Oxygen storage/release in cobalt porphyrin electrodeposited films

Pérez-Morales, Marta; Miguel, Gustavo de; Muñoz, Eulogia; Martín‐Romero, María T.; Camacho, Luis

doi:10.1016/j.electacta.2008.09.070

Cited by 9 publications

(7 citation statements)

References 43 publications

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“…The thin films are attractive as a reference point for the construction of complex molecular architectures 4,9,10 and because they are explicitly required for some applications, e.g., chemically modified thin-film electrodes. 11 Recent studies have been dedicated to the magnetic properties of ordered thin films of metallorganic magnetic molecules, e.g., Mn-TPPCl 12 and Fe-OEPCl 13 porphyrins adsorbed on ferromagnetic transition metal substrates, which are potentially interesting in the fields of data storage and spintronics. Herein, we choose the octaethyl-porphyrins with the magnetic Co metal as the central atom, to investigate the possible realization of a longrange ordered 2D array of magnetic elements, by exploiting the self-organizing properties of porphyrins on Ag(110), a noncovalently interactive and nonmagnetic substrate.…”

Section: ' Introductionmentioning

confidence: 99%

“…Moreover, the interaction with the substrate can further modify the molecular properties and the chemical behavior of porphyrins, leading to new functionalities. The thin films are attractive as a reference point for the construction of complex molecular architectures ,, and because they are explicitly required for some applications, e.g., chemically modified thin-film electrodes …”

Section: Introductionmentioning

confidence: 99%

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Structure and Molecule–Substrate Interaction in a Co-octaethyl Porphyrin Monolayer on the Ag(110) Surface

et al. 2011

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We present a combined experimental and theoretical study of the ultrathin film of Co-octaethylporphyrin (Co-OEP) molecules deposited on the Ag(110) surface. The morphological and electronic properties of this heterogeneous metallorganic interface were studied by means of scanning tunneling microscopy (STM), near-edge X-ray adsorption fine structure (NEXAFS) spectroscopy, ultraviolet photoemission spectroscopy (UPS), and density functional theory calculations (DFT). The long-range self-ordered single layer of Co-OEP was obtained by thermal desorption of the molecular multilayer. The single-layer molecules were arranged in a noncommensurate rectangular lattice aligned with the substrate high-symmetry directions. The combination of experimental techniques and numerical simulations indicated that in this configuration each molecular macrocycle is tilted with respect to the metal surface of about 15°. The strong molecular interaction with the substrate leads to the electron transfer from the metal substrate to the molecule. The direct interaction with the substrate involves mostly the Co metal center, which modifies the valence state with respect to the free Co-OEP molecules due to the hybridization between Co states and Ag bands.

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Section: ' Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structure and Molecule–Substrate Interaction in a Co-octaethyl Porphyrin Monolayer on the Ag(110) Surface

et al. 2011

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“…6 Often, porphyrins are first metalated and then polymerized in the generation of metalloporphyrin electropolymers and other thin films. [18][19][20][21] In order to streamline the fabrication of a variety of metalloporphyrin films without modifying the electropolymerization scheme to account for variations in monomer solubility and redox potentials upon metalation, free base films were formed and then postsynthetically metalated as described previously. 6 Spectra taken after metalation indicate the coalescence of the four Q-bands to two, indicating successful metalation, Figure 3.…”

Section: Resultsmentioning

confidence: 99%

Chlorocarbon and Alcohol Vapor Discrimination by Electropolymerized Ultrathin Chromophore Films

Gunsch

Paske

Leamy

et al. 2012

J. Electrochem. Soc.

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Metalloporphyrin containing thin film colorimetric sensors for volatile organic compounds (VOCs) have been synthesized and characterized. Electropolymerization has been employed to synthesize robust poly-tetrakis(4-aminophenyl)porphyrin films supported on indium tin oxide (ITO) electrodes. This fabrication method afforded fine control over film thickness, yielding rapid and reproducible responses to analytes. Several metalloporphyrins were studied for their sensory response based upon the affinity of particular transition metals for organic analytes. The sensors are capable of distinguishing between several alcohol and chlorocarbon vapors at a high level of statistical significance due to a modulation of film visible absorbance upon exposure to VOC vapors.

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“…It is common in the synthesis of metalloporphyrin electropolymers for the porphyrins to be metalated and then polymerized (17)(18)(19)(20). In order to streamline the fabrication of films containing a variety of metals without modifying the electropolymerization scheme to account for variations in metalloporphyrin monomer solubility, free base films were formed and then post-synthetically metalated as described previously for interfacially polymerized films (7).…”

Section: Film Fabrication and Metalationmentioning

confidence: 99%

Electropolymerized Ultrathin Chromophore Films for VOC Sensing

2011

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Porphyrin-containing thin film colorimetric sensors for volatile organic compounds (VOCs) have been synthesized and characterized. Electropolymerization has been employed to synthesize robust poly-tetrakis(4-aminophenyl)porphyrin films. Production of films by this method allows for fine control over thickness allowing for rapid responses to analytes. While many techniques used to produce thin films rely on electrostatics, these films are covalently linked, yielding excellent structural integrity upon repeated exposure to organic solvents. Several transition metals have been inserted into the porphyrin films to modulate the sensory response based upon the affinity of particular transition metals to organic analytes.

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Oxygen storage/release in cobalt porphyrin electrodeposited films

Cited by 9 publications

References 43 publications

Structure and Molecule–Substrate Interaction in a Co-octaethyl Porphyrin Monolayer on the Ag(110) Surface

Structure and Molecule–Substrate Interaction in a Co-octaethyl Porphyrin Monolayer on the Ag(110) Surface

Chlorocarbon and Alcohol Vapor Discrimination by Electropolymerized Ultrathin Chromophore Films

Electropolymerized Ultrathin Chromophore Films for VOC Sensing

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