scholarly journals Expanding the Toolbox of Octahedral Molybdenum Clusters and Nanocomposites Made Thereof: Evidence of Two-Photon Absorption Induced NIR Emission and Singlet Oxygen Production

2021 ◽  
Author(s):  
Soumaya Khlifi ◽  
Gregory Taupier ◽  
Maria Amela-Cortes ◽  
Noée Dumait ◽  
Stéphane Freslon ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Photon Absorption ◽  
Oxygen Production ◽  
Two Photon Absorption ◽  
Molybdenum Clusters ◽  
Two Photon ◽  
Nir Emission

scholarly journals π-Extended diketopyrrolopyrrole–porphyrin arrays: one- and two-photon photophysical investigations and theoretical studies

2016 ◽  
Vol 18 (31) ◽  
pp. 21954-21965 ◽  
Author(s):  
Md. M. Alam ◽  
F. Bolze ◽  
C. Daniel ◽  
L. Flamigni ◽  
C. Gourlaouen ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Cross Sections ◽  
Production Efficiency ◽  
Photon Absorption ◽  
Theoretical Studies ◽  
Absorption Cross ◽  
Oxygen Production ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Nir Emission

Diketopyrrolopyrrole–porphyrin conjugates show remarkable NIR emission properties, high two-photon absorption cross-sections and significant singlet oxygen production efficiency.

scholarly journals Evidencing ((n-C4H9)4N)2[W6I14] red-NIR emission and singlet oxygen generation by two photon absorption

2021 ◽  
Author(s):  
Yann Molard ◽  
Grégory Taupier ◽  
Serge Paofai ◽  
Stéphane Cordier
Keyword(s):  
Solid State ◽  
Singlet Oxygen ◽  
Photon Absorption ◽  
Oxygen Generation ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Singlet Oxygen Generation ◽  
Nir Light ◽  
Tungsten Clusters ◽  
Nir Emission

We report the first proof of the ability of octahedral tungsten clusters to emit red-NIR light and to produce singlet oxygen upon two-photon absorption, in solution and in the solid-state....

scholarly journals Highly efficient singlet oxygen generation, two-photon photodynamic therapy and melanoma ablation by rationally designed mitochondria-specific near-infrared AIEgens

2020 ◽  
Vol 11 (9) ◽  
pp. 2494-2503 ◽  
Author(s):  
Zheng Zheng ◽  
Haixiang Liu ◽  
Shaodong Zhai ◽  
Haoke Zhang ◽  
Guogang Shan ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Near Infrared ◽  
Molecular Engineering ◽  
Photon Absorption ◽  
Oxygen Generation ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Singlet Oxygen Generation ◽  
Highly Efficient

Mitochondria-targeted photosensitizers with highly efficient singlet oxygen generation, bright near-infrared AIE and good two-photon absorption are obtained through ingenious molecular engineering for cancer cell-selective photodynamic therapy.

Synthesis, DNA photocleavage, singlet oxygen photogeneration and two photon absorption properties of ruthenium-phenanthroline porphyrins

2015 ◽  
Vol 19 (09) ◽  
pp. 1046-1052 ◽  
Author(s):  
Ze-Bin Xu ◽  
Fa-Quan Yu ◽  
Fengshou Wu ◽  
Heng Zhang ◽  
Kai Wang ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Cross Section ◽  
Therapeutic Agents ◽  
Photon Absorption ◽  
Quantum Yields ◽  
Absorption Properties ◽  
Dna Photocleavage ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photochemical Properties

Through a new synthetic route, three ruthenium-phenanthroline porphyrins (RPP1, RPP2 and RPP3) were prepared. Their photophysical and photochemical properties, such as DNA photocleavage activity, singlet-oxygen photogeneration and two-photon absorption (2PA) were evaluated. These porphyrins 1–3 had substantial photocleavage activities, with 71%, 74% and 38% observed at 20 μM. The porphyrins with different substituents on phenathroline group had similar singlet oxygen quantum yields, with ΦΔ values at 0.52, 0.47 and 0.41, respectively. The 2PA cross-section (σ(2)) values of RPP 1–3, measured by the Z-scan method, were calculated to be 152, 172 and 135 GM, respectively, which were around 5-fold higher than that of H2TPP . Thus, these porphyrins, with their good photocleavage activities, 1 O 2 quantum yields and high 2PA cross section, suggest great potential as photodynamic therapeutic agents.

Acetylene bridged porphyrin–monophthalocyaninato ytterbium(iii) hybrids with strong two-photon absorption and high singlet oxygen quantum yield

2012 ◽  
Vol 41 (15) ◽  
pp. 4536 ◽  
Author(s):  
Hanzhong Ke ◽  
Wenbin Li ◽  
Tao Zhang ◽  
Xunjin Zhu ◽  
Hoi-Lam Tam ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Singlet Oxygen ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Diketopyrrolopyrrole-Porphyrin Conjugates with High Two-Photon Absorption and Singlet Oxygen Generation for Two-Photon Photodynamic Therapy

2014 ◽  
Vol 127 (1) ◽  
pp. 171-175 ◽  
Author(s):  
Julie Schmitt ◽  
Valérie Heitz ◽  
Angélique Sour ◽  
Frédéric Bolze ◽  
Hussein Ftouni ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Photon Absorption ◽  
Oxygen Generation ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Singlet Oxygen Generation

Two-Photon Absorption Properties of New Fluorene-Based Singlet Oxygen Photosensitizers

2009 ◽  
Vol 113 (11) ◽  
pp. 4706-4711 ◽  
Author(s):  
Kevin D. Belfield ◽  
Mykhailo V. Bondar ◽  
Florencio E. Hernandez ◽  
Artëm E. Masunov ◽  
Ivan A. Mikhailov ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Two-Photon Photodynamic Therapy by Water-Soluble Self-Assembled Conjugated Porphyrins

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Kazuya Ogawa ◽  
Yoshiaki Kobuke
Keyword(s):  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Cross Section ◽  
Water Soluble ◽  
Photon Absorption ◽  
Time Resolved ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Luminescence Measurement ◽  
Water Soluble Porphyrin

Studies on two-photon absorption (2PA) photodynamic therapy (PDT) by using three water-soluble porphyrin self-assemblies consisting of ethynylene-linked conjugatedbis(imidazolylporphyrin) are reviewed. 2PA cross-section values in water were obtained by an open aperture Z-scan measurement, and values were extremely large compared with those of monomeric porphyrins such as hematoporphyrin. These compounds were found to generate singlet oxygen efficiently upon one- as well as two-photon absorption as demonstrated by the time-resolved luminescence measurement at the characteristic band of singlet oxygen at 1270 nm and by using its scavenger. Photocytotoxicities for HeLa cancer cells were examined and found to be as high as those of hematoporphyrin, demonstrating that these compounds are potential candidates for 2PA-photodynamic therapy agents.

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