Results 11 to 20 of about 23,102 (300)

Azobenzene protonation as a tool for temperature sensing [PDF]

Beilstein Journal of Organic Chemistry
Azobenzenes can be protonated at one of the azo nitrogen atoms, leading to significant changes in their absorption and photochemical properties. While azobenzene protonation has been recently used as a tool in photoswitching studies, the factors ...
Antti Siiskonen, Sami Vesamäki, Arri Priimagi   +2 more
doaj   +2 more sources

Synthesis of N-acetyl diazocine derivatives via cross-coupling reaction [PDF]

Beilstein Journal of Organic Chemistry
Diazocines are photoswitches derived from azobenzenes by bridging the two phenyl rings in ortho position with a CH2CH2 group forming an eight membered (diazocine) ring.
Thomas Brandt, Pascal Lentes, Jeremy Rudtke, Michael Hösgen, Christian Näther, Rainer Herges   +5 more
doaj   +2 more sources

Active Ester Functionalized Azobenzenes as Versatile Building Blocks

Molecules, 2021
Azobenzenes are important molecular switches that can still be difficult to functionalize selectively. A high yielding Pd-catalyzed cross-coupling method under mild conditions for the introduction of NHS esters to azobenzenes and diazocines has been ...
Sven Schultzke, Melanie Walther, Anne Staubitz   +2 more
doaj   +1 more source

Direct and Versatile Synthesis of Red‐Shifted Azobenzenes

Angewandte Chemie - International Edition, 2016
Mickel J Hansen, Michael M Lerch, Wiktor Szymanski   +2 more
exaly   +2 more sources

Dihydroazulene‐Azobenzene‐Dihydroazulene Triad Photoswitches [PDF]

Chemistry – A European Journal, 2021
AbstractPhotoswitch triads comprising two dihydroazulene (DHA) units in conjugation with a central trans‐azobenzene (AZB) unit were prepared in stepwise protocols starting from meta‐ and para‐disubstituted azobenzenes. The para‐connected triad had significantly altered optical properties and lacked the photoactivity of the separate photochromes.
Alvis Mengots, Andreas Erbs Hillers‐Bendtsen, Sandra Doria, Frederik Ørsted Kjeldal, Nicolai Machholdt Høyer, Anne Ugleholdt Petersen, Kurt V. Mikkelsen, Mariangela Di Donato, Martina Cacciarini, Mogens Brøndsted Nielsen   +9 more
openaire   +6 more sources

Reversible, Red-Shifted Photoisomerization in Protonated Azobenzenes

Journal of Organic Chemistry, 2022
Azobenzenes are among the best-studied molecular photoswitches and play a key role in the search for red-shifted photoresponsive materials for extended applications.
Jonas Rickhoff, Niklas B Arndt, M. Böckmann, N. Doltsinis, B. Ravoo, Luuk Kortekaas   +5 more
semanticscholar   +1 more source

Building Triazolated Macrocycles from Bis-Propargylated Calix[4]arenes and Bis-Azidomethylated Azobenzene or Stilbene

Molbank, 2023
Copper(I)-catalyzed azide-alkyne cycloaddition was employed to construct biscalixarene assemblies from the calix[4]arene dipropargyl ethers and 4,4′-bis-azidomethylated azobenzene or stilbene.
Ivan Lentin, Ilia Korniltsev, Alexander Gorbunov, Dmitry Cheshkov, Stanislav Bezzubov, Vladimir Kovalev, Ivan Vatsouro   +6 more
doaj   +1 more source

Azobenzene-Oxindole Photochromic Dyads. [PDF]

Angew Chem Int Ed Engl
AbstractManipulation of molecular geometry using photoresponsive units is a powerful tool in supramolecular chemistry, smart materials, and photopharmacology. Current synthetic chemistry offers many responsive molecules that perform such a task.
Ovalle M, Doellerer D, Feringa BL.
europepmc   +4 more sources

Photomechanical Solid Polymers: Model for Pressure and Strain Induced by Photoisomerization and Photo-Orientation

Applied Sciences, 2022
Photoactive polymers are important for fundamental studies and applications in several area of photonics such as data storage and holography and nonlinear optics and photomechanics.
Zouheir Sekkat
doaj   +1 more source

Fluorinated Azobenzenes Switchable with Red Light

Chemistry, 2021
Molecular photoswitches triggered with red or NIR light are optimal for photomodulation of complex biological systems, including efficient penetration of the human body for therapeutic purposes (“therapeutic window”).
Anna-Lena Leistner, Susanne Kirchner, Johannes Karcher, Tobias Bantle, Mariam L. Schulte, Peter Gödtel, Christian Fengler, Z. Pianowski   +7 more
semanticscholar   +1 more source