Photoconductivity of Self-Assembled Porphyrin Nanorods - American

HaVerford, PennsylVania 19041, Department of Physics and Astronomy, ... Mechanical Engineering, Columbia UniVersity, New York, New York 10027...
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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 (