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A molecule-based 1 : 2 digital demultiplexer

Joakim Andréasson (Institutionen för kemi- och bioteknik, Fysikalisk kemi) ; S. D. Straight ; S. Bandyopadhyay ; R. H. Mitchell ; T. A. Moore ; A. L. Moore ; D. Gust
Journal of Physical Chemistry C (1932-7447). Vol. 111 (2007), 38, p. 14274-14278.
[Artikel, refereegranskad vetenskaplig]

A trichromophoric molecule consisting of a porphyrin linked to both a dihydropyrene and a dihydroindolizine-type photochrome, in combination with a third harmonic generating crystal, functions as a 1:2 digital demultiplexer with photonic inputs and outputs. Each of the two photochromes may be cycled independently between two metastable forms, leading to four photoisomers, three of which are used in the demultiplexer. These isomers interact photochemically with the porphyrin in order to yield the demultiplexer function. With the address input (1064-nm light) turned off, one Output of the device (porphyrin fluorescence) tracks the state of the data input (532-nm light). When the address input is turned on, the second output (absorbance at 572 nm) tracks the state of the data input, while the first output remains off. The demultiplexer does not require chemical or electrical inputs, and can cycle through its operational sequences multiple times.



Denna post skapades 2008-01-08. Senast ändrad 2017-09-14.
CPL Pubid: 64883

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Fysikalisk kemi (2005-2014)

Ämnesområden

Kemi
Fysikalisk kemi

Chalmers infrastruktur