Two-Photon Excitation of Neat Aerated Solvents with Visible Light Produces Singlet Oxygen

2019 ◽  
Vol 123 (35) ◽  
pp. 7567-7575
Author(s):  
Mikkel Bregnhøj ◽  
Peter R. Ogilby
Keyword(s):  
Visible Light ◽  
Singlet Oxygen ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Synthesis and Characterization of Water-Soluble Phenylene−Vinylene-Based Singlet Oxygen Sensitizers for Two-Photon Excitation

2005 ◽  
Vol 70 (18) ◽  
pp. 7065-7079 ◽  
Author(s):  
Christian B. Nielsen ◽  
Mette Johnsen ◽  
Jacob Arnbjerg ◽  
Michael Pittelkow ◽  
Sean P. McIlroy ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Phenylene Vinylene ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Redox shuttle enhances nonthermal femtosecond two-photon self-doping of rGO–TiO2−x photocatalysts under visible light

2018 ◽  
Vol 6 (34) ◽  
pp. 16430-16438 ◽  
Author(s):  
Peng Ran ◽  
Lan Jiang ◽  
Xin Li ◽  
Pei Zuo ◽  
Bo Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Two Photon ◽  
Photon Excitation ◽  
Redox Shuttle ◽  
Two Photon Excitation

Nonthermal self-doping of visible-active rGO–TiO2−x photocatalysts is proposed through femtosecond two-photon excitation based on redox hole shuttle.

scholarly journals Two-Photon Excitation of Azobenzene Photoswitches for Synthetic Optogenetics

2020 ◽  
Vol 10 (3) ◽  
pp. 805 ◽  
Author(s):  
Shai Kellner ◽  
Shai Berlin
Keyword(s):  
Visible Light ◽  
Light Illumination ◽  
Optical Technique ◽  
Tissue Penetration ◽  
Cellular Targets ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Synthetic optogenetics is an emerging optical technique that enables users to photocontrol molecules, proteins, and cells in vitro and in vivo. This is achieved by use of synthetic chromophores—denoted photoswitches—that undergo light-dependent changes (e.g., isomerization), which are meticulously designed to interact with unique cellular targets, notably proteins. Following light illumination, the changes adopted by photoswitches are harnessed to affect the function of nearby proteins. In most instances, photoswitches absorb visible light, wavelengths of poor tissue penetration, and excessive scatter. These shortcomings impede their use in vivo. To overcome these challenges, photoswitches of red-shifted absorbance have been developed. Notably, this shift in absorbance also increases their compatibility with two-photon excitation (2PE) methods. Here, we provide an overview of recent efforts devoted towards optimizing azobenzene-based photoswitches for 2PE and their current applications.

Singlet oxygen generation by two-photon excitation of porphyrin derivatives having two-photon-absorbing benzothiadiazole chromophores

2007 ◽  
Vol 17 (31) ◽  
pp. 3341 ◽  
Author(s):  
Tsutomu Ishi-i ◽  
Yoshiki Taguri ◽  
Shin-ichiro Kato ◽  
Motoyuki Shigeiwa ◽  
Hideki Gorohmaru ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Oxygen Generation ◽  
Two Photon ◽  
Singlet Oxygen Generation ◽  
Porphyrin Derivatives ◽  
Photon Excitation ◽  
Two Photon Excitation

Singlet Oxygen Production upon Two-Photon Excitation of TiO2in Chloroform

ChemPhysChem ◽  
2009 ◽  
Vol 10 (11) ◽  
pp. 1789-1793 ◽  
Author(s):  
Wenbing Li ◽  
Naveen Gandra ◽  
Shavelle N. Courtney ◽  
Ruomei Gao
Keyword(s):  
Singlet Oxygen ◽  
Oxygen Production ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation

Gold nanorod enhanced conjugated polymer/photosensitizer composite nanoparticles for simultaneous two-photon excitation fluorescence imaging and photodynamic therapy

Nanoscale ◽  
2019 ◽  
Vol 11 (41) ◽  
pp. 19551-19560 ◽  
Author(s):  
Shuang Li ◽  
Xiaoqin Shen ◽  
Qing-Hua Xu ◽  
Yong Cao
Keyword(s):  
Photodynamic Therapy ◽  
Energy Transfer ◽  
Singlet Oxygen ◽  
Plasmon Resonance ◽  
Conjugated Polymer ◽  
Oxygen Generation ◽  
Two Photon ◽  
Singlet Oxygen Generation ◽  
Photon Excitation ◽  
Two Photon Excitation

Plasmon resonance and energy transfer are integrated to prepare nano-photosensitizers with enhanced two-photon excitation fluorescence and singlet oxygen generation ability.

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