NANO LETTERS
Photoconductivity of Self-Assembled Porphyrin Nanorods
2004 Vol. 4, No. 7 1261-1265
Alexander D. Schwab,†,‡ Deirdre E. Smith,†,§ Brooks Bond-Watts,† Danvers E. Johnston,§ James Hone,| Alan T. Johnson,§ Julio C. de Paula,*,† and Walter F. Smith*,‡ Departments of Chemistry and Physics, HaVerford College, HaVerford, PennsylVania 19041, Department of Physics and Astronomy, UniVersity of PennsylVania, Philadelphia, PennsylVania 19104, and Department of Mechanical Engineering, Columbia UniVersity, New York, New York 10027 Received April 19, 2004; Revised Manuscript Received May 17, 2004
ABSTRACT The photoconductivity of nanorods self-assembled from meso-tetrakis(4-sulfonatophenyl)porphine is described. The nanorods are insulating in the dark. Upon illumination with 488 nm light, the nanorods become photoconductive, exhibiting a rapid turn on/off (
