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A dihydroindolizine...
A dihydroindolizine-porphyrin dyad as molecule-based all-photonic AND and NAND gates
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- Andreasson, Joakim, 1973 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Terazono, Yuichi (författare)
- Arizona State University
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- Eng, Mattias P, 1977 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa fler...
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- Moore, A. L. (författare)
- Arizona State University
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- Moore, T. A. (författare)
- Arizona State University
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- Gust, D. (författare)
- Arizona State University
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- Engelska.
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Ingår i: Dyes and Pigments. - : Elsevier BV. - 0143-7208 .- 1873-3743. ; 89:3, s. 284-289
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http://publications.... (primary) (free)
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http://publications....
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A molecular dyad consisting of a photochromic dihydroindolizine unit covalently linked to a porphyrin performs, when illuminated through a third-harmonic-generating crystal, the functions of both an AND and a NAND Boolean logic gate with shared all-optical inputs. The NAND gate is of particular interest as it is a so-called universal gate, and hence all other digital systems can be implemented by combinations of NAND gates. The functions of the AND and the NAND gates rely on changes in absorption and emission of the dyad in the visible spectral region upon isomerization of the photochromic unit. The change in absorption which forms the basis for the AND gate function is ascribed to the colorization/decolorization of the photochrome itself in response to the optical inputs. The variation in emission intensity which constitutes the NAND gate function is a result of the changes in redox properties of the photochrome that follow upon isomerization, such that only one of the two isomers is competent to quench the porphyrin emission by electron transfer.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Nyckelord
- Porphyrinoids
- Photochemistry
- Chromophores
- Logic gates
- Photochromism
- Molecular devices
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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