIChE Annual MeetingYear: 2008Proceeding: 2008 AIChE Annual MeetingGroup: Materials Engineering and Sciences DivisionSession: Composites III Time: Monday, November 17, 2008 - 4:55pm-5:15pm Authors: Barone, P. W., Massachusetts Institute of Technology Ortiz, R., Technical University of Munich Strano, M. S., Massachusetts Institute of Technology 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. 1. Barone, P.W.; et al., Nature Materials (2005), 4, 86-92. 2. Satishkumar, B.C.; et al. Nature Nanotechnology (2007), 2, 560-564. 3. Heller, D.A.; et al. Science (2006), 311, 508-511. 4. Jeng, E.S.; et al. Nano Letters (2006), 6, 371-375.