Results 71 to 80 of about 3,943 (245)

Diaryltriazolium Photoswitch: Reaching a Millisecond Cycloreversion with High Stability and NIR Absorption [PDF]

The exceptional thermal stability of diarylethene closed isomers enabled many applications but also prevented utilization in photochromic systems that require rapid thermal reversibility.
Kolarski, D., Klaue, K., Steinbach, P., Bannwarth, C., Hecht, S.   +4 more
core   +3 more sources

Chiroptical Switching by Stereoselective Photochemical Sigmatropic Rearrangements: Experimental Realization of Calderoselectivity

Angewandte Chemie, EarlyView.
Calderoselectivity is established as a stereochemical principle for sigmatropic rearrangements. A homoannulene‐based chiroptical photoswitch undergoes a photochemical [1,11] sigmatropic rearrangement with control of the acyl movement on top of the cyclic π system.
Anne Krenkel, Frederike Beyer, Malte Feßner, Trung Tran Ngoc, Tobias Rüffer, Dominik Hornig, Martin Breugst, Christian Merten, Johannes F. Teichert   +8 more
wiley   +2 more sources

Design, Synthesis, Investigation, and Application of a Macromolecule Photoswitch

Frontiers in Chemistry, 2019
Azobenzene (AZO) has attracted increasing interest due to its reversible structural change upon a light stimulus. However, poor fatigue durability and the photobleaching phenomenon restricts its further application.
Juan Pang, Ziyu Gao, Huaping Tan, Xincheng Mao, Huiming Wang, Xiaohong Hu   +5 more
doaj   +1 more source

Limitations of the impulse response of GaAs MSM photoswitch

, 2014
International audienceAs symmetrical data characteristics I (V) of the Metal-Semiconductor-Metal (MSM) photodetector, we wondered how this device can be used as a photoswitch as well as the low temperature on GaAs photoconductive generally used for this ...
Benzeghda, Sabah, Lampin, Jean-Francois, Decoster, Didier, Hobar, Farida   +3 more
core   +1 more source

Synthesis and Investigation of Macromolecular Photoswitches

Frontiers in Materials, 2020
The photoisomerization of azobenzene (AZO) makes it a potential type of photoswitch for the field of chemical engineering. However, the lack of stability and photobleaching characteristics of reversible photoisomerization have restricted further ...
Juan Pang, Jingyang Kong, Jialing Xu, Xincheng Mao, Xiaohong Hu   +4 more
doaj   +1 more source

Wash-free detection of nucleic acids with photoswitch-mediated fluorescence resonance energy transfer against optical background interference

, 2021
The optical background such as autofluorescence and light scattering poses a big challenge to quantify nucleic acids with conventional fluorescence-based methods.
Zhai, Jingying, Xie, Xiaojiang, Guo, Chao, Wang, Yifu, Yang, Wei   +4 more
core   +1 more source

Azologization and repurposing of a hetero-stilbene-based kinase inhibitor: towards the design of photoswitchable sirtuin inhibitors

Beilstein Journal of Organic Chemistry, 2019
The use of light as an external trigger to change ligand shape and as a result its bioactivity, allows the probing of pharmacologically relevant systems with spatiotemporal resolution.
Christoph W. Grathwol, Nathalie Wössner, Sören Swyter, Adam C. Smith, Enrico Tapavicza, Robert K. Hofstetter, Anja Bodtke, Manfred Jung, Andreas Link   +8 more
doaj   +1 more source

Theoretical Investigation of Substituent Effects on the Dihydroazulene/Vinylheptafulvene Photoswitch: Increasing the Energy Storage Capacity

, 2016
We have investigated the effects of substituents on the properties of the dihydroazulene/vinylheptafulvene photoswitch. The focus is on the changes of the thermochemical properties by placing electron withdrawing and donating groups on the monocyano and ...
Anders B. Skov (3377366), Freja E. Storm (3377369), Stine T. Olsen (3139029), Mogens Brøndsted Nielsen (1327716), Benjamin N. Frandsen (3377372), Henrik G. Kjaergaard (1298550), Mia Harring Hansen (1677979), Aske Nørskov Gejl (1677982), Jonas Elm (1390975), Kurt V. Mikkelsen (1518115)   +9 more
core   +1 more source

Direct monitoring of opto-mechanical switching of self-assembled monolayer films containing the azobenzene group

Beilstein Journal of Nanotechnology, 2011
The potential for manipulation and control inherent in molecule-based motors holds great scientific and technological promise. Molecules containing the azobenzene group have been heavily studied in this context.
Einat Tirosh, Enrico Benassi, Silvio Pipolo, Marcel Mayor, Michal Valášek, Veronica Frydman, Stefano Corni, Sidney R. Cohen   +7 more
doaj   +1 more source

Elizabeth Marek examining new photoswitch system

, 1942
''Elizabeth Marek examines new 'photoswitch.' It turns off signboards automatically during blackouts.''''In the utility section [Public Service Co.] is demonstrated for the first time the new photoswitch, by means of which signboards darken automatically

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