MAPLE deposition of Mn(III) metalloporphyrin thin films: Structural, topographical and electrochemical investigations

Cristescu, R.; Popescu, C.; Popescu, Andrei C.; Grigorescu, Sorin Dan; Mihailescu, I.N.; Ciucu, Anton Alexandru; Iordache, Stefan Marian; Andronie, A.; Stamatin, I.; Fagadar‐Cosma, Eugenia; Chrisey, Douglas B.

doi:10.1016/j.apsusc.2010.12.085

Cited by 19 publications

(13 citation statements)

References 40 publications

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“…Recently, we showed an increased electrocatalytic effect on the reduction of H 2 O 2 onto glassy carbon electrode, which was modified with ordered layers of AuNPs/Co(II) 5,10,15,20- meso -tetra(3-hydroxyphenyl)porphyrin [24]. Other metalloporphyrins, such as (5,10,15,20-tetraphenyl)porphinato manganese(III) chloride, were demonstrated to act as a single mediator for dopamine sensing in the specific case of gold screen-printed electrodes [27]. The gold hybrid of (5,10,15,20-tetratolyl)porphinato manganese(III) chloride was capable of electrochemically detecting ascorbic acid with excellent confidence [28] and optically detecting β-carotene [25].…”

Section: Introductionmentioning

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: Introductionmentioning

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 importance of the morphology and topography of the thin film was put into evidence in another experiment, based on the same Mn(III)-porphyrin, but realized by the MAPLE technique. In this case the thin film was sensitive to neurotransmitters [12].…”

Section: Introductionmentioning

confidence: 99%

A Sensitive A3B Porphyrin Nanomaterial for CO2 Detection

et al. 2014

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Abstract:The present report deals with the tailoring, preparation and characterization of novel nanomaterials sensitive to CO2 for use in detection of this gas during space habitation missions. A new nanostructured material based on mixed substituted asymmetrical A3B porphyrin: 5-(4-pyridyl)-10,15,20-tris(3,4-dimethoxyphenyl)-porphyrin (PyTDMeOPP) was synthesized and characterized by 1 H-NMR, FT-IR, UV-vis, fluorescence, MS, HPLC and AFM. Introducing one pyridyl substituent in the 5-meso-position of porphyrin macrocycle confers some degree of hydrophilicity, which may cause self-assembly properties and a better response to increased acidity. The influence of pH and nature of the OPEN ACCESSMolecules 2014, 19 21240 solvent upon H and J aggregates of the porphyrin are discussed. Porphyrin aggregation at the air-THF interface gave a triangular type morphology, randomly distributed but uniformly oriented. When deposition was made by multiple drop-casting operations, a network of triangles of uniform size was created and a porous structure was obtained, being reorganized finally in rings. When the deposition was made from CHCl3, ring structures ranging in internal diameter from 300 nm to 1 µm, but with the same width of the corona circular of approx. 200 nm were obtained. This porphyrin-based material, capable of generating ring aggregates in both THF and CHCl3, has been proven to be sensitive to CO2 detection. The dependence between the intensity of porphyrin UV-vis absorption and the concentration of CO2 has a good correlation of 98.4%.

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“…Herein the MnTPP moiety serves as a light-harvesting photosensitizer and GO in the composite acts as an excellent electron accepter and mediator to adjust electron transfer. More importantly, the manganese porphyrin with high oxidation potential can react with sacrificial reagents rapidly, thus, effectively enhancing electron-hole separation [33][34][35]. Under UV-vis light irradiation, the as-prepared GO-MnTPP demonstrated excellent stability and remarkable enhanced photocatalytic performance for water reduction to produce hydrogen.…”

Section: Introductionmentioning

confidence: 96%

“…GO displays D-band at 1342 cm -1 , due to edges, defects, and disordered carbon, and G-band at 1605 cm -1 , corresponding to the first-order scattering of E 2g phonons from sp 2 carbon atoms [44]. For the Raman spectrum of MnTPPCl, the band centered at 392 cm -1 is ascribed to the Mn-N vibration and the peaks in the region of 1000-450 cm -1 are relating to the rotations, wagging and out of plane vibrations of porphyrin structure [34]. D-and G-band of the GO-MnTPP sample, appearing at 1336 and 1589 cm -1 , red-shift ca.…”

Section: Structure and Morphologymentioning

confidence: 99%

One-pot synthesis of manganese porphyrin covalently functionalized graphene oxide for enhanced photocatalytic hydrogen evolution

Wang

et al. 2017

J. Porphyrins Phthalocyanines

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ABSTRACT:In this paper, graphene oxide (GO) sheets covalently functionalized with (5,10,15,20-tetraphenyl) porphinato manganese(III) (MnTPP) has been successfully synthesized and tested as a photocatalyst for hydrogen evolution from water under UV-vis light irradiation. The obtained sample was systematically characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis, Fourier transform infrared (FTIR), and Raman spectroscopy. The results show that the MnTPP moiety has been successfully grafted on the graphene oxide surface to form MnTPP modified GO (GO-MnTPP). The fluorescence quenching and photocurrent enhancement of GOMnTPP confirm that the rapid electrons transfer from photoexcited the MnTPP moiety to the GO sheets. The platinized GO-MnTPP exhibits enhanced photocatalytic activity for water reduction to produce hydrogen. Moreover, with the assistance of polyvinyl pyrrolidone (PVP), the photocatalytic activity is further improved because of aggregation prevention of the GO-MnTPP nanocomposite. This study provides a facile method to build porphyrin-graphene-based photocatalysts for solar energy conversion.

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MAPLE deposition of Mn(III) metalloporphyrin thin films: Structural, topographical and electrochemical investigations

Cited by 19 publications

References 40 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

A Sensitive A3B Porphyrin Nanomaterial for CO2 Detection

One-pot synthesis of manganese porphyrin covalently functionalized graphene oxide for enhanced photocatalytic hydrogen evolution

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