Carbazole-fused coumarin based oxime esters (OXEs): efficient photoinitiators for sunlight driven free radical photopolymerization

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(17), P. 6881 - 6891

Published: Jan. 1, 2023

The use of sunlight to initiate free radical polymerization under air is a key challenge.

Language: Английский

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Recent advances on diaryliodonium-based monocomponent photoinitiating systems

European Polymer Journal, Journal Year: 2023, Volume and Issue: 195, P. 112193 - 112193

Published: June 3, 2023

Language: Английский

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Thiol‐X Chemistry: A Skeleton Key Unlocking Advanced Polymers in Additive Manufacturing

Macromolecular Materials and Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Abstract Using additive manufacturing (AM) technologies for the fabrication of advanced polymeric objects is a logical progression to realize their potential within engineering applications that demand complex geometries. Thiol‐X chemistry has presented itself as diverse and invaluable toolkit accomplish such, satisfying both processing requirements properties desired fabricate range using variety AM technologies. The “click” nature many thiol‐X reactions, mechanisms polymerization, functional group tolerance orthogonality, desirable achievable with presents synergistic opportunity few other chemistries can broadly facilitate. As result, use gained rapid traction in recent years it now case are being viewed two sides same coin, whereby scope limitations whole system appreciated. This review highlights advancements, status, scope, opportunities achieve polymers by critically examining structure‐property‐processing‐performance relationships between different various

Language: Английский

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Recent advances on naphthoquinone-based photoinitiators of polymerization

European Polymer Journal, Journal Year: 2023, Volume and Issue: 193, P. 112120 - 112120

Published: May 6, 2023

Language: Английский

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High Photoinitiating Efficiency of Benzothioxanthene‐Based Oxime Esters in Photopolymerization via Photocleavage and/or Single Electron Transfer under Visible Light and Sunlight

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(35)

Published: June 15, 2024

In this work, six benzothioxanthene-based oxime esters were employed as photoinitiators for photopolymerization under visible light (LED) and sunlight. Their abilities to behave Type I by mean of a photocleavage mechanism but also in multicomponent photoinitiating systems with an iodonium salt (through electron transfer mechanism) both explored the different structures. Due their broad absorption spectra tailing up 600 nm, properties systematically tested excitation low-intensity LED at wavelengths 405 nm 450 nm. Additionally, parallel polymerization tests done artificial light, investigated solar displayed high reactivity France (Western Europe) even winter conditions. For best candidates i.e. most reactive structures, direct laser write experiments carried out, evidencing interest these

Language: Английский

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Triphenylamine based oxime ester photoinitiator for LED-induced free radical photopolymerization and 3D printing

European Polymer Journal, Journal Year: 2024, Volume and Issue: 215, P. 113254 - 113254

Published: June 19, 2024

Language: Английский

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Recent advances on phenothiazine-based oxime esters as visible light photoinitiators of polymerization

European Polymer Journal, Journal Year: 2023, Volume and Issue: 202, P. 112597 - 112597

Published: Nov. 18, 2023

Language: Английский

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High Photoinitiating Efficiency of Benzothioxanthene‐based Oxime Esters in Photopolymerization via Photocleavage and/or Single Electron Transfer under Visible Light and Sunlight

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(35)

Published: June 15, 2024

Abstract In this work, six benzothioxanthene‐based oxime esters were employed as photoinitiators for photopolymerization under visible light (LED) and sunlight. Their abilities to behave Type I by mean of a photocleavage mechanism but also in multicomponent photoinitiating systems with an iodonium salt (through electron transfer mechanism) both explored the different structures. Due their broad absorption spectra tailing up 600 nm, properties systematically tested excitation low‐intensity LED at wavelengths 405 nm 450 nm. Additionally, parallel polymerization tests done artificial light, investigated solar displayed high reactivity France (Western Europe) even winter conditions. For best candidates i.e. most reactive structures, direct laser write experiments carried out, evidencing interest these

Language: Английский

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Multibranched triarylamine end-capped oxime esters as visible-light absorbing type I photoinitiators for free radical photopolymerization

Polymer Chemistry, Journal Year: 2023, Volume and Issue: 14(30), P. 3421 - 3432

Published: Jan. 1, 2023

Compounds (TPA-DP, TPA-CZ and TPA-PT) had been developed synthesized, in which three electron-donating groups (diphenylamine, carbazole, or phenothiazine) are connected to the 4,4′-positions of triphenylamine form triarylamine oxime ester photoinitiators.

Language: Английский

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Recent Advances in Monocomponent Visible Light Photoinitiating Systems Based on Sulfonium Salts

Polymers, Journal Year: 2023, Volume and Issue: 15(21), P. 4202 - 4202

Published: Oct. 24, 2023

During the last decades, multicomponent photoinitiating systems have been focus of intense research efforts, especially for design visible light systems. Although highly reactive three-component and even four-component designed, complexity to elaborate such mixtures has incited researchers monocomponent Type II photoinitiators. Using this approach, photosensitizer radical/cation generator can be combined within a unique molecule, greatly simplifying elaboration photocurable resins. In field, sulfonium salts are remarkable photoinitiators but these structures lack absorption in range. Over years, various structural modifications carried out order redshift their absorptions region. work, an overview different activable under reported date is proposed.

Language: Английский

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