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.

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.

scholarly journals Phosphorescent oxygen-sensing and singlet oxygen production by a biosynthetic silk

RSC Advances ◽  
2016 ◽  
Vol 6 (46) ◽  
pp. 39530-39533 ◽  
Author(s):  
Conor C. Horgan ◽  
Yong-Shen Han ◽  
Holly Trueman ◽  
Colin J. Jackson ◽  
Tara D. Sutherland ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Visible Light ◽  
Triplet State ◽  
Singlet Oxygen ◽  
Singlet State ◽  
Oxygen Sensing ◽  
Coiled Coil ◽  
Intersystem Crossing ◽  
Oxygen Production

A recombinant coiled-coil silk was utilised to immobilise heavy-metal-macrocycles which are known to undergo efficient intersystem crossing from the singlet state to the triplet state following excitation with visible light.

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

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

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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