Water coordinated zinc dioxo-chlorin and porphyrin self-assemblies as chlorosomal mimics: Variability of supramolecular interactions

Jesorka, Aldo, 1967 (författare): Chalmers tekniska högskola,Chalmers University of Technology

Holzwarth, A. R. (författare)

Eichöfer, Andreas (författare): Karlsruher Institut für Technologie (KIT),Karlsruhe Institute of Technology (KIT)

Reddy, Chilla Malla (författare): Indian Institute of Science,Karlsruher Institut für Technologie (KIT),Karlsruhe Institute of Technology (KIT)

Tamiaki, Hitoshi (författare): Ritsumeikan Universitet,Ritsumeikan University

Katterle, M. (författare)

Naubron, Jean-Valere (författare): Aix-Marseille Université,Aix Marseille University

Balaban, Teodor Silviu (författare): Aix-Marseille Université,Aix Marseille University,Karlsruher Institut für Technologie (KIT),Karlsruhe Institute of Technology (KIT)

(creator_code:org_t)

2012-06-01
2012
Engelska.
Ingår i: Photochemical and Photobiological Sciences. - : Springer Science and Business Media LLC. - 1474-9092 .- 1474-905X. ; 11:6, s. 1069-1080

Relaterad länk:: https://doi.org/10.1...; visa fler...; https://research.cha...; visa färre...

Abstract Ämnesord

Stäng

Semisynthetic zinc chlorins are shown for the first time to self-assemble in the absence of an intrinsic hydroxy group, which is always present in the chlorosomal bacteriochlorophylls (BChl's) c, d and e. Instead, the presently studied compounds have carbonyl groups. These cannot function as hydrogen bond donating groups. However due to interspacing water molecules bound to the zinc ion, double hydrogen bonding can occur to adjacent tetrapyrrolic macrocycles equipped with carbonyl recognition groups. Solution studies comprising UV-Vis absorption, electronic circular dichroism (ECD) and FT-IR show that different aggregates are formed in hydrated solvents in comparison to dry nonpolar solvents. Single crystal X-ray studies show variable supramolecular interactions either with interspacing water molecules coordinating the Zn ion within a porphyrin or with the 17 2 carbonyl group of a chlorin ligating the Zn ion. Our findings have implications for a minimalistic design of self-assembling chromophores, which can act as efficient light-harvesting units.

Av författaren/redakt...: Jesorka, Aldo, 1 ...; Holzwarth, A. R.; Eichöfer, Andrea ...; Reddy, Chilla Ma ...; Kinoshita, Y.; Tamiaki, Hitoshi; visa fler...; Katterle, M.; Naubron, Jean-Va ...; Balaban, Teodor ...; visa färre...

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