Functionalization of A3B-type porphyrin with Fe3O4 MNPs. Supramolecular assemblies, gas sensor and catalytic applications

Mak, Carmen A.; Pericàs, Miquel À.; Fagadar‐Cosma, Eugenia

doi:10.1016/j.cattod.2017.01.014

Cited by 23 publications

(9 citation statements)

References 37 publications

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“…This geometric feature is due to J-type aggregates (edge-to-edge stacked) together with H-type sandwich organization, which forms multi-layers of highly oriented triangular bricks. This type of surface is also specific to porphyrins and their hybrids [38,39] as we previously specified. It becomes clear from AFM images that after triiodide ion detection, a different structured material was generated.…”

Section: Resultsmentioning

confidence: 99%

X-ray Structure Elucidation of a Pt-Metalloporphyrin and Its Application for Obtaining Sensitive AuNPs-Plasmonic Hybrids Capable of Detecting Triiodide Anions

Fagadar‐Cosma

Lascu

Shova³

et al. 2019

IJMS

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The development of UV–vis spectrophotometric methods based on metalloporphyrins for fast, highly sensitive and selective anion detection, which avoids several of the practical challenges associated with other detection methods, is of tremendous importance in analytical chemistry. In this study, we focused on achieving a selective optical sensor for triiodide ion detection in traces based on a novel hybrid material comprised of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) and gold nanoparticles (AuNPs). This sensor has high relevance in medical physiological tests. The structure of PtTMeOPP was investigated by single crystal X-ray diffraction in order to understand the metal surroundings and the molecule conformation and to assess if it qualifies as a potential sensitive material. It was proven that the Pt-porphyrin generated 1D H-bond supramolecular chains due to the weak C-H···O intermolecular hydrogen bonding. The presence of ordered voids in the crystal encouraged us to use PtTMeOPP as the sensing material for triiodide ion and to enhance its potential in a novel AuNPs/PtTMeOPP hybrid by the synergistic effects provided by the plasmonic gold nanoparticles. The spectrophotometric sensor is characterized by a detection limit of 1.5 × 10−9 M triiodide ion concentration and a remarkable confidence coefficient of 99.98%.

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Section: Resultsmentioning

confidence: 99%

X-ray Structure Elucidation of a Pt-Metalloporphyrin and Its Application for Obtaining Sensitive AuNPs-Plasmonic Hybrids Capable of Detecting Triiodide Anions

Fagadar‐Cosma

Lascu

Shova³

et al. 2019

IJMS

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“…In the second step, silica-coated Fe 3 O 4 nanoparticles were added to the previous mixture in order to promote the chemical grafting of GaPFC previously functionalized with APTES. magnetite-silica core/shell nanoparticles [25,26] or via carbodiimide activation [27,28]. These hybrids were evaluated as antibacterial agents [26,29], as photocatalysts [30], as magnetic heavy metal ions adsorbents [27], and as adsorbents for polycyclic aromatic hydrocarbons from water samples [31].…”

Section: Resultsmentioning

confidence: 99%

Magnetite–Corrole Hybrid Nanoparticles

2018

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This study describes the first example of a hybrid material comprising corroleand silica-coated magnetite nanoparticles. Firstly, cuboid and spheroid magnetite nanoparticles were prepared using a simple hydrothermal route, followed by a silica coating. The hybrid nanoparticles were obtained by promoting a covalent link between a gallium (III)(pyridine) complex of 5,10,15-tris(pentafluorophenyl)corrole (GaPFC) and the surface of magnetite-silica core/shell nanoparticles (Fe 3 O 4 @SiO 2 ), shaped both as cuboids and spheroids. The hybrids were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-Vis) and transmission electron microscopy (TEM). Preliminary studies on the capacity of singlet oxygen generation of the hybrid nanoparticles showed that these have lower efficiency values when compared to the pure corrole compound.

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“…A lot of attention is devoted to polyaniline (PANi), one of the most promising conducting polymers, candidate for application of gas and humidity sensing, due to its properties such as unique conductivity and chemical stability in the environment . However, the PANi is intractable, infusible, and insoluble, and these inconveniences hamper greatly the processing and applications of the polymer .…”

Section: Introductionmentioning

confidence: 99%

Self‐doped N‐propansulfonic acid polyaniline‐polyethylene terephthalate film used as active sensor element for humidity or gas detection

Solonaru¹,

Grigoraş²,

Petrila

et al. 2019

J of Applied Polymer Sci

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In this work, we report the fabrication of sensors’ element for humidity or gases, prepared by in situ polymerization of aniline N‐propansulfonic acid using ammonium persulfate in acidic medium. The polymer is being used in the form of powder or deposited in multiple layers onto the PET film. Various techniques including Fourier Transform infrared (FTIR), ultraviolet‐–visible spectroscopy (UV–vis), X‐ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to characterize the as‐prepared sensing materials. The film has been tested for humidity influence, where the significant variations in electrical characteristics were observed, suggesting its usefulness for humidity sensors. Also, for different organic and inorganic gases, a relatively low operating temperature and important sensitivity were observed that indicate its applicability as an active element for general gases sensors. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47743.

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Functionalization of A3B-type porphyrin with Fe3O4 MNPs. Supramolecular assemblies, gas sensor and catalytic applications

Cited by 23 publications

References 37 publications

X-ray Structure Elucidation of a Pt-Metalloporphyrin and Its Application for Obtaining Sensitive AuNPs-Plasmonic Hybrids Capable of Detecting Triiodide Anions

X-ray Structure Elucidation of a Pt-Metalloporphyrin and Its Application for Obtaining Sensitive AuNPs-Plasmonic Hybrids Capable of Detecting Triiodide Anions

Magnetite–Corrole Hybrid Nanoparticles

Self‐doped N‐propansulfonic acid polyaniline‐polyethylene terephthalate film used as active sensor element for humidity or gas detection

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