An improved singlet oxygen sensitizer with two-photon absorption and emission in the biological transparency window as a result of ground state symmetry-breaking

2012 ◽  
Vol 48 (11) ◽  
pp. 1689-1691 ◽  
Author(s):  
Thibault Gallavardin ◽  
Chloé Armagnat ◽  
Olivier Maury ◽  
Patrice L. Baldeck ◽  
Mikael Lindgren ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Singlet Oxygen ◽  
Ground State ◽  
Transparency Window ◽  
Photon Absorption ◽  
Absorption And Emission ◽  
Two Photon Absorption ◽  
Two Photon

Two-photon absorption spectra of a near-infrared 2-azaazulene polymethine dye: solvation and ground-state symmetry breaking

2013 ◽  
Vol 15 (20) ◽  
pp. 7666 ◽  
Author(s):  
Honghua Hu ◽  
Olga V. Przhonska ◽  
Francesca Terenziani ◽  
Anna Painelli ◽  
Dmitry Fishman ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Absorption Spectra ◽  
Ground State ◽  
Near Infrared ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Polymethine Dye

Fluorescence anisotropy in indole under two-photon excitation in the spectral range 385–510 nm

2018 ◽  
Vol 20 (30) ◽  
pp. 19922-19931 ◽  
Author(s):  
M. E. Sasin ◽  
A. G. Smolin ◽  
K.-H. Gericke ◽  
E. Tokunaga ◽  
O. S. Vasyutinskii
Keyword(s):  
Propylene Glycol ◽  
Excited States ◽  
Spectral Range ◽  
Ground State ◽  
Fluorescence Anisotropy ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photon Excitation ◽  
Molecular Ground State

This paper presents the detailed study of two-photon excited fluorescence in indole dissolved in propylene glycol produced by two-photon absorption from the molecular ground state to several high lying excited states.

One- and two-photon absorption and emission properties of heteroaromatic bichromophores

2008 ◽  
Author(s):  
Alessandro Abbotto ◽  
Luca Bellotto ◽  
Renato Bozio ◽  
Camilla Ferrante ◽  
Ilaria Fortunati ◽  
...  
Keyword(s):  
Photon Absorption ◽  
Absorption And Emission ◽  
Emission Properties ◽  
Two Photon Absorption ◽  
Two Photon

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.

TWO-PHOTON ABSORPTION AND EMISSION PROCESS

2005 ◽  
Vol 08 (04) ◽  
pp. 573-591 ◽  
Author(s):  
FRANCO FAGNOLA ◽  
ROBERTO QUEZADA
Keyword(s):  
Detailed Balance ◽  
Photon Absorption ◽  
Positive Temperature ◽  
Stationary States ◽  
Emission Process ◽  
Absorption And Emission ◽  
Detailed Balance Condition ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Invariant States

We analyze the two-photon absorption and emission process and characterize the stationary states at zero and positive temperature. We show that entangled stationary states exist only at zero temperature and, at positive temperature, there exists infinitely many commuting invariant states satisfying the detailed balance condition.

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.

Two-photon absorption and emission in CsPb(Br/I)3cesium lead halide perovskite quantum dots

CrystEngComm ◽  
2016 ◽  
Vol 18 (41) ◽  
pp. 7945-7949 ◽  
Author(s):  
Jingzhou Li ◽  
Saifeng Zhang ◽  
Hongxing Dong ◽  
Xinqiang Yuan ◽  
Xiongwei Jiang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photon Absorption ◽  
Absorption And Emission ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite ◽  
Lead Halide
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