Synthesis and characterization of a perylene derivative and its application as catalyst for ethanol electro-oxidation

Maia, Paulo José Sousa; Barbosa, Elizomar Medeiros; Vega, Maria Letícia; Cunha, Helenilza Ferreira Albuquerque; Souza, Elson Almeida de; Freitas, Flávio A. de

doi:10.1007/s11696-017-0344-z

Cited by 16 publications

(11 citation statements)

References 47 publications

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“…3. Using the data from the voltammetric curves, we identified the redox pairs at À0.25/-0.04 V, (E 1 / 2 = À0.15 V) and À0.65/-0.39 V (E 1 / 2 = À0.52 V) vs Ag +/AgCl, which were assigned to the anionic (pPDI/pPDI À ) and dianion radicals (pPDI À /pPDI À2 ) moieties of the cis-[Ru(phen)2 (pPDI)] 2+ respectively, as reported for other perylene derivatives [20,22,40,41]. The electrochemical reductive process at À1.07 V and À1.22/-1.07 V (E 1 / 2 = À1.15 V) were assigned to the phenanthroline ligand coordinated to the metal center Ru(II).…”

Section: Cyclic Voltametrysupporting

confidence: 63%

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Singlet oxygen production by a polypyridine ruthenium (II) complex with a perylene monoimide derivative: A strategy for photodynamic inactivation of Candida albicans

Maia

Aguiar

Velloso

et al. 2018

Journal of Photochemistry and Photobiology A: Chemistry

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We report the synthesis, optical, electrochemical and electronic properties of a new perylene derivative and its Ru(II) complex, namely N,-(5-amino-1,10-phenantroline)perylene-3,4,9,10-tetracarboximonoimide (pPDI) and Bis(1,10-phenanthroline)(N-(5-amin-1,10-phenantroline)perylene-3,4,9,10-tetracarboxi monoimide)ruthenium(II) hexafluorophosphate, [Ru(phen) 2 (pPDI)] 2+ ([PF 6 ] À) 2. The molecular structures of the compounds were elucidated by FTIR, mass spectrometry, elemental analysis (CHN) and DFT calculations. Their optical and electrochemical properties were investigated by absorption and fluorescence spectroscopy and cyclic voltammetry. The spectroscopic and electrochemical studies for both the pPDI and the perylene monoimide metal complex show that Ru 2+ coordination does not affect the optical and electrochemical properties of the free perylene bisimide ligand. The Ru complex exhibits emission lifetimes of 5.06 ns (48.1%) and 156 ns (51.9%), resulting from emission of the pPDI ligand and 3 MLCT, respectively. The pPDI triplet excited state in the title chromophore is able to sensitize the production of singlet oxygen (1 O 2). Using a time-resolved laser system, we measured the quantum yield for the production of singlet oxygen (FD) to be 0.26 for cis-[Ru(phen) 2 (pPDI)] 2+. Candida albicans is recognized as the most common fungal pathogens, causing superficial infections of the skin and mucous membranes. Resistance of C. albicans strains against classical antifungal agents such as fluconazole has increased considerably, which drives the search for new therapeutic alternatives. In the present study, we report that our new Ru-perylene complex can indeed be used to kill the bacterium C. albicans. The fungicidal activity of cis-[Ru(phen) 2 (pPDI)] 2+ against C. albicans was evaluated in the presence of C. albicans cultures in the dark and in the presence of light. After exposure to 12.5 mM of cis-[Ru (phen) 2 (pPDI)] 2 in the presence of light for 180 s, C. albicans showed a decrease of 50% in its concentration compared to the same experimental conditions in the dark.

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Section: Cyclic Voltametrysupporting

confidence: 63%

“…The ligands containing the perylene moiety are reddish dyes with very high quantum yields of luminescence. However, an undesired property of perylene complexes is the formation of molecular aggregates, which is facilitated by the flatness of the perylene molecules [19,20].…”

Section: Omentioning

confidence: 99%

Singlet oxygen production by a polypyridine ruthenium (II) complex with a perylene monoimide derivative: A strategy for photodynamic inactivation of Candida albicans

Maia

Aguiar

Velloso

et al. 2018

Journal of Photochemistry and Photobiology A: Chemistry

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“…Additionally, the pollution created by fuel cells is almost nonexistent [18], and the carbonic emissions per unit of energy produced are decreased using renewable fuels. Fuel cells are split into four types [20]: Alkaline FC (AFC) [21], Molten carbonate FC (MCFC) [22], Proton electrolyte membrane FC (PEMFC) [23], Direct Methanol FC (DMFC) [24], Solid oxide FC (SOFC) [21], and Phosphoric acid FC (PAFC) [25]. The mathematical modeling of fuel cells is one of the most significant problems associated with their technological development.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review and Application of Metaheuristics in Solving the Optimal Parameter Identification Problems

et al. 2023

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For many electrical systems, such as renewable energy sources, their internal parameters are exposed to degradation due to the operating conditions. Since the model’s accuracy is required for establishing proper control and management plans, identifying their parameters is a critical and prominent task. Various techniques have been developed to identify these parameters. However, metaheuristic algorithms have received much attention for their use in tackling a wide range of optimization issues relating to parameter extraction. This work provides an exhaustive literature review on solving parameter extraction utilizing recently developed metaheuristic algorithms. This paper includes newly published articles in each studied context and its discussion. It aims to approve the applicability of these algorithms and make understanding their deployment easier. However, there are not any exact optimization algorithms that can offer a satisfactory performance to all optimization issues, especially for problems that have large search space dimensions. As a result, metaheuristic algorithms capable of searching very large spaces of possible solutions have been thoroughly investigated in the literature review. Furthermore, depending on their behavior, metaheuristic algorithms have been divided into four types. These types and their details are included in this paper. Then, the basics of the identification process are presented and discussed. Fuel cells, electrochemical batteries, and photovoltaic panel parameters identification are investigated and analyzed.

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“…4,11 A otimização adicional foi alcançada a partir da formação de ligas bimetálicas e trimetálicas como PtCr/C e PtCo/C (redução de oxigênio), PtRu/C (oxidação de metanol), PtPd/C (oxidação de ácido fórmico) e PtSn/C (oxidação de etanol). 4, [12][13][14] Nesses sistemas, o aprimoramento da atividade catalítica de Pt foi entendido em termos de mudanças na natureza eletrônica e na morfologia da superfície de Pt e interações mútuas entre os metais constituintes nas ligas.…”

Section: Introductionunclassified

“…Por fim, os grupos fenantrolina ou piridínicos ancorados a molécula de perileno, podem fornecer locais de ligação para catalisadores baseados em metais de transição multieletrônicos para eletro-oxidação de álcool. 20,21 Recentemente, Barbosa et al 13 mostrou o desempenho eletrocatalítico de um PDI formado a partir da funcionalização de PTCDA com 4-aminopiridina (PDI1) e, disperso em Pt/C (Pt/C:PDI1) e PtSn/C (PtSn/C:PDI1). A varredura da reação de oxidação direta indicou que as densidades de corrente de pico (j) nos catalisadores Pt/C/PDI1 e PtSn/C/PDI1 foram ca.…”

Section: Introductionunclassified

Perylene Derivative Complexes as Cocatalyst for Electrocatalytic Oxidation of Ethanol

Barbosa¹,

Costa²,

Oliveira³

et al. 2020

Rev. Virtual Quim.

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Direct Alcohol Fuel Cells (DAFCs) are advantageous energy sources for mobile and portable applications because ethanol can be produced from biomass on a large scale and is less toxic than methanol. However, even when metallic Pt is used as catalyst, the complete oxidation of ethanol to CO 2 and H 2 O is not without problems, which calls for the search for more efficient, selective, and low-cost catalysts. This study employed cyclic voltammetry and chronoamperometry techniques to assess the performance of [Ru(phen) 2 (pPDI)](PF 6) 2 , namely bis(1,10-phenanthroline)(N-(5-amin-1,10-phenanthroline) perylene-3,4,9,10 tetracarboximonoimide)ruthenium(II) hexafluorphosphate, as co-catalyst in the electrocatalytic oxidation of ethanol. To this end, the compound mentioned above containing metal ion Ru(II) and perylene-based ligand was used in the oxidation of ethanol in the presence of Pt/C (Pt/C:RupPDI) and PtSn/C (PtSn/C:RupPDI), thereby obtaining catalysts with different metal/complex mass ratios. The results of cyclic voltammetry and chronoamperometry indicate that in spite of the coordination compound RupPDI does not exhibit good catalytic efficiency by itself, it does so when associated with nanoparticulate metal catalysts; that is, the use of PtSn/C:RupPDI (3:1) as a catalyst resulted in higher peak current density. As células diretas de combustível com álcool (DAFCs) são fontes de energia vantajosas para aplicações em dispositivos móveis e portáteis. Dentre as possibilidades de combustíveis aplicados, o etanol oferece uma alternativa atraente porque pode ser produzido a partir de biomassa em larga escala e é menos tóxico que o metanol. No entanto, mesmo quando o Pt metálico é usado como catalisador, a oxidação completa do etanol em CO 2 e H 2 O apresenta problemas, o que exige a busca de catalisadores mais eficientes, seletivos e de baixo custo. Este estudo empregou técnicas de voltametria cíclica e cronoamperometria para avaliar o desempenho do complexo [Ru(phen) 2 (pPDI)](PF 6) 2 , chamado de hexafluorfosfato de bis(1,10-fenantrolina) (N-(5-amin-1,10-fenantrolina)perileno-3,4,9,10-tetracarboximonoimida)rutênio(II), como cocatalisador na oxidação eletrocatalítica do etanol. Portanto o composto citado acima, contendo íon metálico Ru(II) e ligante à base de perileno foi utilizado na oxidação do etanol na presença de Pt/C (Pt/C:RupPDI) e PtSn/C (PtSn/C:RupPDI), obtendo-se assim catalisadores com diferentes razões mássicas metal/Complexo. Os resultados de voltametria cíclica e cronoamperometria indicam que, apesar do composto de coordenação RupPDI não exibir boa eficiência catalítica por si só, ele o faz quando associado a catalisadores metálicos nanoparticulado. Isso ficou evidente quando usamos PtSn/C:RupPDI (3:1) como catalisador, resultando em maior densidade de corrente ao longo do experimento.

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Synthesis and characterization of a perylene derivative and its application as catalyst for ethanol electro-oxidation

Cited by 16 publications

References 47 publications

Singlet oxygen production by a polypyridine ruthenium (II) complex with a perylene monoimide derivative: A strategy for photodynamic inactivation of Candida albicans

Singlet oxygen production by a polypyridine ruthenium (II) complex with a perylene monoimide derivative: A strategy for photodynamic inactivation of Candida albicans

A Comprehensive Review and Application of Metaheuristics in Solving the Optimal Parameter Identification Problems

Perylene Derivative Complexes as Cocatalyst for Electrocatalytic Oxidation of Ethanol

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