Results 21 to 30 of about 6,093 (220)

Short Photoswitchable Antibacterial Peptides

ChemMedChem, 2020
AbstractThree photoswitchable tetrapeptides, based on a known synthetic antibacterial, were designed and synthesized to determine activity against Staphylococcus aureus. Each peptide contains an azobenzene photoswitch incorporated into either the N‐terminal side chain (1), C‐terminal side chain (2), or the C‐terminus (3) to allow reversible switching ...
Yuan Qi Yeoh, John R. Horsley, Jingxian Yu, Steven W. Polyak, Blagojce Jovcevski, Andrew D. Abell   +5 more
openaire   +5 more sources

Azobenzene photocontrol of peptides and proteins [PDF]

, 2016
The last few years have witnessed significant advances in the use of light as a stimulus to control biomolecular interactions. Great efforts have been devoted to the development of genetically encoded optobiological and small photochromic switches. Newly
Allemann, Rudolf, Mart, Robert
core   +1 more source

Emission color tuning and white-light generation based on photochromic control of energy transfer reactions in polymer micelles [PDF]

, 2016
We encapsulate a fluorescent donor molecule and a photochromic acceptor unit (photoswitch) in polymer micelles and show that the color of the emitted fluorescence is continuously changed from blue to yellow upon light-induced isomerization of the ...
Andréasson, Joakim, Bälter, Magnus Å., Guirado, Gonzalo, Hernando, Jordi, Irie, Masahiro, Li, Shiming, Morimoto, Masakazu, Raymo, Françisco M., Tang, Sicheng   +8 more
core   +2 more sources

Azotriptycenes: Photoswitchable Molecular Brakes

Chemistry – A European Journal, 2023
AbstractThe control of molecular motions is a central topic of molecular machine research. Molecular brakes are fundamental building blocks towards such goal as they allow deliberately decelerating specific motions after an outside stimulus is applied. Here we present azotriptycenes as structural framework for light‐controlled molecular brakes.
Stockerl, Willibald J., Reißenweber, Lilli, Gerwien, Aaron, Bach, Nicolai N., Thumser, Stefan, Mayer, Peter, Gschwind, Ruth M., Dube, Henry   +7 more
openaire   +3 more sources

E/Z Molecular Photoswitches Activated by Two-Photon Absorption: Comparison between Different Families

Molecules, 2021
Nonlinear optical techniques as two-photon absorption (TPA) have raised relevant interest within the last years due to the capability to excite chromophores with photons of wavelength equal to only half of the corresponding one-photon absorption energy ...
Marco Marazzi, Cristina García-Iriepa, Carlos Benitez-Martin, Francisco Najera, Antonio Monari, Diego Sampedro   +5 more
doaj   +1 more source

Concentration dependence of thermal isomerization process of methyl orange in ethanol [PDF]

, 2017
The thermal isomerization (TI) rates of methyl orange (MO) and 4-dimethylaminoazobenzene (DMAAB) in ethanol (EtOH) are measured. Usually TI rates of azobenzene dyes are known to be concentration independent.
KINOSHITA Eri, KONNO Yuki, YANO Atsuko, YANO Ryuzi   +3 more
core   +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

Coherent ultrafast torsional motion and isomerization of a biomimetic dipolar photoswitch [PDF]

, 2010
Femtosecond fluorescence up-conversion, UV-Vis and IR transient absorption spectroscopy are used to study the photo-isomerization dynamics of a new type of zwitterionic photoswitch based on a N-alkylated indanylidene pyrroline Schiff base framework (ZW ...
Andrea Cannizzo, Baltuska, Banghart, Ben-Nun, Bredenbeck, Bredenbeck, Burghardt, Changenet-Barret, Chattoraj, Chosrowjan, Chosrowjan, Coto, Dexheimer, Dhar, Dietzek, Dobler, Fuss, González-Luque, Hamm, Hamm, Haran, Hou, Jan Helbing, Julien Briand, Julien Réhault, Jérémie Léonard, Kahan, Kandori, Kobayashi, Larsen, Lednev, Levine, Lossau, Lumento, Majed Chergui, Massimo Olivucci, Mathies, Migani, Myers, Nägele, Olivier Bräm, Peteanu, Pollard, Prokhorenko, Rudolph-Bohner, Schoenlein, Schoenlein, Shinkai, Sinicropi, Stefan Haacke, Sussman, Szarka, Tittor, Toniolo, Ulysse, Vengris, Vinizio Zanirato, Vogt, Wang, Wang, Webber, Zanirato, Zgrablić, Zgrablić   +63 more
core   +4 more sources

Rationally designed azobenzene photoswitches for efficient two-photon neuronal excitation

Nature Communications, 2019
Two-photon absorption capacity of azobenzene photoswitches usually comes with a reduction in thermal stability. Here, the authors developed photoswitches with high two-photon sensitivity and enhanced cis isomer thermal lifetime for the control of ...
Gisela Cabré, Aida Garrido-Charles, Miquel Moreno, Miquel Bosch, Montserrat Porta-de-la-Riva, Michael Krieg, Marta Gascón-Moya, Núria Camarero, Ricard Gelabert, José M. Lluch, Félix Busqué, Jordi Hernando, Pau Gorostiza, Ramon Alibés   +13 more
doaj   +1 more source

Orthogonal photoswitching in a multifunctional molecular system

Nature Communications, 2016
While molecular photoswitches have proven useful in many fields, selective and reversible control over multiple switches is an unsolved challenge. Here, the authors report on a system consisting of two classes of photoswitches that can be addressed ...
Michael M. Lerch, Mickel J. Hansen, Willem A. Velema, Wiktor Szymanski, Ben L. Feringa   +4 more
doaj   +1 more source