Photoresistivity of aligned and random carbon nanotube networks

PHYS 503

Jay D. Shah, jdshah@uncc.edu, Laura E Roberts, lerober1@uncc.edu, Joeseph Springs, jbspring@uncc.edu, and Jordan C. Poler, jpoler@uncc.edu. Department of Chemistry and Center for Optoelectronics and Optical Communications, University of North Carolina at Charlotte, 9201 University City Blvd., Charlotte, NC 28223-0001
Binding of single walled carbon nanotubes with optically and electrochemically active ruthenium coordination complexes have yielded an enhanced photoconductive response. Through electron transfer from the complex through the ligand and to the electron accepting nanotube we can modulate the photoconductivity response. We compare the behavior random networks of pristine single walled nanotubes to that of molecularly combed and aligned acid-shortened nanotubes. We will also present studies of this effect on films of vertically aligned single walled nanotubes. These results suggest progress toward novel supramolecular control over carbon nanotube based sensors. Absorbance, SEM, AFM and photo-resistivity data will be presented.
 

PHYS Poster Session - Nanostructured Materials and Nanophotonics
7:30 PM-10:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster

Sci-Mix
8:00 PM-10:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Sci-Mix

Division of Physical Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008