High‐Performance Sunlight‐Induced Polymerized Hydrogels and Applications in 3D and 4D Printing DOI Creative Commons
Ji Feng, Zheng Liu, Tong Gao

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

Abstract Currently, there are only few reports on water‐soluble photoinitiating systems. In this study, a highly organic dye i.e. sodium (E)‐3,3′‐((4‐(2‐(3‐methylbenzo[ d ]thiazol‐3‐ium‐2‐yl)vinyl)phenyl)azanediyl)dipropionate iodide, was synthesized and served as photoinitiator. Notably, initiator, at low concentration of just 0.01 wt%, demonstrates high photoinitiation ability, with some hydrogel formulations achieving nearly 100% double bond conversion under sunlight. Photopolymerization kinetics were monitored using Real‐Time Fourier Transform Infrared. To explore the complex chemical principles radical polymerization, UV‐visible absorption fluorescence spectroscopy, steady‐state photolysis, quenching experiments cyclic voltammetry employed to gain comprehensive understanding photochemical mechanism involved. Additionally, several characteristics hydrogels also investigated water content, swelling, volume swelling. addition their excellent capabilities, developed in study supported 3D printing. objects smooth surface spatial resolution could be successfully printed direct laser writing. The fabricated reversibly change shape response (adding or removing water), enabling successful 4D printing behavior. Furthermore, efficient ability opens new avenues for sunlight‐polymerized potential applications bioprinting.

Language: Английский

High Photoinitiating Efficiency of Benzothioxanthene‐Based Oxime Esters in Photopolymerization via Photocleavage and/or Single Electron Transfer under Visible Light and Sunlight DOI Creative Commons
Yijun Zhang, Bin Song, Zheng Liu

et al.

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

Citations

5
High Photoinitiating Efficiency of Benzothioxanthene‐based Oxime Esters in Photopolymerization via Photocleavage and/or Single Electron Transfer under Visible Light and Sunlight DOI Creative Commons
Yijun Zhang, Bin Song, Zheng Liu

et al.

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

Citations

4
2,3-Diaminonaphthalene-1,4-dione: Versatile precursor for the synthesis of molecular systems DOI
Sherif M. H. Sanad

Synthetic Communications, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 24

Published: Dec. 3, 2024

The current review investigates the reactivity of 2,3-diaminonaphthalene-1,4-dione in production substituted and annulated 1,4-naphthoquinones. 2,3-Diaminonaphthalene-1,4-dione has two adjacent amino functions, allowing for reactions with a variety electrophilic centers. They are regarded as effective chemical reagents capable producing wide range heterocyclic derivatives biological applications favorable electrochemical properties. We reviewed all available papers on synthesis 1,4-naphthoquinones via various electrophiles. This includes reports which is annulated, yielding heterocycles mono-, bi-, tri-, tetracyclic rings. divided into sections based type annulation system number heteroatoms each system.

Language: Английский

Citations

4
Photopolymerization initiated by aggregation-induced emission (AIE) dyes: Towards design of fluorescent photocatalysts with hybridized excited state DOI
Ke Sun, Wenlong Tang, Mingyang Wu

et al.

European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113750 - 113750

Published: Jan. 1, 2025

Language: Английский

Citations

0
Recent advances on naphthoquinone-imidazolyl and naphthoquinone-thiazolyl derivatives as photoinitiators of photopolymerization DOI
Frédéric Dumur

European Polymer Journal, Journal Year: 2024, Volume and Issue: 219, P. 113401 - 113401

Published: Aug. 27, 2024

Language: Английский

Citations

3
High‐Performance Sunlight‐Induced Polymerized Hydrogels and Applications in 3D and 4D Printing DOI Creative Commons
Ji Feng, Zheng Liu, Tong Gao

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

Abstract Currently, there are only few reports on water‐soluble photoinitiating systems. In this study, a highly organic dye i.e. sodium (E)‐3,3′‐((4‐(2‐(3‐methylbenzo[ d ]thiazol‐3‐ium‐2‐yl)vinyl)phenyl)azanediyl)dipropionate iodide, was synthesized and served as photoinitiator. Notably, initiator, at low concentration of just 0.01 wt%, demonstrates high photoinitiation ability, with some hydrogel formulations achieving nearly 100% double bond conversion under sunlight. Photopolymerization kinetics were monitored using Real‐Time Fourier Transform Infrared. To explore the complex chemical principles radical polymerization, UV‐visible absorption fluorescence spectroscopy, steady‐state photolysis, quenching experiments cyclic voltammetry employed to gain comprehensive understanding photochemical mechanism involved. Additionally, several characteristics hydrogels also investigated water content, swelling, volume swelling. addition their excellent capabilities, developed in study supported 3D printing. objects smooth surface spatial resolution could be successfully printed direct laser writing. The fabricated reversibly change shape response (adding or removing water), enabling successful 4D printing behavior. Furthermore, efficient ability opens new avenues for sunlight‐polymerized potential applications bioprinting.

Language: Английский

Citations

0