Pyrazino[2,3‐f][1,10]phenanthroline Derivatives for Oxygen‐Tolerant Dual Photoredox/Copper Catalyzed Atom Transfer Radical Polymerization with Ultra‐low Catalyst Dosage

Chinese Journal of Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

Comprehensive Summary Substantial progress has been made over recent years in visible light‐driven dual photoredox/copper catalyzed atom transfer radical polymerization (photo‐ATRP) through the design of photocatalysts (PCs) and optimization reaction conditions. However, it remains challenging to achieve efficient photo‐ATRP with low loadings both photocatalyst copper(II). In this study, two donor‐acceptor organic PCs based on pyrazino[2,3‐ f ][1,10]phenanthroline were successfully used Cu(II)‐mediated photo‐ATRP. These exhibit excellent light absorption capabilities thermally activated delayed fluorescence (TADF) properties. Under blue irradiation, facilitated highly oxygen‐tolerant an extremely catalyst loading (50 ppb). This system demonstrated a broad applicability various monomers, achieving successful methacrylates, acrylates, styrene. Additionally, large scale (250 mL) was achieved, resulting narrow molecular weight polymers high monomer conversions chain‐end fidelity. work provides in‐depth investigation into regulatory process photo‐ATRP, offering new insights intricate mechanism oxygen tolerance.

Язык: Английский

Construction of BODIPY-based triangular metallacycles with tunable photosensitization efficiency

Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 110835 - 110835

Опубликована: Янв. 1, 2025

Язык: Английский