2-(4-Nitrophenyl)-1H-indolyl-3-methyl chromophore: A versatile photocage that responds to visible-light one-photon and near-infrared-light two-photon excitations

2021 ◽  
Author(s):  
Qianghua Lin ◽  
Runzhao Guo ◽  
Kozue Hamao ◽  
Ryukichi Takagi ◽  
Manabu Abe
Keyword(s):  
Visible Light ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Two Photon ◽  
Photon Excitations

scholarly journals Dynamics of Oxygen-Independent Photocleavage of Blebbistatin as a One-Photon Blue or Two-Photon Near-Infrared Light-Gated Hydroxyl Radical Photocage

2018 ◽  
Vol 140 (46) ◽  
pp. 15957-15968 ◽  
Author(s):  
Ming-De Li ◽  
Nai-Kei Wong ◽  
Jia Xiao ◽  
Ruixue Zhu ◽  
Liangliang Wu ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Two Photon

scholarly journals Powering rotary molecular motors with low-intensity near-infrared light

2020 ◽  
Vol 6 (44) ◽  
pp. eabb6165
Author(s):  
Lukas Pfeifer ◽  
Nong V. Hoang ◽  
Maximilian Scherübl ◽  
Maxim S. Pshenichnikov ◽  
Ben L. Feringa
Keyword(s):  
Smart Materials ◽  
Molecular Motors ◽  
Near Infrared ◽  
In Vivo Studies ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Two Photon ◽  
Low Intensity

Light-controlled artificial molecular machines hold tremendous potential to revolutionize molecular sciences as autonomous motion allows the design of smart materials and systems whose properties can respond, adapt, and be modified on command. One long-standing challenge toward future applicability has been the need to develop methods using low-energy, low-intensity, near-infrared light to power these nanomachines. Here, we describe a rotary molecular motor sensitized by a two-photon absorber, which efficiently operates under near-infrared light at intensities and wavelengths compatible with in vivo studies. Time-resolved spectroscopy was used to gain insight into the mechanism of energy transfer to the motor following initial two-photon excitation. Our results offer prospects toward in vitro and in vivo applications of artificial molecular motors.

Cellular deoxyribonucleic-acid probes of two-photon-excited fluorescent quinolinium-substituted carbazole

The Analyst ◽  
2019 ◽  
Vol 144 (4) ◽  
pp. 1245-1252
Author(s):  
Yanru Feng ◽  
Shuheng Chi ◽  
Yanli Zhao ◽  
Yunjie Zhang ◽  
Yiqun Wu
Keyword(s):  
Deoxyribonucleic Acid ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Carbazole Derivatives ◽  
Two Photon

Three new quinolinium-carbazole derivatives as deoxyribonucleic-acid probes irradiated with near-infrared-light have been designed and synthesized.

Covalent Organic Framework for Improving Near‐Infrared Light Induced Fluorescence Imaging through Two‐Photon Induction

2019 ◽  
Vol 132 (25) ◽  
pp. 10173-10180 ◽  
Author(s):  
Jin‐Yue Zeng ◽  
Xiao‐Shuang Wang ◽  
Bo‐Ru Xie ◽  
Min‐Jie Li ◽  
Xian‐Zheng Zhang
Keyword(s):  
Fluorescence Imaging ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Covalent Organic Framework ◽  
Two Photon ◽  
Organic Framework

scholarly journals IMAGING DIAGNOSTICS OF COMBUSTION INSTABILITY IN PREMIXED SWIRLING COMBUSTION

2020 ◽  
Vol 4 ◽  
pp. 80-93
Author(s):  
Yao Yang ◽  
Gaofeng Wang ◽  
Yuanqi Fang ◽  
YIfan Xia ◽  
Liang Zhong
Keyword(s):  
Visible Light ◽  
Near Infrared ◽  
Combustion Instability ◽  
Infrared Light ◽  
Imaging Method ◽  
Near Infrared Light ◽  
Stable Combustion ◽  
Significant Difference ◽  
Unstable Combustion ◽  
Swirling Flames

An experimental study on combustion instability is presented with focus on propane-air premixed swirling flames. Swirling flames under self-excited oscillation are studied by imaging of visible light and OH* chemiluminescence filter under several typical conditions. The dynamical characteristics of swirling flames were analysed by Dynamic Mode Decomposition (DMD) method. Three types of unstable modes in the combustor system were observed, which correspond to typical acoustic resonant modes (LF mode, C1/4 mode and P1/2 mode) of the combustor system. The combustion instability is in the longitudinal mode. Furthermore, the structure of downstream hot burnt gas under stable combustion and unstable combustion is studied by imaging of visible light and near-infrared light. Results show that there is a significant difference in the downstream flow under stable combustion and unstable combustion. The DMD spectrum of the flame and the downstream hot burnt gas obtained is the same, which is close to the characteristic frequency of acoustic pressure captured by the microphone signal. The visible light and near-infrared light imaging observation method adopted in this paper provides a new imaging method for the investigation of thermo-acoustic instability.

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