Results 81 to 90 of about 4,387 (184)

Near Infrared Photoswitching by Direct Excitation—A Next Frontier

Angewandte Chemie International Edition, EarlyView.
Molecular photoswitches finally enter the spectral realm of near‐infrared for their direct excitation. This minireview summarizes the current state‐of‐the‐art, the design principles for achieving such low‐energy light responsiveness, and the unique applications that are unlocked by it.
Diptiprava Sahoo, Elias Ciekalski, Henry Dube   +2 more
wiley   +1 more source

All-Visible-Light-Activated Diarylethene Photoswitches

Molecules
Photochromic compounds have attracted much attention for their potential applications in photo-actuators, optoelectronic devices and optical recording techniques.
Ruiji Li, Tao Ou, Li Wen, Yehao Yan, Wei Li, Xulong Qin, Shouxin Wang   +6 more
doaj   +1 more source

Photoswitching of the Two‐Photon Absorption of Donor‐Acceptor Substituted Dithienylethenes

ChemistryEurope
In this work the structural and electronic integration of push–pull systems with photoactivatable dithienylethenes (DTEs) is demonstrated. The light‐induced 6π‐electrocyclization of two asymmetrically substituted DTEs is used to conjugate an electron ...
Francisco G. Blandón‐Cumbreras, Marc Villabona, Julia Osmólska, Elizaveta F. Petrusevich, David B. Guzmán Ríos, Robert Zaleśny, Joanna Olesiak‐Bańska, Jordi Hernando, Uwe Pischel   +8 more
doaj   +1 more source

Crossing the Threshold: Using Photostationary States to Control Supramolecular Polymerisation

Angewandte Chemie International Edition, EarlyView.
Intermediate photostationary states regulate the concentration of a polymerisation‐active monomer. Once the nucleation threshold is crossed, small wavelength‐dependent changes in isomer composition are amplified into a non‐linear supramolecular assembly response.
Deepu George, Jiarong Wu, Leo Greb, Vladimir Stepanenko, Aidan Izuagbe, Lutz Nuhn, Frank Würthner, Jake L. Greenfield   +7 more
wiley   +1 more source

Introduction to photoswitches and photopharmacology

Martina Cacciarini, G. Andrew Woolley, Wiktor Szymanski and Nadja A. Simeth introduce the Organic & Biomolecular Chemistry and RSC Medicinal Chemistry cross-journal themed collection on ‘Photoswitches and Photopharmacology’
Woolley, G. Andrew, Simeth, Nadja A., Szymanski, Wiktor, Cacciarini, Martina, Woolley, G. Andrew,, Cacciarini, Martina,, Szymanski, Wiktor,, Simeth, Nadja A.,   +7 more
core   +1 more source

Catalysis by a Metastable Photoswitchable Cage

Angewandte Chemie International Edition, EarlyView.
A self‐assembled heteroleptic cage is formed by isomerizing a photoswitchable ligand to its metastable Z‐isomeric form (Z‐1) using green light and combining with a non‐switchable ligand (2) and palladium(II) ions. The metastable [Pd2(Z‐1)2(2)2]4+ cage is an out‐of‐equilibrium self‐assembled catalyst, and can be reversibly assembled and disassembled ...
Simona S. Capomolla, Christopher M. Leonhardt, Samina Rasheed, Jake P. Violi, William A. Donald, Paul J. Lusby, Jonathon E. Beves   +6 more
wiley   +1 more source

Triptycene‐Based Tripodal Molecular Platforms: A Comparative Study of Photoswitchable Langmuir–Blodgett Films on Metallic and Nonmetallic Surfaces

Chemistry – A European Journal, EarlyView.
A modular triptycene‐based platform enables the preparation of Langmuir–Blodgett monolayers of structurally diverse molecular photoswitches on quartz and gold. Surface‐sensitive characterization and optical spectroscopy demonstrate that the intrinsic switching behavior is retained after surface immobilization. ABSTRACT Photoswitchable molecular systems
Eva Kaletová, Katarina Majerová Varga, Carina Santos Hurtado, Guillaume Bastien, Milan Mašát, Zdeněk Bastl, Jiří Kaleta   +6 more
wiley   +1 more source

High Fatigue‐Resistant Photoswitches Based on iridium(III)‐DTE Systems

Chemistry – A European Journal, EarlyView.
Coordination to iridium(III) enhances fatigue resistance over multiple photoswitching cycles in diarylethenes. This metal coordination modulates photoresponse relative to the free ligands under identical irradiation conditions, opening new avenues for practical applications.'' ABSTRACT A series of four differently substituted nonsymmetrical ...
Ariadna Pazos, F. Borja Urquiola, Nícolas Oliveira Decarli, Brice Kauffmann, Gediminas Jonusauskas, Nathan D. McClenaghan, Zoraida Freixa   +6 more
wiley   +1 more source

Synthesis and Characterization of Hemiindigo‐Based Glycoside and Glycomacrocycle

Chemistry – A European Journal, EarlyView.
Glycosyl hemiindigos: we have synthesized hemiindigo‐functionalized glycoside and glycomacrocycle which are photoswitchable under visible light irradiation with high photoconversion yield and fluorescence emission property in acetonitrile. The conformational constrained glycomacrocycle displayed more efficient photoisomerization.
Guilhem Fontaine, Rémi Métivier, Guillaume Laurent, Régis Guillot, Juan Xie   +4 more
wiley   +1 more source

Unconventional Modulation of Diarylethene Photoswitches [PDF]

, 2022
Light can be manipulated and modulated to fit a particular need or application, such as overcoming a spectral mismatch when facilitating a high energy photochemical reaction.
Larsson, Wera
core