J-aggregation of a sulfonated amphiphilic porphyrin at the air–water interface as a function of pH

Miguel, Gustavo de; Hosomizu, Kohei; Umeyama, Tomokazu; Matano, Yoshihiro; Imahori, Hiroshi; Pérez-Morales, Marta; Martín‐Romero, María T.; Camacho, Luis

doi:10.1016/j.jcis.2011.01.066

Cited by 20 publications

(15 citation statements)

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“…Thus, the Cu[(ms-Ph) 3 Cor], as well as the ligand, in the film forms aggregates with strong intermolecular interactions. [63,70,71] In order to study the catalytic activity of copper triphenylcorrole LS films and its ligand in the ORR, 15 layers of H 3 [(ms-Ph) 3 Cor] were transferred (isotherm 1, point A, the state of the layer "bilayer-tetralayer", sample 2) and Cu[(ms-Ph) 3 Cor] (isotherm 2, point B, the state of the layer edge-on "tetralayer", sample 3, Figure 7) on the surface of carbon-graphite electrodes through a thin layer of TEC-based composite material. For a comparative analysis of the electrocatalytic activity of the LS films, I,Ecurves, corresponding to the saturation of the electrolyte with oxygen (40 minutes), were obtained.…”

Section: Resultsmentioning

confidence: 99%

An Influence of Copper Cation in the Complex on Structure of the Nanostructured Layers, Spectral and Electrocatalytic Characteristics of Langmuir-Schaeffer Films of Triphenylcorrole

Berezina¹,

Vu²,

Kharitonova³

et al. 2019

MHC

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An influence of copper cation in the complex on structure and properties of the floating layers of 5,10,15-triphenylcorrole (Cu[(ms-Ph) 3 Cor]) at the air-water interface was studied. The structure of the layers has been determined using the method of quantitative analysis of compression isotherms. A model of stable nanostructured layers of the substance has been constructed. Copper cation in the macrocycle increases the density of two-dimensional M-nanoaggregates, while the number of molecules in such aggregates experiences 2-3-fold growth. Like the metal-free triphenylcorrole, this copper-containing compound in multilayer Langmuir-Schaeffer (LS) films with edge-on arrangement of molecules forms aggregates with strong intermolecular interactions. Such LS films may be suitable for electrocatalysis in the oxygen reduction reaction.

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Section: Resultsmentioning

confidence: 99%

An Influence of Copper Cation in the Complex on Structure of the Nanostructured Layers, Spectral and Electrocatalytic Characteristics of Langmuir-Schaeffer Films of Triphenylcorrole

Berezina¹,

Vu²,

Kharitonova³

et al. 2019

MHC

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“…The decrease in the number of Q bands in the UV‐visible spectra can be explained by the increase of the symmetry of the diprotonated porphyrin …”

Section: Resultsmentioning

confidence: 99%

Hybrids formed between polyvinylpyrrolidone and an A₃B porphyrin dye: behaviour in aqueous solutions and chemical response to CO₂ presence

Fagadar‐Cosma

Тарабукина

Захарова

et al. 2015

Polymer International

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This study reports the incorporation of an A 3 B mixed functionalized porphyrin, namely 5-(4-pyridyl)-10,15,20-tris(4-phenoxyphenyl)porphyrin (PyTPOPP), into polyvinylpyrrolidone (PVP), a biocompatible polymer, with the purpose of preparing water-soluble polymer-dye (PVP-PyTPOPP) hybrids. The hybrids were obtained in two variants, differing by molar ratios, and their molecular characteristics and aggregation in dilute aqueous solutions were investigated using static and dynamic light scattering and analytical ultracentrifugation methods. The hybrids were characterized using 1 H NMR, UV-visible and Fourier transform infrared spectroscopies, atomic force microscopy (AFM) and transmission electron microscopy (TEM). A study of the influence of acidic media on the electronic spectra was carried out, evidencing the similar behaviour of the hybrids and the bare porphyrin. The interaction between CO 2 and the PVP-PyTPOPP hybrids was studied using UV-visible spectroscopy and a continuous hypochromic response of the Soret band in direct relationship with increased CO 2 concentration was noticed. Based on the UV-visible spectral differences between the PVP-PyTPOPP hybrids in acidic media and during CO 2 exposure, we can presume that the mechanism of CO 2 detection is not based on pH changes of the solution but on chemisorption phenomena which modify the surface properties as confirmed by TEM and AFM. These porphyrin-PVP hybrid nanomaterials offer the possibility for achieving optical and colorimetric sensors for monitoring CO 2 and are also promising for biomedical applications.

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“…According to investigations of porphyrin LB and LS films, the sensing porphyrin monolayers are usually formed by molecules self-assembled through strong p-p stacking. The supramolecular interactions influence the absorption and emission properties of porphyrin molecules and their ability to bind the target analyte [14,[90][91][92]. To circumvent these problems, it would be useful to prepare porphyrin derivatives that are amenable to the formation of ordered films yet isolate the chromophore molecules minimizing the electronic interactions of adjacent molecules.…”

Section: Introductionmentioning

confidence: 99%

“…1) [93]. These compounds being amphiphilic may allow for the formation of the Langmuir monolayers at air-water interfaces [64,69,75,91].…”

Section: Introductionmentioning

confidence: 99%

Ultra-thin film sensors based on porphyrin-5-ylphosphonate diesters for selective and sensitive dual-channel optical detection of mercury(II) ions

et al. 2021

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J-aggregation of a sulfonated amphiphilic porphyrin at the air–water interface as a function of pH

Cited by 20 publications

References 64 publications

An Influence of Copper Cation in the Complex on Structure of the Nanostructured Layers, Spectral and Electrocatalytic Characteristics of Langmuir-Schaeffer Films of Triphenylcorrole

An Influence of Copper Cation in the Complex on Structure of the Nanostructured Layers, Spectral and Electrocatalytic Characteristics of Langmuir-Schaeffer Films of Triphenylcorrole

Hybrids formed between polyvinylpyrrolidone and an A₃B porphyrin dye: behaviour in aqueous solutions and chemical response to CO₂ presence

Ultra-thin film sensors based on porphyrin-5-ylphosphonate diesters for selective and sensitive dual-channel optical detection of mercury(II) ions

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J-aggregation of a sulfonated amphiphilic porphyrin at the air–water interface as a function of pH

Cited by 20 publications

References 64 publications

An Influence of Copper Cation in the Complex on Structure of the Nanostructured Layers, Spectral and Electrocatalytic Characteristics of Langmuir-Schaeffer Films of Triphenylcorrole

An Influence of Copper Cation in the Complex on Structure of the Nanostructured Layers, Spectral and Electrocatalytic Characteristics of Langmuir-Schaeffer Films of Triphenylcorrole

Hybrids formed between polyvinylpyrrolidone and an A3B porphyrin dye: behaviour in aqueous solutions and chemical response to CO2 presence

Ultra-thin film sensors based on porphyrin-5-ylphosphonate diesters for selective and sensitive dual-channel optical detection of mercury(II) ions

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Hybrids formed between polyvinylpyrrolidone and an A₃B porphyrin dye: behaviour in aqueous solutions and chemical response to CO₂ presence