Results 81 to 90 of about 31,710 (279)

Shedding Light on the Photoisomerization Pathway of Donor–Acceptor Stenhouse Adducts

Journal of the American Chemical Society, 2017
Donor–acceptor Stenhouse adducts (DASAs) are negative photochromes that hold great promise for a variety of applications. Key to optimizing their switching properties is a detailed understanding of the photoswitching mechanism, which, as yet, is absent ...
M. di Donato, Michael M. Lerch, A. Lapini, Adèle D. Laurent, Alessandro Iagatti, L. Bussotti, Svante P. Ihrig, M. Medved’, D. Jacquemin, W. Szymański, W. Buma, P. Foggi, B. Feringa   +12 more
semanticscholar   +1 more source

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

Advanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source

Effect of a =X-NH-Fragment, (X = C, N), on Z/E Isomerization and ON/OFF Functionality of Isatin Arylhydrazones, ((Arylamino)Methylene)Indolin-2-Ones and Their Anions

Molecules, 2020
The subject of this work was the study of thermally and photochemically stimulated Z ↔ E isomerization and hydrazo ↔ azo tautomerism of Z- and E-isomers of isatin arylhydrazones and ((arylamino)methylene)indolin-2-ones and their anions. Using NMR, UV-Vis
Pavol Tisovský, Klaudia Csicsai, Jana Donovalová, Róbert Šandrik, Róbert Sokolík, Anton Gáplovský   +5 more
doaj   +1 more source

Excited-State Dynamics of All the Mono-cis and the Major Di-cis Isomers of β-Apo-8′-Carotenal as Revealed by Femtosecond Time-Resolved Transient Absorption Spectroscopy

Molecules, 2023
Cis isomers of carotenoids play important roles in light harvesting and photoprotection in photosynthetic bacteria, such as the reaction center in purple bacteria and the photosynthetic apparatus in cyanobacteria.
Kota Horiuchi, Chiasa Uragami, Ruohan Tao, Daisuke Kosumi, Richard J. Cogdell, Hideki Hashimoto   +5 more
doaj   +1 more source

Azobenzene photoisomerization probes cell membrane viscosity

Physical Chemistry Chemical Physics, 2022
We demonstrate that the isomerization reaction of a membrane-targeting azobenzene can probe the lipid membrane viscosity.
Magni A., Bondelli G., Paterno G. M., Sardar S., Sesti V., D'Andrea C., Bertarelli C., Lanzani G.   +7 more
openaire   +3 more sources

Novel 3D‐Printed Biophotonic Scaffold Displaying Luminescence under Near‐Infrared Light for Photopharmacological Activation and Biological Signaling Compound Release

Advanced Healthcare Materials, EarlyView.
Despite significant efforts in developing novel biomaterials to regenerate tissue, only a few of them have successfully reached clinical use. It has become clear that the next generation of biomaterials must be multifunctional. Smart biomaterials can respond to environmental or external stimuli, interact in a spatial‐temporal manner, and trigger ...
Sonya Ghanavati, Ekin Opar, Virginia Alessandra Gobbo, Carlo Matera, Fabio Riefolo, Rossella Castagna, Julien Colombelli, Andrew Draganski, Joshua Baggott, Mika Lastusaari, Pau Gorostiza, Laeticia Petit, Jonathan Massera   +12 more
wiley   +1 more source

Molecular Solar Thermal Fuels with High Energy Density Based on Azobenzene Derivatives

Energies
Molecular solar thermal fuels (MOSTs) based on azobenzene derivatives have become one of the research hotspots for solar thermal conversion and storage due to their excellent cycling stability, resistance to photodegradation, and the capability to ...
Yan Jiang, Rui Liu, Yupeng Guo, Hai Wang, Wen Luo, Jin Huang   +5 more
doaj   +1 more source

Anethole Isomerization and Dimerization Induced by Acid Sites or UV Irradiation

Molecules, 2010
The formation of cis-anethole and various dimers as a result of the exposure of trans-anethole to microporous solid acids (dealuminated HY zeolites), or UV-Vis irradiation was established by means of high resolution gas chromatography coupled to mass ...
Elena Stashenko, Jairo René Martínez, Hans T. Castro   +2 more
doaj   +1 more source

Cyclic Photoisomerization of Azobenzene in Atomistic Simulations: Modeling the Effect of Light on Columnar Aggregates of Azo Stars

Molecules, 2021
This computational study investigates the influence of light on supramolecular aggregates of three-arm azobenzene stars. Every star contains three azobenzene (azo) moieties, each able to undergo reversible photoisomerization.
Markus Koch, Marina Saphiannikova, Olga Guskova   +2 more
doaj   +1 more source

Simulating conical intersection dynamics in the condensed phase with hybrid quantum master equations

, 2019
We present a framework for simulating relaxation dynamics through a conical intersection of an open quantum system that combines methods to approximate the motion of degrees of freedom with disparate time and energy scales.
Limmer, David T., Schile, Addison J.
core   +1 more source