Measurement and characterization of singlet oxygen production in copper ion-catalyzed aerobic oxidation of ascorbic acid

Talanta ◽  
2007 ◽  
Vol 72 (1) ◽  
pp. 231-236 ◽  
Author(s):  
B SONG ◽  
G WANG ◽  
J YUAN
Keyword(s):  
Ascorbic Acid ◽  
Singlet Oxygen ◽  
Aerobic Oxidation ◽  
Copper Ion ◽  
Oxygen Production

Synthesis and characterization of novel 5-monocarbohydrate-10,20-bis-aryl-porphyrins

2020 ◽  
Vol 24 (01n03) ◽  
pp. 330-339
Author(s):  
Flávio Figueira ◽  
Leandro M. O. Lourenço ◽  
Maria G. P. M. S. Neves ◽  
José A. S. Cavaleiro ◽  
João P. C. Tomé
Keyword(s):  
Singlet Oxygen ◽  
Synthesis And Characterization ◽  
Spectroscopic Techniques ◽  
Oxygen Production ◽  
Porphyrin Derivatives ◽  
Porphyrin Macrocycle ◽  
Meso Position

The synthesis of derivatives bearing glucose or galactose units linked by an acrylate spacer to one free meso position of a bis-aryl-porphyrin macrocycle was developed and characterized by standard spectroscopic techniques. The new mono-substituted gluco- and galacto-porphyrin derivatives 5–8 present an alternative to the widespread tetra-aryl porphyrin functionalization. Singlet oxygen studies showed a comparable singlet oxygen production with TPP. Furthermore, the less bulky architectures here synthesized present an opportunity to enhance the PDT and PDI capabilities of glycoporphyrins with a simple synthetic modification at one of the meso positions.

Efficient cyanoaromatic photosensitizers for singlet oxygen production: synthesis and characterization of the transient reactive species

2013 ◽  
Vol 15 (40) ◽  
pp. 17219 ◽  
Author(s):  
Filippo Ronzani ◽  
Emmanuel Arzoumanian ◽  
Sylvie Blanc ◽  
Patrice Bordat ◽  
Thierry Pigot ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Reactive Species ◽  
Synthesis And Characterization ◽  
Oxygen Production

Methylthio BODIPY as a standard triplet photosensitizer for singlet oxygen production: a photophysical study

2019 ◽  
Vol 21 (36) ◽  
pp. 20403-20414 ◽  
Author(s):  
Ruth Prieto-Montero ◽  
Rebeca Sola-Llano ◽  
Raul Montero ◽  
Asier Longarte ◽  
Teresa Arbeloa ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Singlet State ◽  
Oxygen Production ◽  
Photophysical Study

The detailed triplet and singlet state characterization of 3,5-dimethyl-2,6-diiodo-8-thiomethyl-pyrromethene (MeSBDP), a promising standard sensitizer for singlet oxygen production.

One- and Two-Photon Photosensitized Singlet Oxygen Production:  Characterization of Aromatic Ketones as Sensitizer Standards

2007 ◽  
Vol 111 (26) ◽  
pp. 5756-5767 ◽  
Author(s):  
Jacob Arnbjerg ◽  
Martin J. Paterson ◽  
Christian B. Nielsen ◽  
Mikkel Jørgensen ◽  
Ove Christiansen ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Oxygen Production ◽  
Aromatic Ketones ◽  
Two Photon

Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Mai Ngọc Tuan Anh
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Ascorbic Acid ◽  
Silver Nitrate ◽  
Sodium Borohydride ◽  
Trisodium Citrate ◽  
Synthesis And Characterization ◽  
Silver Nanoplates ◽  
Seed Mediated

Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

Characterization of Ascorbic Acid Uptake by Isolated Rat Kidney Cells

1991 ◽  
Vol 121 (1) ◽  
pp. 57-64 ◽  
Author(s):  
Delores M. Bowers-Komro ◽  
Donald B. McCormick
Keyword(s):  
Ascorbic Acid ◽  
Rat Kidney ◽  
Acid Uptake ◽  
Kidney Cells ◽  
Isolated Rat Kidney ◽  
Isolated Rat

scholarly journals Functionalization of Photosensitized Silica Nanoparticles for Advanced Photodynamic Therapy of Cancer

2021 ◽  
Vol 22 (12) ◽  
pp. 6618
Author(s):  
Ruth Prieto-Montero ◽  
Alejandro Prieto-Castañeda ◽  
Alberto Katsumiti ◽  
Miren P. Cajaraville ◽  
Antonia R. Agarrabeitia ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Absorption Capacity ◽  
Oxygen Production ◽  
Photodynamic Therapy Of Cancer ◽  
Custom Made ◽  
Fluorescence Efficiency ◽  
Covalently Linked

BODIPY dyes have recently attracted attention as potential photosensitizers. In this work, commercial and novel photosensitizers (PSs) based on BODIPY chromophores (haloBODIPYs and orthogonal dimers strategically designed with intense bands in the blue, green or red region of the visible spectra and high singlet oxygen production) were covalently linked to mesoporous silica nanoparticles (MSNs) further functionalized with PEG and folic acid (FA). MSNs approximately 50 nm in size with different functional groups were synthesized to allow multiple alternatives of PS-PEG-FA decoration of their external surface. Different combinations varying the type of PS (commercial Rose Bengal, Thionine and Chlorine e6 or custom-made BODIPY-based), the linkage design, and the length of PEG are detailed. All the nanosystems were physicochemically characterized (morphology, diameter, size distribution and PS loaded amount) and photophysically studied (absorption capacity, fluorescence efficiency, and singlet oxygen production) in suspension. For the most promising PS-PEG-FA silica nanoplatforms, the biocompatibility in dark conditions and the phototoxicity under suitable irradiation wavelengths (blue, green, or red) at regulated light doses (10–15 J/cm2) were compared with PSs free in solution in HeLa cells in vitro.

Chemistry of singlet oxygen: Isolation and characterization of a stable allene oxide from a fulvene endoperoxide

1993 ◽  
Vol 34 (8) ◽  
pp. 1255-1258 ◽  
Author(s):  
Ihsan Erden ◽  
Jane Drummond ◽  
Roger Alstad ◽  
Fupei Xu
Keyword(s):  
Singlet Oxygen ◽  
Allene Oxide ◽  
Isolation And Characterization
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