Results 61 to 70 of about 179,442 (256)

PMP(Porphyrin–Micelle–PSMA) Nanoparticles for Photoacoustic and Ultrasound Signal Amplification in Mouse Prostate Cancer Xenografts

Pharmaceutics, 2021
Photoacoustic (PA) imaging is used widely in cancer diagnosis. However, the availability of PA agents has not made great progress due to the limitations of the one currently in use, porphyrin.
Daehyun Kim, Wonkook Han, Jin Ho Chang, Hak Jong Lee   +3 more
doaj   +1 more source

Azolium‐Porphyrin Electrosynthesis

ChemSusChem
AbstractElectrochemical oxidation of Zn(II) 2,7,12,17‐tetra‐tert‐butylporphyrin in the presence of a series of azole derivatives (1‐methylimidazole, 1‐vinyl‐1H‐imidazole, 2‐(1H‐imidazol‐1‐yl)pyridine, 1‐methylbenzimidazole, 1‐methyl‐1H‐1,2,4‐triazole, and benzothiazole) affords the corresponding meso‐substituted azolium‐porphyrins in very mild ...
Akhssas, Fatima, Lin, Rongning, Trojan, Michal, Poyac, Ludivine, Amiri, Nesrine, Ertel, Thibault, Fournier, Sophie, Lerayer, Emmanuel, Cattey, Hélène, Clément, Sébastien, Richeter, Sébastien, Devillers, Charles   +11 more
openaire   +4 more sources

En Route to a Chiral Melanin: The Dynamic “From-Imprinted-to-Template” Supramolecular Role of Porphyrin Hetero-Aggregates During the Oxidative Polymerization of L-DOPA

Frontiers in Chemistry, 2020
Chiral porphyrin hetero-aggregates, produced from meso-tetrakis(4-N-methylpyridyl) porphyrin H2T4 and copper(II) meso-tetrakis(4-sulfonatophenyl)porphyrin CuTPPS by an imprinting effect in the presence of L-3,4-dihydroxyphenylalanine (L-DOPA), are shown ...
Massimiliano Gaeta, Rosalba Randazzo, Valentina Villari, Norberto Micali, Alessandro Pezzella, Roberto Purrello, Marco d'Ischia, Alessandro D'Urso   +7 more
doaj   +1 more source

The effect of porphyrins on normal and transformed mouse cell lines in the presence of visible light

Brazilian Journal of Medical and Biological Research, 2001
Photodynamic therapy consists of the uptake of a photosensitizing dye, often a porphyrin, by tumor tissue and subsequent irradiation of the tumor with visible light of an appropriate wavelength matched to the absorption spectrum of the photosensitizing ...
S.P.S Tita, J.R. Perussi
doaj   +1 more source

Artificial photosynthetic reaction centers coupled to light-harvesting antennas

, 2010
We analyze a theoretical model for energy and electron transfer in an artificial photosynthetic system. The photosystem consists of a molecular triad (i.e., with a donor, a photosensitive unit, and an acceptor) coupled to four accessory light-harvesting ...
Ghosh, Pulak Kumar, Nori, Franco, Smirnov, Anatoly Yu.   +2 more
core   +1 more source

Peptide Multifunctionalization via Modular Construction of Trans‐AB2C Porphyrin on Resin

Advanced Science
Peptide multifunctionalization is a crucial technique to develop peptide‐based agents for various purposes. Porphyrin‐peptide conjugates are a class of popular multifunctional peptides renowned for their multifunctional and multimodal properties. However,
Yue Wu, Yuen‐Ting Wong, Yik‐Hoi Yeung, Pak‐Lun Lam, Ho‐Fai Chau, Wing‐Sze Tam, Qian Zhang, William C. S. Tai, Ka‐Leung Wong   +8 more
doaj   +1 more source

Cheating death: How a porphyrin transporter fuels survival in hypoxia

ASPET Discovery
Heme is an important cofactor in biological processes such as oxidative phosphorylation, and its biosynthesis is altered in stress conditions including hypoxia.
Yu Fukuda, John Lynch, Partha Krishnamurthy, Yao Wang, Juwina Wijaya, Andres Herrada, Geoffrey Neale, Hongbo Chi, John D. Schuetz   +8 more
doaj   +1 more source

Zinc(II)-5,10,15,20-tetrakis(α-pyridino-m-tolyl)porphyrin Tetrabromide

Molbank, 2009
Cationic porphyrins interact strongly with guanine quadruplex (G-quadruplex) DNA. We report the preparation of the zinc(II) complex of a porphyrin bearing cationic side arms, zinc(II)-5,10,15,20-tetrakis(α-pyridino-m-tolyl)porphyrin tetrabromide (ZnmPy),
Satoshi Fujii, Tadayuki Uno, Yoshinobu Ishikawa, Takeshi Yamashita   +3 more
doaj   +1 more source

Self-assembled micro and nano rod-shaped porphyrin@Bi12O17Cl2 composite as an efficient photocatalyst for degradation of organic contaminants

Discover Nano, 2023
Bi12O17Cl2 is a potential photocatalyst in practical applications due to its excellent photostability, visible light activity, and competitive bandgap energy.
Osemeikhian Ogbeifun, Shepherd M. Tichapondwa, Evans M. N. Chirwa   +2 more
doaj   +1 more source

Conjugatable water-soluble Pt(ii) and Pd(ii) porphyrin complexes: Novel nano- and molecular probes for optical oxygen tension measurement in tissue engineering [PDF]

, 2014
Measurement of oxygen tension in compressed collagen sheets was performed using matrix-embedded optical oxygen sensors based on platinum(II) and palladium(II) porphyrins supported on polyacrylamide nanoparticles.
Athanasiadis, A., Aylott, J. W., Beeby, A., Boyle, R. W., Brown, R. A., Chauhan, V. M., Giuntini, F., MacRobert, A. J., Rosser, G. A.   +8 more
core   +1 more source