ZnO nanorods assembled with different porphyrins – size-tunable hybrid particles

Düring, Jasmin; Gröhn, Franziska

doi:10.1039/c6ra26964h

Cited by 15 publications

(13 citation statements)

References 44 publications

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“…This value lies in the range of typical surface coverages for polymers [73] and is below that of monomers-grafted ZnO. [74,75] This can be explained by higher steric interactions of the polymers compared to smaller molecules.…”

Section: 3quantitative Analysis Of the Adsorption And Optical Propmentioning

confidence: 90%

Enhancing intergranular conductivity in polycrystalline semiconductor assembly via polythiophene use

Gamon

Robert

Mercier

et al. 2019

Materials Chemistry and Physics

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We report here the synthesis and grafting of easily accessible catechol-terminated poly(3-hexylthiophenes) onto Al-doped ZnO particles (ZnO:Al) to obtain a performanceimproved polycrystalline assembly. These macromolecular binding species favor electronic conduction from one grain to another. Resistivity measurements of the grafted ZnO:Al powders performed under compression show an increased conductivity as compared to the pure ZnO:Al powders. The catechol function terminating the polymer appears to play an important role on its effect by forming a strong covalent bond with the surface of the zinc oxide. In particular, the conductivity obtained under characteristic pressures of lamination processes gives 1-10 Ω•cm, evidencing the great potential of such an approach for preparation of flexible or thermoreactive films.

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Section: 3quantitative Analysis Of the Adsorption And Optical Propmentioning

confidence: 90%

Enhancing intergranular conductivity in polycrystalline semiconductor assembly via polythiophene use

Gamon

Robert

Mercier

et al. 2019

Materials Chemistry and Physics

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“…For example, porphyrins are used in dye sensitized solar cells and photodynamic therapy. Porphyrins characteristic peaks cover a wide range of UV-Vis spectrum from 300 to 800 nm, including a sharp peak in nearly 300 nm, also known as soret band, and four Q peaks in the range of 500-800 nm [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of pineapple slab like morphology of ternary BiVO4/graphene/porphyrin nanocomposite with enhanced visible light photocatalytic activity

2020

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In this work, composites of BiVO 4 with different contents of graphene are synthesized. Photocatalytic investigations determine that the prepared BiVO 4-graphene (BVG) nanocomposite with 0.5% of graphene has higher photocatalytic activity among the synthesized nanocomposites. The photocatalytic efficiency of BVG is 2 times higher than BiVO 4. To improve the photocatalytic activity under visible light irradiation, the prepared nanocomposite was photosensitized with porphyrin as strong light harvesting agent. The obtained BVG photosensitized with porphyrin (BVG-P) could completely remove methyl orange dyer in 180 min. Slab-like morphology and the incorporation of porphyrin show to be key factors in high photocatalytic activity of BVG-P.

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“…With regard to the globally increasing energy consumption and decreasing energy resources, solar energy conversion and self‐assembled organic–inorganic hybrid structures have become important topics . By virtue of their nontoxicity and inexpensiveness, dye‐sensitized solar cells (DSSCs) are a leading example of the latter.…”

Section: Introductionmentioning

confidence: 99%

Porphyrins as Multifunctional Interconnects in Networks of ZnO Nanoparticles and their Application in Dye‐Sensitized Solar Cells

et al. 2017

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ZnO nanoparticles of 2.6 to 4.0 nm in size were interconnected by meso‐tetra(4‐carboxyphenyl)porphyrin (TCPP) for the realization of novel ZnO–TCPP networks, reaching lateral dimensions ranging from 50 to 800 nm. The resulting ZnO–TCPP networks were probed by dynamic light‐scattering experiments, transmission electron microscopy, and spectroscopy, and were also tested as photoactive top layers in TiO2 and ZnO dye‐sensitized solar cells (DSSCs). Control over these ZnO–TCPP networks on top of the semiconductor electrodes enables efficiency increases of 10 % and 46 % for TiO2‐ and ZnO‐based photoelectrodes, respectively. In other words, effects, such as reducing the electron recombination and increasing the electron lifetime, document the benefits of using tailored functional hybrid systems in DSSCs.

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ZnO nanorods assembled with different porphyrins – size-tunable hybrid particles

Abstract: We present a fundamental study on ZnO nanorod–porphyrin assembly formation in solution, providing the key to novel tunable hybrid assemblies with potential in solar energy conversion.

Cited by 15 publications

References 44 publications

Enhancing intergranular conductivity in polycrystalline semiconductor assembly via polythiophene use

Enhancing intergranular conductivity in polycrystalline semiconductor assembly via polythiophene use

Synthesis of pineapple slab like morphology of ternary BiVO4/graphene/porphyrin nanocomposite with enhanced visible light photocatalytic activity

Porphyrins as Multifunctional Interconnects in Networks of ZnO Nanoparticles and their Application in Dye‐Sensitized Solar Cells

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