Synthesis of new binary porphyrin–cyanine conjugates and their self-aggregation in organic-aqueous media

Zhdanova, Kseniya A.; Ezhov, Artem V.; Брагина, Н. А.; Миронов, А. Ф.

doi:10.1016/j.mencom.2018.11.021

Cited by 5 publications

(1 citation statement)

References 30 publications

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“…Figure 2b shows the intensity weighted particle size distribution for TPPFe, the figure shows only one signal indicating TPPFe is formed by one particle type with an average size distribution of around 2500 nm. Figure 2 did not show additional signals suggesting that porphyrin aggregation was not present inside suspension under experimental conditions [37][38][39]. assigned to Soret band, and bands located between 516 nm and 650 nm corresponding to Q bands, these signals are associated to a2u(π)-eg * (π) electronic excitations.…”

Section: Sem Characterizationmentioning

confidence: 93%

Physical-Chemical Study of Anthracene Selective Oxidation by a Fe(III)-Phenylporhyrin Derivative

Díaz‐Uribe

Vallejo

Quiñones

2020

IJMS

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In this work, we studied the anthracene oxidation by hydroxyl radicals. Hydroxyl radical was generated by reaction of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin Fe (III) (TPPFe) with hydrogen peroxide under visible radiation at a nitrogen atmosphere. The TPPFe was synthesized by Adler Method followed by metal complexation with Fe (III) chloride hexahydrate. Hydroxyl radical was detected by fluorescence emission spectroscopy and we studied kinetic of anthracene selective oxidation by hydroxyl radicals through the differential method. The TPPFe was characterized by UV-Vis spectrophotometry, Dynamic Light Scattering (DLS) and Scanning Electron Microscopy (SEM) measurements. The results indicated that TPPFE was compound by micro-particles with a size distribution of around 2500 nm. Kinetic results showed that the apparent rate constant for the oxidation of anthracene increased exponentially on as temperature increases, furthermore, the activation energy for the Anthracene oxidation by hydroxyl radicals under visible irradiation was 51.3 kJ/mol. Finally, anthraquinone was the main byproduct generated after oxidation of anthracene by TPP-Fe under visible irradiation.

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Section: Sem Characterizationmentioning

confidence: 93%