Self-Assembly of Porphyrin Nanostructures at the Interface between Two Immiscible Liquids Article Swipe

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Andrés F. Molina-Osorio , David L. Cheung , Colm O’Dwyer , Andrew Stewart , Manuel Dossot , Grégoire Herzog , Micheál D. Scanlon ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.1021/acs.jpcc.0c00437

One of the many evolved functions of photosynthetic organisms is to synthesize light harvesting nanostructures from photoactive molecules such as porphyrins. Engineering synthetic analogues with optimized molecular order necessary for the efficient capture and harvest of light energy remains challenging. Here, we address this challenge by reporting the self-assembly of zinc(II) meso-tetrakis(4-carboxyphenyl)porphyrins into films of highly ordered nanostructures. The self-assembly process takes place selectively at the interface between two immiscible liquids (water|organic solvent), with kinetically stable interfacial nanostructures formed only at pH values close to the pKa of the carboxyphenyl groups. Molecular dynamics simulations suggest that the assembly process is driven by an interplay between the hydrophobicity gradient at the interface and hydrogen bonding in the formed nanostructure. Ex situ XRD analysis and in situ UV/vis and steady state fluorescence indicates the formation of chlathrate type nanostructures that retain the emission properties of their monomeric constituents. The self-assembly method presented here avoids the use of acidic conditions, additives such as surfactants and external stimuli, offering an alternative for the realization of light-harvesting antennas in artificial photosynthesis technologies.

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Nanostructure Porphyrin Monomer Molecule Solvent Self-assembly Materials science Artificial photosynthesis Fluorescence Hydrogen bond Nanotechnology Chemical engineering Photochemistry Polymer Chemistry Organic chemistry Catalysis Physics Photocatalysis Composite material Engineering Quantum mechanics

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Type: article
Language: en
Landing Page: https://doi.org/10.1021/acs.jpcc.0c00437
OA Status: green
Cited By: 22
References: 57
Related Works: 10
OpenAlex ID: https://openalex.org/W3009810396

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DOI: https://doi.org/10.1021/acs.jpcc.0c00437

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Title: Self-Assembly of Porphyrin Nanostructures at the Interface between Two Immiscible Liquids

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Language: en

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Publication year: 2020

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Publication date: 2020-03-06

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Authors: Andrés F. Molina-Osorio, David L. Cheung, Colm O’Dwyer, Andrew Stewart, Manuel Dossot, Grégoire Herzog, Micheál D. Scanlon

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Landing page: https://doi.org/10.1021/acs.jpcc.0c00437

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Concepts: Nanostructure, Porphyrin, Monomer, Molecule, Solvent, Self-assembly, Materials science, Artificial photosynthesis, Fluorescence, Hydrogen bond, Nanotechnology, Chemical engineering, Photochemistry, Polymer, Chemistry, Organic chemistry, Catalysis, Physics, Photocatalysis, Composite material, Engineering, Quantum mechanics

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Cited by: 22

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Citations by year (recent): 2025: 1, 2024: 2, 2023: 2, 2022: 4, 2021: 10

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