Anisotropic organization and microscopic manipulation of self-assembling synthetic porphyrin microrods that mimic chlorosomes: Bacterial light-harvesting systems

Chappaz-Gillot, C; Marek, PL; Blaive, BJ; Canard, G; Bürck, J; Garab, G; Hahn, H; Jávorfi, T; Kelemen, L; Krupke, R; Mössinger, D; Ormos, P; Reddy, CM; Roussel, C; Steinbach, G; Szabó, M; Ulrich, AS; Vanthuyne, N; Vijayaraghavan, A; Zupcanova, A; Balaban, TS

Anisotropic organization and microscopic manipulation of self-assembling synthetic porphyrin microrods that mimic chlorosomes: Bacterial light-harvesting systems

Chappaz-Gillot, C Marek, PL Blaive, BJ Canard, G Bürck, J Garab, G Hahn, H Jávorfi, T Kelemen, L Krupke, R Mössinger, D Ormos, P Reddy, CM Roussel, C Steinbach, G Szabó, M

Ulrich, AS Vanthuyne, N Vijayaraghavan, A Zupcanova, A Balaban, TS

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Publication Type:: Journal Article
Citation:: Journal of the American Chemical Society, 2012, 134 (2), pp. 944 - 954
Issue Date:: 2012-01-18

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Field	Value	Language
dc.contributor.author	Chappaz-Gillot, C	en_US
dc.contributor.author	Marek, PL	en_US
dc.contributor.author	Blaive, BJ	en_US
dc.contributor.author	Canard, G	en_US
dc.contributor.author	Bürck, J	en_US
dc.contributor.author	Garab, G	en_US
dc.contributor.author	Hahn, H	en_US
dc.contributor.author	Jávorfi, T	en_US
dc.contributor.author	Kelemen, L	en_US
dc.contributor.author	Krupke, R	en_US
dc.contributor.author	Mössinger, D	en_US
dc.contributor.author	Ormos, P	en_US
dc.contributor.author	Reddy, CM	en_US
dc.contributor.author	Roussel, C	en_US
dc.contributor.author	Steinbach, G	en_US
dc.contributor.author	Szabó, M https://orcid.org/0000-0001-6235-2894	en_US
dc.contributor.author	Ulrich, AS	en_US
dc.contributor.author	Vanthuyne, N	en_US
dc.contributor.author	Vijayaraghavan, A	en_US
dc.contributor.author	Zupcanova, A	en_US
dc.contributor.author	Balaban, TS	en_US
dc.date.issued	2012-01-18	en_US
dc.identifier.citation	Journal of the American Chemical Society, 2012, 134 (2), pp. 944 - 954	en_US
dc.identifier.issn	0002-7863	en_US
dc.identifier.uri	http://hdl.handle.net/10453/31412
dc.description.abstract	Being able to control in time and space the positioning, orientation, movement, and sense of rotation of nano- to microscale objects is currently an active research area in nanoscience, having diverse nanotechnological applications. In this paper, we demonstrate unprecedented control and maneuvering of rod-shaped or tubular nanostructures with high aspect ratios which are formed by self-assembling synthetic porphyrins. The self-assembly algorithm, encoded by appended chemical-recognition groups on the periphery of these porphyrins, is the same as the one operating for chlorosomal bacteriochlorophylls (BChl's). Chlorosomes, rod-shaped organelles with relatively long-range molecular order, are the most efficient naturally occurring light-harvesting systems.(1, 2) They are used by green photosynthetic bacteria to trap visible and infrared light of minute intensities even at great depths, e.g., 100 m below water surface or in volcanic vents in the absence of solar radiation. In contrast to most other natural light-harvesting systems, the chlorosomal antennae are devoid of a protein scaffold to orient the BChl's; thus, they are an attractive goal for mimicry by synthetic chemists, who are able to engineer more robust chromophores to self-assemble. Functional devices with environmentally friendly chromophores-which should be able to act as photosensitizers within hybrid solar cells, leading to high photon-to-current conversion efficiencies even under low illumination conditions-have yet to be fabricated. The orderly manner in which the BChl's and their synthetic counterparts self-assemble imparts strong diamagnetic and optical anisotropies and flow/shear characteristics to their nanostructured assemblies, allowing them to be manipulated by electrical, magnetic, or tribomechanical forces. © 2011 American Chemical Society.	en_US
dc.relation.ispartof	Journal of the American Chemical Society	en_US
dc.relation.isbasedon	10.1021/ja203838p	en_US
dc.subject.classification	General Chemistry	en_US
dc.subject.mesh	Bacteriochlorophylls	en_US
dc.subject.mesh	Porphyrins	en_US
dc.subject.mesh	Light-Harvesting Protein Complexes	en_US
dc.subject.mesh	Membranes, Artificial	en_US
dc.subject.mesh	Microscopy, Electron, Scanning	en_US
dc.subject.mesh	Circular Dichroism	en_US
dc.subject.mesh	Molecular Structure	en_US
dc.subject.mesh	Anisotropy	en_US
dc.subject.mesh	Models, Molecular	en_US
dc.title	Anisotropic organization and microscopic manipulation of self-assembling synthetic porphyrin microrods that mimic chlorosomes: Bacterial light-harvesting systems	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	134	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	03 Chemical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	134	en_US

Abstract:

Being able to control in time and space the positioning, orientation, movement, and sense of rotation of nano- to microscale objects is currently an active research area in nanoscience, having diverse nanotechnological applications. In this paper, we demonstrate unprecedented control and maneuvering of rod-shaped or tubular nanostructures with high aspect ratios which are formed by self-assembling synthetic porphyrins. The self-assembly algorithm, encoded by appended chemical-recognition groups on the periphery of these porphyrins, is the same as the one operating for chlorosomal bacteriochlorophylls (BChl's). Chlorosomes, rod-shaped organelles with relatively long-range molecular order, are the most efficient naturally occurring light-harvesting systems.(1, 2) They are used by green photosynthetic bacteria to trap visible and infrared light of minute intensities even at great depths, e.g., 100 m below water surface or in volcanic vents in the absence of solar radiation. In contrast to most other natural light-harvesting systems, the chlorosomal antennae are devoid of a protein scaffold to orient the BChl's; thus, they are an attractive goal for mimicry by synthetic chemists, who are able to engineer more robust chromophores to self-assemble. Functional devices with environmentally friendly chromophores-which should be able to act as photosensitizers within hybrid solar cells, leading to high photon-to-current conversion efficiencies even under low illumination conditions-have yet to be fabricated. The orderly manner in which the BChl's and their synthetic counterparts self-assemble imparts strong diamagnetic and optical anisotropies and flow/shear characteristics to their nanostructured assemblies, allowing them to be manipulated by electrical, magnetic, or tribomechanical forces. © 2011 American Chemical Society.

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http://hdl.handle.net/10453/31412