Laboratory for Molecular Photonics

Department of Chemistry

University of Miami

Goal: The goal of this project was the identification of strategies to reproduce logic operations at the molecular level under the influence of optical stimulations.

Results: The Laboratory of Molecular Photonics developed a three-state molecular switch, based on a photochromic spiropyran, and demonstrated that this system can reproduce complex logic functions, when operated in conjunction with chromogenic, electroactive or fluorescent partners.

Keywords: Fluorescence Isomerizations Logic Gates Molecular Switches Photochromism Proton Transfer Spiropyrans

Selected Articles

  "Multichannel Digital Transmission in an Optical Network of Communicating Molecules": F. M. Raymo, S. Giordani, J. Am. Chem. Soc., 2002, 124, 2004–2007

  "All-Optical Processing with Molecular Switches": F. M. Raymo, S. Giordani, Proc. Natl. Acad. Sci. USA, 2002, 99, 4941–4944

  "Memory Effects Based on Intermolecular Photoinduced Proton Transfer": F. M. Raymo, R. J. Alvarado, S. Giordani, M. A. Cejas, J. Am. Chem. Soc., 2003, 125, 2361–2364

"Fluorescence Modulation in Polymer Bilayers Containing Fluorescent and Photochromic Dopants": M. Tomasulo, S. Giordani, F. M. Raymo, Adv. Funct. Mater., 2005, 15, 787–794

Selected Reviews

  "Digital Processing and Communication with Molecular Switches": F. M. Raymo, Adv. Mater., 2002, 14, 401–414

  "Optical Processing with Photochromic Switches": F. M. Raymo, M. Tomasulo, Chem. Eur. J., 2006, 12, 3186–3193

Chemical and optical inputs can be exploited to control optical outputs on the basis of the reversible interconversion of three molecules differing in their color.