ChiropticenesTMare a novel class of designer molecular switch materials, which are triggered by a combination of both light and electric field. Chiropticenes contain an optically active (chiral) center and as a consequence provide two accessible equal energy states resembling the molecular elements of binary logic. Functioning as a chiroptical dipole switch, Chiropticenes promise broad applications in emerging optoelectronic and molecular electronic technologies. A synthetic protocol for the preparation of Anthraquinone dye based Chiropticenes is presented and their thermal/optical switching behavior in solid state is described.
KEYWORDS: Switches, Switching, Argon, Chemical species, Chromophores, Carbon, Temperature metrology, Thermography, Optoelectronic devices, Active optics
A series of structurally varied organic molecular switches have been prepared and their switching behavior examined. For thermally active compounds, the switching rates have been extracted from variable temperature NMR experiments and simulation studies. Additionally, chromophores have been incorporated for optical activation of thermally stable switches. Supramolecular architectures for constructing optoelectronic devices are also described.
Chiropticenes are a novel class of single-molecule chiroptical dipole switches. The fundamental mechanism of the Chiropticene switch is that the combination of light and electric field cause both the chirality and the dipole direction to be simultaneously reversed. The information stored in the Chiropticenes can be read nondestructively with circularly polarized light, which ensures erase-read- write capability. These molecular switches are exceptional in that they have the potential to be exploited on both the molecular and macroscopic scale. The Chiropticene switch has been designed for incorporation into an optical data storage device that will be faster and have a higher capacity than the currently available technology. The organic Chiropticene is molecularly engineered to fulfill all the requirements of a switching device in electronic applications. Its modular structure is able to provide an extraordinary capacity to chemically tune the properties of the switch molecule. The synthesis of the Chiropticenes and characterization of their optical properties will be presented. The design of nanodevice architectures based on Langmuir-Blodgett films and/or self-assembled monolayer swill also be presented.
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