Results 201 to 210 of about 62,736 (263)

Efficient Green Light‐Induced Photoclick Reactions Enabled by Triplet–Triplet Annihilation Photon Upconversion

open access: yesAngewandte Chemie, EarlyView.
A general strategy for 9,10‐phenanthrenequinone‐electron‐rich alkene (PQ‐ERA) photoclick reactions via triplet–triplet annihilation upconversion (TTA‐UC) under low‐intensity green light is reported. A TTA‐UC system of PdOEP (sensitizer) and DPA (annihilator) mixed with reactants generates UV/blue photons overlapping the absorption of PQ derivatives ...
Qingxin Luan   +7 more
wiley   +1 more source

Extending El Sayed's Rule by 1(n,π*)–3(n,π*) Rotation via Intramolecular Secondary Interaction Enables Room‐Temperature Circularly Polarized Phosphorescence in Solution

open access: yesAngewandte Chemie, EarlyView.
Weak but skilled: Our results highlight the crucial role of intramolecular secondary interactions to induce an efficient ISC between formally identical 1(n,π*) and 3(n,π*) states in chiral thionated phthalimide derivatives. This unprecedented type of inter‐system crossing (ISC) extends the usual thinking of the El‐Sayed principle and enables the ...
Oscar Charpentier   +9 more
wiley   +1 more source

Sequential Design of Activatable Photosensitizers for Ablation of Glioma Cells in Brain Cancer Tissues

open access: yesAngewandte Chemie, EarlyView.
Gal‐SeNBD‐oleamide is an activatable photosensitizer (PS) with efficient uptake and selective, β‐galactosidase‐triggered activation in cancer cells, enabling efficient photodynamic ablation of glioma cells directly in brain tissue slices from mouse preclinical models and human glioblastoma patients.
Utsa Karmakar   +18 more
wiley   +1 more source

Redox‐Modulated σ‐Bond Reactivity in a Radical‐Anion Dimer

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 44, 26 October 2026.
A radialene‐based radical anion σ‐dimer comprising an elongated C‐C bond exhibits orthogonal stimuli responsiveness. Homolytic cleavage of the dimer to the radical state is triggered by mechanical strain and high temperature. Dimer scission is also achieved via oxidation, resulting in formation of neutral radialenes.
Sushil Ranjan Bhatta   +8 more
wiley   +1 more source

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