Results 21 to 30 of about 5,692 (237)
Spiropyran-based reversible, light-modulated sensing with reduced photofatigue [PDF]
, 2009 Switchable materials have tremendous potential for application in sensor development that could be applied to many fields. We are focusing on emerging area of wireless sensor networks due to the potential impact of this concept in society.
Aleksandar Radu +45 more
core +1 more source
Molecules, 2022 The expression of genes of interest (GOI) can be initiated by providing external stimuli such as temperature shifts and light irradiation. The application of thermal or light stimuli triggers structural changes in stimuli-sensitive biomolecules within ...
Jongdoo Choi +3 more
doaj +1 more source
Light-Driven Charge Transport and Optical Sensing in Molecular Junctions
Nanomaterials, 2022 Probing charge and energy transport in molecular junctions (MJs) has not only enabled a fundamental understanding of quantum transport at the atomic and molecular scale, but it also holds significant promise for the development of molecular-scale ...
Chaolong Tang +4 more
doaj +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 +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. +7 more
openaire +3 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 +63 more
core +4 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 +9 more
openaire +6 more sources
Enhancing tetraphenylethene cyclization as photoswitch
Smart Molecules, 2023 Tetraphenylethene (TPE), a star building block with promising aggregation‐induced emission, has received much interest. Given that its intramolecular Woodward‐Hoffmann cyclic intermediate instantaneously converts back to the original state within several
Yue Wu +9 more
doaj +1 more source
Azo-dimethylaminopyridine-functionalized Ni(II)-porphyrin as a photoswitchable nucleophilic catalyst
Beilstein Journal of Organic Chemistry, 2020 We present the synthesis and the photochemical and catalytic switching properties of an azopyridine as a photoswitchable ligand, covalently attached to a Ni(II)-porphyrin.
Jannis Ludwig +3 more
doaj +1 more source
Isomerisation of an intramolecular hydrogen-bonded photoswitch:Protonated azobis(2-imidazole) [PDF]
, 2017 Photoisomerisation of protonated azobis(2-imidazole), an intramolecular hydrogen-bonded azoheteroarene photoswitch molecule, is investigated in the gas phase using tandem ion mobility mass spectrometry.
Bieske, Evan J. +3 more
core +2 more sources