Fluorescence quenching and spectrophotometric methods for the determination of daunorubicin with meso-tera (4-sulphophenyl) porphyrin as probe

Tian, Jing; Liu, Shaopu; Liu, Zhongfang; Yang, Jinlong; Zhu, Jinghui; Qiao, Man; Hu, Xiaoli

doi:10.1016/j.saa.2013.10.014

Cited by 15 publications

(8 citation statements)

References 21 publications

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“…Fluorescence quenching of TPPS analogues, on the other hand, is well known . For example, Goncalves et al saw that the interaction of Zn‐TPPS with micelles facilitates aggregation of Zn‐TPPS which leads to fluorescence quenching.…”

Section: Resultsmentioning

confidence: 99%

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

Frühbeißer

Werner

Gröhn

2017

J Polym Sci B Polym Phys

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This study investigates the influence of different metal centers in porphyrins and of different polyelectrolyte architectures on the formation of supramolecular metalloporphyrin-polyelectrolyte assemblies in aqueous solution via electrostatic self-assembly. Metal-analogues of the tetravalent anionic meso-tetrakis(4-sulfonatophenyl)-porphyrin (with Zn 21 , Co 21 , Ni 21 , Mn 31 , and Fe 31 ) are combined with the cationic dendrimer of generation 4 or with the linear polydiallyldimethylammoniumchloride. Dynamic light scattering and atomic force microscopy reveal that the different molecular geometries of the metalloporphyrins resulting from axial ligands determine the size and the stability of the aggregates. A thermodynamic study elucidates the importance of the polymer architecture in controlling the size of the assembly and the role of the metal center.

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Section: Resultsmentioning

confidence: 99%

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

Frühbeißer

Werner

Gröhn

2017

J Polym Sci B Polym Phys

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“…In a recent report we showed, by surface photovoltage spectroscopy (SPV), the generation of photoinduced charge separation states and charge migration in ITO/porphyrin polymer photoelectrodes. Several studies on the development of organic optoelectronic devices incorporate porphyrins and related metallized and unmetallized tetrapyrrolic compounds, because of their spectral, magnetic, and electronic properties. − Electropolymerization is a relevant alternative technique to produce organic–organic heterojunctions because it is a practical method that allows the synthesis of subsequent conducting films. − In our case the films over ITO substrate were produced by electrochemical polymerization of functionalized porphyrin monomers, with and without central metal. , Both modulated SPV and laser-induced transient photovoltage experiments demonstrated that the photogenerated electrons preferentially traveled in opposite directions, depending on the porphyrin formulation . For the polymer built with free base porphyrin, the electrons were separated toward the internal ITO/polymer interface, and for the Zn(II)-porphyrin polymer, the electrons were separated toward the external surface.…”

Section: Introductionmentioning

confidence: 96%

Photoinduced Charge Separation in Organic–Organic Heterojunctions Based on Porphyrin Electropolymers. Spectral and Time Dependent Surface Photovoltage Study.

et al. 2015

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Photoactive heterojunctions formed by porphyrin polymers were electrochemically generated and analyzed by both transient and spectral dependent surface photovoltage. Indium tin oxide/organic polymer heterojunction photovoltages showed to be dependent on the presence of Zn (II) as central metal on the porphyrin polymer structure. The porphyrin electropolymers were also successfully formed on the top of a poly 3,4-ethylenedioxythiophene layer, generated by electropolymerization. The presence of the hole transport polymer dramatically altered the formation and diffusion process of the photocarriers created by excitation of the porphyrin films. A marked increase in the generated photovoltages was observed when the porphyrin electropolymer external surfaces were modified with a layer of a strong electron acceptor (C 60 buckminsterfullerene), showing that these heterojunctions could be used in the development of new solar energy technologies.

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“…In fact, the field of porphyrin synthesis evolved in such a way that almost any type of derivative can be prepared, for example, allowing the realization of complex porphyrin supramolecular structures and materials with interesting catalytic, photochemical, photophysical, and electrochemical properties, exploiting the different substituent groups attached to the periphery of the porphyrin ring as well as the contrasting electrocatalytic and photochemical properties imparted by the metal ions coordinated to the center of the macrocycle compounds. In fact, those supramolecular materials can be tailored with suitable properties, aiming application in sensors, electronic devices, catalysis, photocatalysis, and also in medicine [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Porphyrin Derivative Nanoformulations for Therapy and Antiparasitic Agents

et al. 2020

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Porphyrins and analogous macrocycles exhibit interesting photochemical, catalytic, and luminescence properties demonstrating high potential in the treatment of several diseases. Among them can be highlighted the possibility of application in photodynamic therapy and antimicrobial/antiparasitic PDT, for example, of malaria parasite. However, the low efficiency generally associated with their low solubility in water and bioavailability have precluded biomedical applications. Nanotechnology can provide efficient strategies to enhance bioavailability and incorporate targeted delivery properties to conventional pharmaceuticals, enhancing the effectiveness and reducing the toxicity, thus improving the adhesion to the treatment. In this way, those limitations can be overcome by using two main strategies: (1) Incorporation of hydrophilic substituents into the macrocycle ring while controlling the interaction with biological systems and (2) by including them in nanocarriers and delivery nanosystems. This review will focus on antiparasitic drugs based on porphyrin derivatives developed according to these two strategies, considering their vast and increasing applications befitting the multiple roles of these compounds in nature.

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Fluorescence quenching and spectrophotometric methods for the determination of daunorubicin with meso-tera (4-sulphophenyl) porphyrin as probe

Cited by 15 publications

References 21 publications

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

Metalloporphyrin–polyelectrolyte assemblies in aqueous solution: Influence of the metal center and the polyelectrolyte architecture

Photoinduced Charge Separation in Organic–Organic Heterojunctions Based on Porphyrin Electropolymers. Spectral and Time Dependent Surface Photovoltage Study.

Porphyrin Derivative Nanoformulations for Therapy and Antiparasitic Agents

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