Results 11 to 20 of about 78,896 (178)

Triplet-Sensitized Bidirectional Isomerization of Bridged Azobenzene [PDF]

, 2023
Diazocine is a bridged azobenzene with both phenyl rings connected by a CH2-CH2 group. Despite this rather small structural difference, diazocine exhibits improved properties over azobenzene as a photoswitch, such as high switching efficiencies, very high quantum yields, switching wavelengths in the visible range, and most importantly, the fact that it
Jussi Isokuortti, Thomas Griebenow, Jan-Simon von Glasenapp, Tim Raeker, Mihail A. Filatov, Timo Laaksonen, Rainer Herges, Nikita A. Durandin   +7 more
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Nonadiabatic ab initio molecular dynamics of photoisomerization in bridged azobenzene

The Journal of Chemical Physics, 2012
The photoisomerization mechanisms of bridged azobenzene are investigated by means of surface hopping dynamics simulations based on the Zhu-Nakamura theory. In the geometry optimizations and potential energy surface calculations, four minimum-energy conical intersections between the ground state and the lowest excited state are found to play important ...
Ai-Hua, Gao, Bin, Li, Pei-Yu, Zhang, Ke-Li, Han   +3 more
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Self-Directed Assembly of Photoactive Hybrid Silicates Derived from an Azobenzene-Bridged Silsesquioxane

Journal of the American Chemical Society, 2002
Hybrid silicate materials derived from organo-bridged silsesquioxane precursors, RO3-Si-R'-Si-OR3, where R and R' are organic ligands, represent a remarkably diverse class of nanocomposites capable of forming both Si-O-Si and Si-C-Si bonds with molecular scale homogeneity.
Liu, N., Yu, Kui, Smarsly, B., Dunphy, D., Jiang, Y-B, Brinker, C.   +5 more
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Bridge-atom effects on bidirectional photoisomerization in oxygen-bridged azobenzene

Oxygen-bridged azobenzene has emerged as an attractive scaffold for reversible azo photoswitches and molecular solar thermal storage because it combines long-wavelength photoresponse with strong conformational constraint. For such systems, whether the absorbed energy is converted into productive isomerization or dissipated through nonradiative decay ...
Xiaoqian Li, Yuying Liu, Zhijie Xu, Aihua Gao, Shuyang Bao, Li Zhao   +5 more
openaire   +2 more sources

Synthetic Photoswitchable Neurotransmitters Based on Bridged Azobenzenes [PDF]

Organic Letters, 2019
Photoswitchable neurotransmitters of ionotropic kainate receptors were synthesized by tethering a glutamate moiety to disubstituted C2-bridged azobenzenes, which were prepared through a novel methodology that allows access to diazocines with higher yields and versatility.
Gisela Cabré, Aida Garrido-Charles, Àngels González-Lafont, Widukind Moormann, Daniel Langbehn, David Egea, José M. Lluch, Rainer Herges, Ramon Alibés, Félix Busqué, Pau Gorostiza, Jordi Hernando   +11 more
openaire   +5 more sources

Photocontrolled lactide ROP by the light-regulated release of potassium acetate from an azobenzene-bridged crown ether [PDF]

, 2021
peer reviewedAn azobenzene-bridged 15-crown-5 ether (1) was successfully used as a photoswitchable cocatalyst for modulating the catalytic activity of potassium acetate (KOAc) in the ring-opening polymerization (ROP) ofl-lactide (l-LA) when initiated ...
{"lastName":"Coulembier", "firstNames":"Olivier","affiliations":["Université de Mons - UMONS \u003e Faculté des Sciences \u003e Service des Matériaux Polymères et Composites"],"ids":["SC:6507398552""OR:0000-0001-5753-7851"]}, De Roover, Quentin, Vucko, Timothé, {"lastName":"Vincent", "firstNames":"Stéphane P.","affiliations":["Unité de Chimie Organique, Université de Namur ASBL, Namur, Belgium"],"ids":["SC:7202465314""OR:0000-0001-6258-9058"]}, {"lastName":"De Winter", "firstNames":"Julien","affiliations":["Université de Mons - UMONS \u003e Faculté des Sciences \u003e Service de Synthèse et spectrométrie de masse organiques","Université de Mons - UMONS \u003e Faculté des Sciences \u003e Service de Synthèse et spectrométrie de masse organiques","Université de Mons - UMONS \u003e Faculté des Sciences \u003e Synthèse et spectrométrie de masse organiques","Université de Mons - UMONS \u003e Faculté des Sciences \u003e Synthèse et spectrométrie de masse organiques"],"ids":["SC:57219120973""OR:0000-0003-3429-5911"]}, Quentin De Roover, Julien De Winter, Olivier Coulembier, Stéphane P. Vincent, Timothé Vucko   +9 more
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A freestanding photoswitchable aero-polymer with an incorporated bridged azobenzene: 3D structure, photoinduced motion, biocompatibility and potential application as photomechanical cell scaffold [PDF]

, 2023
Photoswitchable polymers are of great interest for a variety of applications such as optical data storage, functional membranes and photoactuators.
Christine, Arndt, Thomas, Strunskus, Daniel, Hagenbusch, Stefan, Rehders, Maximilian H., Burk, Lukas, Pott, Jonas, Drewes, Margarethe, Hauck, Franz, Faupel, Torge, Hartig, Stefan, Schröder, Rainer, Herges, Rainer, Adelung, Christine, Selhuber-Unkel, Fabian, Schütt   +14 more
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Through-Space Magnetic Interaction of cis-Azobenzene Biradical

, 2023
Two chiral PROXYL groups bridged with azobenzene show the change of the magnetic properties with the trans-cis photoisomerization of the azobenzene moiety.
Yoshiaki Uchida (1411531), Rui Tamura (1591780), Kenjiro Hino (14492664), Tatsuhisa Kato (1438594)   +3 more
core   +1 more source

Highly Efficient Reversible Z−E Photoisomerization of a Bridged Azobenzene with Visible Light through Resolved S₁(nπ*) Absorption Bands

, 2016
Highly Efficient Reversible Z−E Photoisomerization of a Bridged Azobenzene with Visible Light through Resolved S1(nπ*) Absorption ...
Hendrikje Neumann (2340658), Falk Renth (2340664), Christian Näther (1518874), Friedrich Temps (1995211), Bengt Buchheim-Stehn (2340661), Ron Siewertsen (2340655), Rainer Herges (1393300)   +6 more
core   +2 more sources

Identifying the Azobenzene/Aniline reaction intermediate on TiO2-(110) : a DFT Study [PDF]

, 2013
Density functional theory (DFT) calculations, both with and without dispersion corrections, have been performed to investigate the nature of the common surface reaction intermediate that has been shown to exist on TiO2(110) as a result of exposure to ...
Robinson, Jim, Dr., Woodruff, D. P., Bradley, M. K. (Matthew K.)   +2 more
core   +1 more source