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Functionalized Nano...
Functionalized Nanostructures: Redox-Active Porphyrin Anchors for Supramolecular DNA Assemblies
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- Börjesson, Karl, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wiberg, Joanna, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- El-Sagheer, Afaf (author)
- University of Southampton,Suez Canal University
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- Ljungdahl, Thomas, 1974 (author)
- Göteborgs universitet,University of Gothenburg
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- Mårtensson, Jerker, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Brown, T. (author)
- University of Southampton
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- Nordén, Bengt, 1945 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Albinsson, Bo, 1963 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2010-09-01
- 2010
- English.
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In: ACS Nano. - : American Chemical Society (ACS). - 1936-086X .- 1936-0851. ; 4:9, s. 5037-5046
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We have synthesized and studied a supramolecular system comprising a 39-mer DNA with porphyrin-modified thymidine nucleosides anchored to the surface of large unilamellar vesicles (liposomes). Liposome porphyrin binding characteristics, such as orientation, strength, homogeneity, and binding site size, was determined, suggesting that the porphyrin is well suited as a photophysical and redox-active lipid anchor, in comparison to the inert cholesterol anchor commonly used today. Furthermore, the binding characteristics and hybridization capabilities were studied as a function of anchor size and number of anchoring points, properties that are of importance for our future plans to use the addressability of these redox-active nodes in larger DNA-based nanoconstructs. Electron transfer from photoexcited porphyrin to a lipophilic benzoquinone residing in the lipid membrane was characterized by steady-state and time-resolved fluorescence and verified by femtosecond transient absorption.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- electron
- dependence
- transfer
- membrane
- porphyrin
- supramolecular
- DNA
- nanotechnology
- construction
- scaffold
- bridge-acceptor systems
- flow
- orientation
- fluorescence
- dichroism
- liposomes
- membrane
- photoinduced electron-transfer
Publication and Content Type
- art (subject category)
- ref (subject category)
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ACS Nano
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- By the author/editor
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Börjesson, Karl, ...
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Wiberg, Joanna, ...
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El-Sagheer, Afaf
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Ljungdahl, Thoma ...
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Mårtensson, Jerk ...
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Brown, T.
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Nordén, Bengt, 1 ...
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Albinsson, Bo, 1 ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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ACS Nano
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Chalmers University of Technology