Results 51 to 60 of about 5,692 (237)

Visible‐Light Sensitized Isomerization in the Lipid Bilayer Enables Activation of a Transmembrane Transporter

Angewandte Chemie, EarlyView.
A stiff‐stilbene‐based transmembrane anion transporter is isomerized by energy transfer from a ruthenium tris(bipyridyl) photosensitizer in the lipid bilayer. This sensitized isomerization allows activation of chloride transport using visible instead of UV light, without the need to chemically modify the stiff‐stilbene photoswitch.
Julia Villalva, Abhishek Mondal, Willem Marulanda, Jasper E. Bos, Sylvestre Bonnet, Anjali Pandit, Sander J. Wezenberg   +6 more
wiley   +2 more sources

Rational Design of High-Performance Photocontrolled Molecular Switches Based on Chiroptical Dimethylcethrene: A Theoretical Study

Molecules
The reversible photo-induced conformation transition of a single molecule with a [5]helicene backbone has garnered considerable interest in recent studies.
Li Han, Mei Wang, Yifan Zhang, Bin Cui, Desheng Liu   +4 more
doaj   +1 more source

Photoreversible stretching of a BAPTA chelator marshalling Ca2+-binding in aqueous media

Beilstein Journal of Organic Chemistry, 2019
Free calcium ion concentration is known to govern numerous biological processes and indeed calcium acts as an important biological secondary messenger for muscle contraction, neurotransmitter release, ion-channel gating, and exocytosis.
Aurélien Ducrot, Arnaud Tron, Robin Bofinger, Ingrid Sanz Beguer, Jean-Luc Pozzo, Nathan D. McClenaghan   +5 more
doaj   +1 more source

Deciphering Small Molecule Diffusion Parameters Across Light Responsive Polymersome Membranes

Advanced Functional Materials, EarlyView.
Light‐responsive polymersomes bearing donor–acceptor Stenhouse adducts (DASAs) enable programmable control over small‐molecule transport across synthetic membranes. By systematically varying DASA density, an optimal functionalization regime is identified that maximizes light‐gated permeability.
Farzina Matubbar, Beyzanur Kaya, Buse Ipek, Tenzin Dorjee, Shoghik Hakobyan, Mohamed Chami, Julien E. Gautrot, Omar Rifaie‐Graham   +7 more
wiley   +1 more source

An Artificial Molecular Pump Powered by Light

Angewandte Chemie, EarlyView.
A minimal rotaxane‐based supramolecular system functions as a light‐powered molecular pump, capturing macrocycles from solution and concentrating them within an intramolecular compartment. Repeated azobenzene photoisomerization modulates the binding and kinetic barriers of threading and shuttling, generating a photon‐driven energy ratchet that sustains
Federico Nicoli, Chiara Taticchi, Stefano Corra, Marina Tranfić Bakić, Massimo Baroncini, Serena Silvi, Jessica Groppi, Alberto Credi   +7 more
wiley   +2 more sources

Photoswitchable basicity through the use of azoheteroarenes

, 2016
We report an azoheteroarene photoswitchable base, where proton stabilisation in Z isomer is facilitated by neighbouring imidazole rings. A 1.3 unit difference in pKa is observed between the E and Z isomers, which leads to the ability to reversibly ...
Fuchter, MJ, Richardson, RD, Weston, CE
core   +1 more source

Photoswitchable Spasers with a Plasmonic Core and Photoswitchable Fluorescent Proteins [PDF]

Scientific Reports, 2019
AbstractPhotoswitchable fluorescent proteins (PFPs) that can change fluorescence color upon excitation have revolutionized many applications of light such as tracking protein movement, super-resolution imaging, identification of circulating cells, and optical data storage. Nevertheless, the relatively weak fluorescence of PFPs limits their applications
Walter N. Harrington, Marina V. Novoselova, Daniil N. Bratashov, Boris N. Khlebtsov, Dmitry A. Gorin, Ekaterina I. Galanzha, Vladimir P. Zharov   +6 more
openaire   +2 more sources

Photo‐Controlled Antibacterial Drug Release From DASA‐Coated Silica Particles for Improved Treatment of Wound Infections

Advanced Functional Materials, EarlyView.
Synthesis and characterization of light‐responsive donor–acceptor Stenhouse adducts (DASA)‐coated chlorhexidine‐loaded silica nanoparticles. Such a controllable drug‐delivery system enables the release of the antimicrobial drug on demand and in consecutive cycles, thereby maintaining the concentration within the therapeutic window.
Michèle Clerc, Flavia Zuber, Lea Oberhänsli, Yvonne Elbs‐Glatz, Maria M. Miguel, Vera M. Kissling, Qun Ren, Markus Rottmar, Luciano F. Boesel, Giorgia Giovannini   +9 more
wiley   +1 more source

Crystal structures of an azobenzene-bridged aza-18-crown-6 cryptand and a sodium complex thereof

Acta Crystallographica Section E: Crystallographic Communications
We report the single-crystal X-ray diffraction structures of the azobenzene-bridged aza-18-crown-6 cryptand 7,16-[3,3′-(diazene-1,2-diyl)bis(1,3-phenylenecarbonyl)]-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane, C26H32N4O6, 1, and its sodium complex poly[[
Christoph Schwab, Elisabeth Kreidt
doaj   +1 more source

Stochastic Binding Dynamics of a Photoswitchable Single Supramolecular Complex

Advanced Science, 2022
In this work, a real‐time precise electrical method to directly monitor the stochastic binding dynamics of a single supramolecule based on the host‐guest interaction between a cyclodextrin and an azo compound is reported. Different intermolecular binding
Dingkai Su, Shuyao Zhou, Hiroshi Masai, Zihao Liu, Ce Zhou, Chen Yang, Zhizhou Li, Susumu Tsuda, Zhirong Liu, Jun Terao, Xuefeng Guo   +10 more
doaj   +1 more source