Association behavior of protoporphyrin IX in water and aqueous poly(N-vinylpyrrolidone) solutions. Interaction between protoporphyrin IX and poly(N-vinylpyrrolidone)
Isamu Inamura,Kazutomo Uchida +1 more
TLDR
The association behavior of protoporphyrin IX was investigated at different pH by absorption spectroscopy and gel chromatography as mentioned in this paper, and it was shown that poly(n-vinylpyrrolidone) tended to suppress dimerization and aggregation of the protein.Abstract:
The association behavior of protoporphyrin IX was investigated at different pH by absorption spectroscopy and gel chromatography. Protoporphyrin IX existed as monomer in acidic water, as aggregate in neutral water, and as dimer in basic water. Poly(N-vinylpyrrolidone) tended to suppress dimerization and aggregation of protopophyrin IX.read more
Citations
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Aggregation Behavior of Protoporphyrin IX in Aqueous Solutions: Clear Evidence of Vesicle Formation
Luigi Monsù Scolaro,Mariangela Castriciano,Andrea Romeo,Salvatore Patanè,Eugenio Cefalì,‡,§ and,Maria Allegrini +5 more
TL;DR: The aggregation behavior of porphyrin IX in aqueous solution, as a function of pH and ionic strength, has been studied by means of UV/vis, fluorescence emission spectroscopy, and resonant light scattering (RLS) techniques as discussed by the authors.
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Recognition of sugars and related compounds by “reading-out”-type interfaces
TL;DR: The vast number and diversity of saccharides in nature are the ultimate challenge for the "Host-Guess" Chemist as mentioned in this paper, and two areas in particular have stimulated their interest:
Journal ArticleDOI
Photophysical and photochemical properties of porphyrin aggregates
Ulrich Siggel,Uwe Bindig,Claus Endisch,Teruyuki Komatsu,Eishun Tsuchida,J. Voigt,Jürgen-Hinrich Fuhrhop +6 more
TL;DR: In aqueous media, substituted protoporphyrins and amphiphilic tetraphenylporphyrins aggregate to fibers, tubules, helical ribbons and sheets as discussed by the authors.
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Sugar sensing utilizing aggregation properties of a boronic-acid-appended porphyrin
TL;DR: In this article, it was shown that monosaccharides can be sensitively detected utilizing aggregation properties of a boronic-acid-appended porphyrin, and the origin of the spectral change is related to the increase in the hydrophilicity in the sugar binding site.
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Protoporphyrin IX-loaded magnetoliposomes as a potential drug delivery system for photodynamic therapy: Fabrication, characterization and in vitro study
TL;DR: The results of this study demonstrated the effective application of Ppix-loaded MLs for in vitro photodynamic therapy at nanomolar concentrations and indicated that an LED light source provided sufficient energy to stimulate the PpIX molecules.
References
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Ligand‐binding in porphyrin systems*
W. A. Gallagher,W. B. Elliott +1 more
TL;DR: A careful analysis of the titration of heme with pyridine was made both in regard to the stoichiometry of the reaction and in regards to parameters responsible for changes in the absorption spectrum of pyrsidine hemochromogen.
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Acid—base properties of protoporphyrin IX; its dimethyl ester and heme solubilized on surfactant micelles: spectrophotometric and fluorometric titration
TL;DR: A considerable decrease in the critical micelle concentration of surfactants in the presence of protoporphyrins has been observed and it has been suggested that the porphyrin macrocycle is located in the micelle nucleus whereas the propionic acid residues are in the Stern layer.
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Solubilization of Hemin in Neutral and Acidic Aqueous Solutions by Forming Complexes with Water-Soluble Macromolecules
TL;DR: In this paper, the effects of pH and ultraviolet (UV) irradiation on the spectroscopic properties of the hemin in neutral and acidic aqueous solutions were examined, and it was shown that hemin was monomeric in polyvinylpyrrolidone, polyethylene glycol, poly(vinyl alcohol) and dextran.