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12 Nov 2001

Volume 79, Issue 20, pp. 3215-3366

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Green fluorescent proteins as optically controllable elements in bioelectronics

Riccardo A. G. Cinelli, Vittorio Pellegrini, Aldo Ferrari, Paolo Faraci, Riccardo Nifosì, Mudit Tyagi, Mauro Giacca, and Fabio Beltram

Appl. Phys. Lett. 79, 3353 (2001); http://dx.doi.org/10.1063/1.1419047 (3 pages) | Cited 20 times

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Show Abstract
A single-biomolecule optical toggle switch is demonstrated based on a mutated green fluorescent protein (GFP). We have exploited molecular biology techniques to tailor the GFP molecular structure and photophysical properties and to give it optically controlled bistability between two distinct states. We present optical control of the fluorescence dynamics with two laser beams at 476 and 350 nm down to the ultimate limit of single molecules. These results indicate that GFP-class fluorophores are promising candidates for the realization of biomolecular devices such as volumetric optical memories and optical switches. © 2001 American Institute of Physics.
Show PACS
42.65.Pc Optical bistability, multistability, and switching, including local field effects
85.65.+h Molecular electronic devices
87.15.M- Spectra of biomolecules
87.14.E- Proteins
82.37.Rs Single molecule manipulation of proteins and other biological molecules
78.55.Kz Solid organic materials
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