Porphyrin-Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self-Assembly

Frühbeißer, Sabine; Gröhn, Franziska

doi:10.1002/macp.201600526

Cited by 12 publications

(10 citation statements)

References 90 publications

(141 reference statements)

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“…Specifically, we investigate the structure formation in aqueous solution of Zn‐TPPS, Co‐TPPS, Ni‐TPPS, Mn‐TPPS, and Fe‐TPPS with polyamidoamine (PAMAM) dendrimer of generation 4 (G4) or linear polydiallyldimethyl‐ammoniumchloride (PDADMAC; Scheme ). This extends a previous study with the free base porphyrin only that considered the role of polyelectrolyte and charge …”

Section: Introductionsupporting

confidence: 85%

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

Frühbeißer

Werner

Gröhn

2017

J Polym Sci B Polym Phys

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This study investigates the influence of different metal centers in porphyrins and of different polyelectrolyte architectures on the formation of supramolecular metalloporphyrin-polyelectrolyte assemblies in aqueous solution via electrostatic self-assembly. Metal-analogues of the tetravalent anionic meso-tetrakis(4-sulfonatophenyl)-porphyrin (with Zn 21 , Co 21 , Ni 21 , Mn 31 , and Fe 31 ) are combined with the cationic dendrimer of generation 4 or with the linear polydiallyldimethylammoniumchloride. Dynamic light scattering and atomic force microscopy reveal that the different molecular geometries of the metalloporphyrins resulting from axial ligands determine the size and the stability of the aggregates. A thermodynamic study elucidates the importance of the polymer architecture in controlling the size of the assembly and the role of the metal center.

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Section: Introductionsupporting

confidence: 85%

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

Frühbeißer

Werner

Gröhn

2017

J Polym Sci B Polym Phys

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“…The influence of the polyelectrolyte structure on TPPS assembly has been studied by Grohn and Fruhbeisser [64]. Different polyelectrolytes have been systematically studied, changing both the morphology and the mass of the polyelectrolyte, going from a dendrimer to a polylysine brush through linear polylysines of different lengths (Figure 14) by using various spectroscopic techniques.…”

Section: Effects Of Chemical External Stimulimentioning

confidence: 99%

Section: Figures and Schemesmentioning

confidence: 99%

The Assembly of Porphyrin Systems in Well-Defined Nanostructures: An Update

et al. 2019

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The interest in assembling porphyrin derivatives is widespread and is accounted by the impressive impact of these suprastructures of controlled size and shapes in many applications from nanomedicine and sensors to photocatalysis and optoelectronics. The massive use of porphyrin dyes as molecular building blocks of functional materials at different length scales relies on the interdependent pair properties, consisting of their chemical stability/synthetic versatility and their quite unique physicochemical properties. Remarkably, the driven spatial arrangement of these platforms in well-defined suprastructures can synergically amplify the already excellent properties of the individual monomers, improving conjugation and enlarging the intensity of the absorption range of visible light, or forming an internal electric field exploitable in light-harvesting and charge-and energy-transport processes. The countless potentialities offered by these systems means that self-assembly concepts and tools are constantly explored, as confirmed by the significant number of published articles related to porphyrin assemblies in the 2015–2019 period, which is the focus of this review.

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“…The Gröhn group introduced a novel concept for forming electrostatically self-assembled nano-objects in solution by using “structural counterions” and presented a variety of supramolecular structures in solution formed by electrostatic self-assembly ( Gröhn, 2008 ; Li et al, 2009 ; Ruthard et al, 2009 ; Willerich et al, 2009 ; Gröhn, 2010 ; Gröhn et al, 2010 ; Kutz et al, 2016 ; Mariani et al, 2017a ; Frühbeißer and Gröhn, 2017 ; Frühbeißer et al, 2018 ). Similar to the material and the multilayer case, structures from various building block combinations can be created.…”

Section: Nano-objects By Electrostatic Self-assembly In Solutionmentioning

confidence: 99%

Functional Nano-Objects by Electrostatic Self-Assembly: Structure, Switching, and Photocatalysis

2022

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The design of functional nano-objects by electrostatic self-assembly in solution signifies an emerging field with great potential. More specifically, the targeted combination of electrostatic interaction with other effects and interactions, such as the positioning of charges on stiff building blocks, the use of additional amphiphilic, π−π stacking building blocks, or polyelectrolytes with certain architectures, have recently promulgated electrostatic self-assembly to a principle for versatile defined structure formation. A large variety of architectures from spheres over rods and hollow spheres to networks in the size range of a few tenths to a few hundred nanometers can be formed. This review discusses the state-of-the-art of different approaches of nano-object formation by electrostatic self-assembly against the backdrop of corresponding solid materials and assemblies formed by other non-covalent interactions. In this regard, particularly promising is the facile formation of triggerable structures, i.e. size and shape switching through light, as well as the use of electrostatically assembled nano-objects for improved photocatalysis and the possible solar energy conversion in the future. Lately, this new field is eliciting an increasing amount of understanding; insights and limitations thereof are addressed in this article. Special emphasis is placed on the interconnection of molecular building block structures and the resulting nanoscale architecture via the key of thermodynamics.

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Porphyrin-Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self-Assembly

Cited by 12 publications

References 90 publications

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

The Assembly of Porphyrin Systems in Well-Defined Nanostructures: An Update

Functional Nano-Objects by Electrostatic Self-Assembly: Structure, Switching, and Photocatalysis

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