Photophysical and photochemical properties of the water-soluble porphyrin complexes of metals of the platinum group

1999 ◽  
Vol 66 (4) ◽  
pp. 583-587 ◽  
Author(s):  
V. V. Vasil'ev ◽  
I. A. Blinova ◽  
I. V. Golovina ◽  
S. M. Borisov
Keyword(s):  
Water Soluble ◽  
Photochemical Properties ◽  
Platinum Group ◽  
Water Soluble Porphyrin

scholarly journals Formation, Photophysics, and Photochemistry of Anionic Lanthanide(III) Mono- and Bisporphyrins

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1309 ◽  
Author(s):  
Muhammad Imran ◽  
Melitta Kiss ◽  
Zsolt Valicsek ◽  
Ottó Horváth
Keyword(s):  
Coordination Compounds ◽  
Room Temperature ◽  
Continuous Wave ◽  
Water Soluble ◽  
Quantum Yields ◽  
Excitation Wavelength ◽  
Time Resolved ◽  
Visible Irradiation ◽  
Photochemical Properties ◽  
Water Soluble Porphyrin

Since water-soluble porphyrin complexes of lanthanides(III) have proved to be promising for medical applications (e.g., luminescence imaging, photodynamic therapy, and theranostics), the investigation of the formation, photophysical, and photochemical properties of such coordination compounds provides useful pieces of information for their potential usage. Steady-state and time-resolved fluorometry, UV–Vis absorption spectroscopy, and continuous-wave photolysis were utilized for this purpose. 5,10,15,20-Tetrakis(4-sulfonatophenyl)porphyrin formed mono- and bisporphyrin complexes with samarium(III), europium(III), and gadolinium(III) as representatives in the middle of the lanthanide series. The special photoinduced behavior of these compounds was mostly determined by the position of the metal center, which was located out of the ligand plane, thus distorting it. Besides, the photochemical and, especially, photophysical features of the corresponding mono- and bisporphyrin complexes were similar because, in the latter species, two monoporphyrins were connected by a weak metal bridge between the peripheral sulfonato substituents (tail-to-tail dimerization). The formation of these coordination compounds and the transformation reactions between the mono- and bisporphyrins were rather slow in the dark at room temperature. These processes were accelerated by visible irradiation. However, dissociation and, especially, redox degradation were the main photoreactions in these systems, although with low quantum yields. Additionally, depending on the excitation wavelength, new types of photoproducts were also detected.

Water-soluble porphyrin as temperature sensor based on fluorescent enhancement

2014 ◽  
Vol 30 (3) ◽  
pp. 379-382 ◽  
Author(s):  
Qiang Fei ◽  
Chunyu Wang ◽  
Baojun Wang ◽  
Hui Xu ◽  
Guanghua Li ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Water Soluble ◽  
Water Soluble Porphyrin

Excited-state properties of water-soluble porphyrin dimers

1986 ◽  
Vol 130 (6) ◽  
pp. 555-559 ◽  
Author(s):  
U. Hofstra ◽  
R.B.M. Koehorst ◽  
T.J. Schaafsma
Keyword(s):  
Excited State ◽  
Water Soluble ◽  
Water Soluble Porphyrin ◽  
Porphyrin Dimers

scholarly journals 5-Phenyl-10,15,20-Tris(4-sulfonatophenyl)porphyrin: Synthesis, Catalysis, and Structural Studies

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3363 ◽  
Author(s):  
Aitor Arlegui ◽  
Zoubir El-Hachemi ◽  
Joaquim Crusats ◽  
Albert Moyano
Keyword(s):  
Alder Reaction ◽  
Water Soluble ◽  
Experimental Conditions ◽  
One Pot ◽  
Force Microscopy ◽  
Diels Alder Reaction ◽  
Transmission Electron ◽  
Porphyrin Synthesis ◽  
The One ◽  
Water Soluble Porphyrin

A convenient protocol for the preparation of 5-phenyl-10,15,20-tris(4-sulfonatophenyl)porphyrin, a water-soluble porphyrin with unique aggregation properties, is described. The procedure relies on the one-pot reductive deamination of 5-(4-aminophenyl)-10,15,20-tris(4-sulfonatophenyl)porphyrin, that can be in turn easily obtained from 5,10,15,20-tetraphenylporphyrin by a known three-step sequence involving mononitration, nitro to amine reduction and sulfonation of the phenyl groups. This method provides the title porphyrin in gram scale, and compares very favorably with the up to now only described procedure based on the partial sulfonation of TPP, that involves a long and tedious chromatographic enrichment of the final compound. This has allowed us to study for the first time both the use of its zwitterionic aggregate as a supramolecular catalyst of the aqueous Diels–Alder reaction, and the morphology of the aggregates obtained under optimized experimental conditions by atomic force microscopy and also by transmission electron cryomicroscopy.

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