Results 31 to 40 of about 30,490 (251)

Facile synthesis of azobenzene‐embedded conjugated macrocycles for optically switchable single‐crystal transistors and tunable supramolecular assemblies

Aggregate, 2023
A series of new π‐conjugated macrocycles (AzoM‐n‐E, n = 1–3) incorporating azobenzene units have been synthesized by a facile strategy in one‐pot reaction.
Dongdong Chang, Xuetao Xiao, Dongyue An, Rong Zhang, Xianyu Song, Yunqi Liu, Yan Zhao, Xuefeng Lu   +7 more
doaj   +1 more source

The still unknown azobenzene - Wavelength dependent photoanisotropy in amorphous azobenzene polymers

Optics Express, 2013
We demonstrate a new type of anisotropy in thin films of amorphous azobenzene polymers induced between 570 and 633 nm, where the absorbance in the film is on the order of 0.05. The anisotropy has a pronounced radial contribution. This observation points to an additional mechanism for the alignment of azobenzene molecules.
Ramanujam, P.S., Jensen, Ole Bjarlin, Tidemand-Lichtenberg, Peter   +2 more
openaire   +3 more sources

Computational Investigation of Tuning the Electron-Donating Ability in Metal-Free Organic Dyes Featuring an Azobenzene Spacer for Dye-Sensitized Solar Cells

Nanomaterials, 2019
A series of donor–π-conjugated spacer–acceptor (D–π–A) organic dyes featuring an azobenzene spacer were designed as chromic dyes and investigated computationally.
Md Al Mamunur Rashid, Dini Hayati, Kyungwon Kwak, Jongin Hong   +3 more
doaj   +1 more source

Tuning the conductance of a molecular switch

, 2007
The ability to control the conductance of single molecules will have a major impact in nanoscale electronics. Azobenzene, a molecule that changes conformation as a result of a trans/cis transition when exposed to radiation, could form the basis of a ...
Cuniberti, Gianaurelio, del Valle, Miriam, Gutierrez, Rafael, Tejedor, Carlos   +3 more
core   +2 more sources

Photoswitchable catalysis by a nanozyme mediated by a lightsensitive cofactor [PDF]

, 2017
The activity of a gold nanoparticle-based catalyst can be reversibly up- and down-regulated by light. Light is used to switch a small molecule between cis- and trans-isomers, which inhibits the catalytic activity of the nanoparticles to different extent.
Martin, Sergio Garcia, Neri, Simona, Pezzato, Cristian, Prins, Leonard Jan   +3 more
core   +2 more sources

Azobenzene‐Oxindole Photochromic Dyads

Angewandte Chemie
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, Marco, Doellerer, Daniel, Feringa, Ben L   +2 more
openaire   +3 more sources

Azobenzene versus 3,3',5,5'-tetra-tert-butyl-azobenzene (TBA) at Au(111): Characterizing the role of spacer groups

, 2010
We present large-scale density-functional theory (DFT) calculations and temperature programmed desorption measurements to characterize the structural, energetic and vibrational properties of the functionalized molecular switch 3,3',5,5'-tetra-tert-butyl ...
Bronner, Christopher, McNellis, Erik R., Meyer, Jorg, Reuter, Karsten, Tegeder, Petra, Weinelt, Martin   +5 more
core   +1 more source

Robust photoregulation of GABA(A) receptors by allosteric modulation with a propofol analogue. [PDF]

, 2012
Photochemical switches represent a powerful method for improving pharmacological therapies and controlling cellular physiology. Here we report the photoregulation of GABA(A) receptors (GABA(A)Rs) by a derivative of propofol (2,6-diisopropylphenol), a ...
Bruzik, Karol S, Dellal, Shlomo S, Feng, Feng, Otis, Thomas S, Pawlowski, Michal, Pepperberg, David R, Qian, Haohua, Xie, An, Yue, Lan   +8 more
core   +2 more sources

Aggregation Control by Multi-stimuli-Responsive Poly(N-vinylamide) Derivatives in Aqueous System

Nanoscale Research Letters, 2017
Thermal and photo responsive copolymer based on N-vinylamide backbone was designed. Methoxyethyl group and azobenzene were selected to improve hydrophilicity and photoresponsive moieties, respectively.
Ryo Kawatani, Yasuhiro Nishiyama, Hironari Kamikubo, Kiyomi Kakiuchi, Hiroharu Ajiro   +4 more
doaj   +1 more source

First-principles GW-BSE excitations in organic molecules

, 2005
We present a first-principles method for the calculation of optical excitations in nanosystems. The method is based on solving the Bethe-Salpeter equation (BSE) for neutral excitations.
Aulbur, Benedict, Bertsch, Burrow, Casida, Cattaneo, Cembran, del Sole, Diau, Doering, Fujino, Gagliardi, Hanke, Hedin, Herzberg, Hugel, Hybertsen, Ichimura, Ishikawa, James R. Chelikowsky, Koch, Lednev, Monti, Murilo L. Tiago, Natalis, Niehaus, Norikane, Nägele, Onida, Rohlfing, Tiago, Vasiliev, Öğüt   +32 more
core   +1 more source