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A switchable self-a...
A switchable self-assembling and disassembling chiral system based on a porphyrin-substituted phenylalanine-phenylalanine motif
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- Charalambidis, Georgios (författare)
- University of Crete, Greece
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- Georgilis, Evangelos (författare)
- University of Crete, Greece; Fdn Research and Technology Hellas FORTH, Greece
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- Panda, Manas K. (författare)
- University of Crete, Greece; CSIR NIIST, India
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- Anson, Christopher E. (författare)
- Karlsruhe Institute Technology, Germany
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- Powell, Annie K. (författare)
- Karlsruhe Institute Technology, Germany; Karlsruhe Institute Technology, Germany
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- Doyle, Stephen (författare)
- Karlsruhe Institute Technology, Germany; Karlsruhe Institute Technology, Germany
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- Moss, David (författare)
- Karlsruhe Institute Technology, Germany; Karlsruhe Institute Technology, Germany
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- Jochum, Tobias (författare)
- Karlsruhe Institute Technology, Germany; Karlsruhe Institute Technology, Germany; Abcr GmbH, Germany
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- Horton, Peter N. (författare)
- University of Southampton, England
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- Coles, Simon J. (författare)
- University of Southampton, England
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- Linares, Mathieu (författare)
- Linköpings universitet,Bioinformatik,Tekniska fakulteten
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- Beljonne, David (författare)
- University of Mons UMONS, Belgium; University of Mons UMONS, Belgium
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- Naubron, Jean-Valere (författare)
- Aix Marseille University, France
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- Conradt, Jonas (författare)
- Karlsruhe Institute Technology, Germany; Karlsruhe Institute Technology, Germany
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- Kalt, Heinz (författare)
- Karlsruhe Institute Technology, Germany; Karlsruhe Institute Technology, Germany
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- Mitraki, Anna (författare)
- University of Crete, Greece; Fdn Research and Technology Hellas FORTH, Greece
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- Coutsolelos, Athanassios G. (författare)
- University of Crete, Greece
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- Silviu Balaban, Teodor (författare)
- Aix Marseille University, France
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(creator_code:org_t)
- 2016-09-01
- 2016
- Engelska.
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Ingår i: Nature Communications. - : NATURE PUBLISHING GROUP. - 2041-1723. ; 7:12657
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Artificial light-harvesting systems have until now not been able to self-assemble into structures with a large photon capture cross-section that upon a stimulus reversibly can switch into an inactive state. Here we describe a simple and robust FLFL-dipeptide construct to which a meso-tetraphenylporphyrin has been appended and which self-assembles to fibrils, platelets or nanospheres depending on the solvent composition. The fibrils, functioning as quenched antennas, give intense excitonic couplets in the electronic circular dichroism spectra which are mirror imaged if the unnatural FDFD-analogue is used. By slightly increasing the solvent polarity, these light-harvesting fibres disassemble to spherical structures with silent electronic circular dichroism spectra but which fluoresce. Upon further dilution with the nonpolar solvent, the intense Cotton effects are recovered, thus proving a reversible switching. A single crystal X-ray structure shows a head-to-head arrangement of porphyrins that explains both their excitonic coupling and quenched fluorescence.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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Charalambidis, G ...
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Georgilis, Evang ...
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Panda, Manas K.
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Anson, Christoph ...
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Powell, Annie K.
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Doyle, Stephen
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visa fler...
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Moss, David
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Jochum, Tobias
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Horton, Peter N.
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Coles, Simon J.
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Linares, Mathieu
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Beljonne, David
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Naubron, Jean-Va ...
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Conradt, Jonas
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Kalt, Heinz
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Mitraki, Anna
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Coutsolelos, Ath ...
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Silviu Balaban, ...
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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och Fysik
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och Atom och molekyl ...
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Linköpings universitet