Photodynamic inactivation of mold fungi spores by newly developed charged corroles

Preuß, Annegret; Saltsman, Irena; Mahammed, Atif; Pfitzner, Michael; Goldberg, Israel; Gross, Zeev; Röder, Beate

doi:10.1016/j.jphotobiol.2014.02.013

Cited by 88 publications

(55 citation statements)

References 48 publications

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“…The simple and efficient procedure of corroles synthesis combined with readily tuned physical and chemical characteristics by varying the peripheral substituents, 3–6 central metal, 5,7 and axial ligands 8,9 has revived substantial interest in employing these contracted porphyrinoids in various fields. Examples for application of the corroles include dye-sensitized solar cells, 7,10 photodynamic therapy, 11–13 photodynamic detection, 14 photodynamic inactivation of mold fungi and green algae, 15,16 regular and sophisticated optical imaging, 17,18 formation of singlet oxygen for catalysis, 19–21 and corrole-based electron and energy transfer systems 22–24 . In this context, the ability to control the corrole's parameters such as fluorescence, 6,25 phosphorescence, 26–29 and singlet oxygen quantum yield, 30 energy, 31 and lifetime of their photoexcited states 26,32–34 is fundamental in optimizing the corrole based photocatalysts for their specific application 35 .…”

Section: Introductionmentioning

confidence: 99%

Ultrafast electronic and vibrational dynamics in brominated aluminum corroles: Energy relaxation and triplet formation

Stensitzki

Yang

Berg

et al. 2016

Structural Dynamics

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We combined femtosecond (fs) VIS pump–IR probe spectroscopy with fs VIS pump–supercontinuum probe spectroscopy to characterize the photoreaction of the hexacoordinated Al(tpfc-Br8)(py)2 in a comprehensive way. Upon fs excitation at ∼400 nm in the Soret band, the excitation energy relaxes with a time constant of (250 ± 80) fs to the S2 and S1 electronic excited states. This is evident from the rise time of the stimulated emission signal in the visible spectral range. On the same time scale, narrowing of broad infrared signals in the C=C stretching region around 1500 cm−1 is observed. Energy redistribution processes are visible in the vibrational and electronic dynamics with time constants between ∼2 ps and ∼20 ps. Triplet formation is detected with a time constant of (95 ± 3) ps. This is tracked by the complete loss of stimulated emission. Electronic transition of the emerging triplet absorption band overlaps considerably with the singlet excited state absorption. In contrast, two well separated vibrational marker bands for triplet formation were identified at 1477 cm−1 and at 1508 cm−1. These marker bands allow a precise identification of triplet dynamics in corrole systems.

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Section: Introductionmentioning

confidence: 99%

Ultrafast electronic and vibrational dynamics in brominated aluminum corroles: Energy relaxation and triplet formation

Stensitzki

Yang

Berg

et al. 2016

Structural Dynamics

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“…The most important parameter when evaluating the photodynamic activity of a photosensitizer is the singlet oxygen quantum yields F D À Á [44]. F D is the ratio of the number of 1 O 2 molecules procedure to the number of photons absorbed by photosensitizer.…”

Section: Singlet Oxygen ( 1 O 2 ) Quantum Yield and Photostability Ofmentioning

confidence: 99%

Synthesis, photophysical properties and spectroelectrochemical characterization of 10-(4-methyl-bipyridyl)-5,15-(pentafluorophenyl)corrole

Pivetta

Auras

Souza

et al. 2017

Journal of Photochemistry and Photobiology A: Chemistry

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“…Recent developments on chemical functionalization approaches of corroles have given new impetus to the application of these compounds in several areas [1][2][3][4][5][6]. For example, they are used in the therapeutic field as inactivation agents for bacteria, viruses, and fungi; contrast agents for biomedical imaging; photosensitizers for photodynamic therapy to fight cancer [7][8][9][10][11][12][13][14][15][16]; and also as catalysts [5] and sensors [4].…”

Section: Introductionmentioning

confidence: 99%

Magnetite–Corrole Hybrid Nanoparticles

2018

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This study describes the first example of a hybrid material comprising corroleand silica-coated magnetite nanoparticles. Firstly, cuboid and spheroid magnetite nanoparticles were prepared using a simple hydrothermal route, followed by a silica coating. The hybrid nanoparticles were obtained by promoting a covalent link between a gallium (III)(pyridine) complex of 5,10,15-tris(pentafluorophenyl)corrole (GaPFC) and the surface of magnetite-silica core/shell nanoparticles (Fe 3 O 4 @SiO 2 ), shaped both as cuboids and spheroids. The hybrids were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-Vis) and transmission electron microscopy (TEM). Preliminary studies on the capacity of singlet oxygen generation of the hybrid nanoparticles showed that these have lower efficiency values when compared to the pure corrole compound.

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Photodynamic inactivation of mold fungi spores by newly developed charged corroles

Cited by 88 publications

References 48 publications

Ultrafast electronic and vibrational dynamics in brominated aluminum corroles: Energy relaxation and triplet formation

Ultrafast electronic and vibrational dynamics in brominated aluminum corroles: Energy relaxation and triplet formation

Synthesis, photophysical properties and spectroelectrochemical characterization of 10-(4-methyl-bipyridyl)-5,15-(pentafluorophenyl)corrole

Magnetite–Corrole Hybrid Nanoparticles

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