Results 131 to 140 of about 3,943 (245)

Switchable molecular tweezers: design and applications

Beilstein Journal of Organic Chemistry
Switchable molecular tweezers are a unique class of molecular switches that, like their macroscopic analogs, exhibit mechanical motion between an open and closed conformation in response to stimuli.
Pablo Msellem, Maksym Dekthiarenko, Nihal Hadj Seyd, Guillaume Vives   +3 more
doaj   +1 more source

The Radical Chemistry of 2,3‐Diguanidinopyridines: Coordination and Visible‐Light Photochemistry

Chemistry – A European Journal, Volume 32, Issue 41, 3 November 2026.
Substitution at the pyridine core of 2,3‐diguanidinopyridines was used to develop novel redox‐active molecules with three interconvertible redox states. They are applied as redox‐active ligands in coordination chemistry. Visible‐light irradiation of the pyridine N‐benzylated molecules leads to photoconversion to a higher‐energetic isomer.
Hanna Koepcke, Etienne Engels, Elisabeth Kaifer, Hans‐Jörg Himmel   +3 more
wiley   +1 more source

Understanding X-ray-induced isomerisation in photoswitchable surfactant assemblies

Beilstein Journal of Organic Chemistry
Dynamic, responsive materials can be built using photosurfactants (PS) that self-assemble into ordered nanostructures, such as micelles or liquid crystals.
Beatrice E. Jones, Camille Blayo, Jake L. Greenfield, Matthew J. Fuchter, Nathan Cowieson, Rachel C. Evans   +5 more
doaj   +1 more source

Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors

Advanced Science, Volume 13, Issue 61, 3 November 2026.
A MoTe2/WSe2/Cl–SnSe2 unipolar barrier photodetector is demonstrated, in which the WSe2 layer effectively blocks majority‐carrier injection, yielding suppressed dark current and enhanced near‐infrared (NIR) sensing. The device achieves high detectivity, a wide linear dynamic range, and fast response under 1310 nm illumination, enabling high‐fidelity 3D
Jung Pyo Hong, Sang‐Jun Kim, Jisu Jang, Je‐Jun Lee, Seong‐Jun Han, Eungseon Yeon, Jung Woo Kim, Jongtae Ahn, Sang Yeon Kim, Hyun Woo Ko, Sunghyun Han, Seung Ah Lee, Paul Hongsuck Seo, Young‐Woo Suh, Kimoon Lee, Gunuk Wang, Dong‐Guang Zheng, Sunghee Hong, Sangin Hahn, Seon Kyu Yoon, Min‐Chul Park, Do Kyung Hwang   +21 more
wiley   +1 more source

On the Molecular Origin of Photoinduced Dimerization of 3‐ and 4‐Phenylcoumarin

ChemPhotoChem, Volume 10, Issue 11, November 2026.
Two isomers with different photochemistry: Transient absorption spectroscopy and TD‐DFT show that 3‐phenyl‐7‐methoxycoumarin reaches a long‐lived triplet state after planarization of its phenyl ring and dimerizes, whereas 4‐phenyl‐7‐methoxycoumarin returns to the ground state within picoseconds along the lactone C–O coordinate.
Pavel V. Kolesnichenko, Sebastian Inacker, Nils Oberhof, Kilian Rösel, Andreas Dreuw, Norbert A. Hampp, Tiago Buckup   +6 more
wiley   +1 more source

Machine Learning–Enhanced Fluorescence Cryptography with NADH‐Responsive Polymer Dots

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 6, November 2026.
This study presents a smart anticounterfeiting system using semiconducting polymer dots (Pdots) that exhibit tunable fluorescence responses to NADH. By integrating these dynamic optical signals with machine learning–based decoding, the work establishes a secure and intelligent encryption platform, showing a novel strategy that links chemical sensing ...
Zhengkun Zhan, Mingyue Gong, Zirui Zeng, Hangyu Liu, Xiaoliang Li, Zhuxin Dong, Xiaoju Men, Haobin Chen   +7 more
wiley   +1 more source

Mechanical Caging of Nucleic Acids Enabled by Light‐Activated Synthetic Molecular Motors

Angewandte Chemie, Volume 138, Issue 42, 12 October 2026.
A synthetic light‐driven molecular motor imposes mechanical constraints on nucleic acids, enabling “mechanical caging” as a new mode to regulate DNA structure and function through mechanical input rather than chemical masking. ABSTRACT Control over nucleic acid activity is central to biotechnology and therapeutic development.
Yuchen Ma, Erika McCarthy, N. Sanjeeva Murthy, Cameron McGovern, Zhenyu Han, Şölen Ekesan, Subhajit Nandi, Advik Sirimarapu, Wilma K. Olson, Darrin M. York, Yuwei Gu   +10 more
wiley   +2 more sources

Two‐Dimensional Hydrazopyridinium Lead Iodide Perovskite Photodetectors With Broadband Sensitivity and Photoconductive Gain

Small Science, Volume 6, Issue 11, November 2026.
Hydrazopyridinium lead iodide combines near‐linear Pb─I─Pb bonding with a 2.13 eV bandgap in a two‐dimensional Dion–Jacobson perovskite. Spacer‐controlled crystal engineering enables broadband UV‐to‐visible photodetection with enhanced deep‐UV sensitivity.
Avija Ajayakumar, Akash Suresh, Andrzej Sławek, Anandhu Gopan, Chinnadurai Muthu, Amarjith V. Dev, Ashly Merlin Thomas, Anusree Aravindakshan, Konrad Szaciłowski, Chakkooth Vijayakumar   +9 more
wiley   +1 more source

Rapid Access to Photoswitchable RNA Binders: Fluorination Enhances Protein Rescue by Exon Inclusion

Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
An adaptable approach, many light‐switchable RNA binders. We report a versatile strategy for rapidly synthesizing photoswitchable RNA binders. The ligands can target SMN2 pre‐mRNA, restoring the levels of the corresponding protein by exon‐inclusion rescue.
Lei Zhang, Nemanja Djokovic, Alexander Herr, Anna Wacker, Emily Swanson Hay, Daniel Santana, Amanda E. Hargrove, Harald Schwalbe, Katarina Nikolic, Frank Abendroth, Olalla Vázquez   +10 more
wiley   +1 more source

Multi‐state Photoswitching in Thienoquinoid‐Based Fluorescent Trithiophenes

Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.
A methine‐bridged trithiophene with a thienoquinoid core undergoes photoisomerization of both C═C bonds, affording three geometrical isomers in a ratio controlled by the irradiation wavelength. Despite full π‐conjugation, the system retains fluorescence, enabling wavelength‐addressable multi‐state switching with luminescent readout.
Rio Nishimura, Stefan Hecht, Shohei Saito, Ken‐ichi Yamashita   +3 more
wiley   +1 more source