Photocurable Hypervalent Fluorinated Sulfur Containing Thin Films with Remarkable Hardness and Modulus DOI Creative Commons

Kelly A. Bonetti,

Deniz Rende, Michael Murphy

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(18), P. 4413 - 4413

Published: Sept. 17, 2024

Novel tetrafluoro-λ6-sulfanyl-containing oligomers prepared by visible light-promoted addition of 1,4-(bis-chlorotetrafluoro-λ6-sulfanyl) benzene or 1,3-(bis-chlorotetrafluoro-λ6-sulfanyl) to either 1,4-diethynyl the 1,3-diethynyl isomers form hard, stress resistant thin films on spin casting. The isomeric were utilized establish a structure-function relationship for mechanical properties from oligomers. Young’s moduli 145-nm-thick cured could reach 60 GPa. measured hardnesses, between 1.57 and 2.77 GPa, more than double those polymethyl methacrylate (PMMA) films. Curing polymer UV irradiation resulted in coatings that exhibited remarkable hardness modulus with good surface adhesion silicon.

Language: Английский

Polydopamine-based nanoadsorbents for water purification DOI
Mohammad Gholizadeh,

V Haddadi Asl,

Hossein Roghani‐Mamaqani

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159314 - 159314

Published: Jan. 9, 2025

Language: Английский

Citations

3

Recent advances on photoinitiating systems designed for solar photocrosslinking polymerization reactions DOI Creative Commons
Frédéric Dumur

European Polymer Journal, Journal Year: 2023, Volume and Issue: 189, P. 111988 - 111988

Published: March 15, 2023

Language: Английский

Citations

23

Fast Visible‐Light 3D Printing of Conductive PEDOT:PSS Hydrogels DOI Creative Commons
Naroa Lopez‐Larrea, Antonela Gallastegui, Luís Lezama

et al.

Macromolecular Rapid Communications, Journal Year: 2023, Volume and Issue: 45(1)

Published: June 26, 2023

Abstract Functional inks for light‐based 3D printing are actively being searched able to exploit all the potentialities of additive manufacturing. Herein, a fast visible‐light photopolymerization process is showed conductive PEDOT:PSS hydrogels. For this purpose, new Type II photoinitiator system (PIS) based on riboflavin (Rf), triethanolamine (TEA), and poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) investigated visible light acrylic monomers. has dual role by accelerating photoinitiation providing conductivity obtained Using PIS, full monomer conversion achieved in less than 2 min using light. First, PIS mechanism studied, proposing that electron transfer between triplet excited state dye ( 3 Rf*) amine (TEA) catalyzed PEDOT:PSS. Second, series poly(2‐hydroxyethyl acrylate)/PEDOT:PSS hydrogels with different compositions photopolymerization. The presence negatively influences swelling properties hydrogels, but significantly increases its mechanical modulus electrical properties. also tested commercially available Digital Light Processing (DLP) printer (405 nm wavelength), obtaining high resolution 500 µm hole size scaffolds.

Language: Английский

Citations

21

Recent advances on diaryliodonium-based monocomponent photoinitiating systems DOI Creative Commons
Frédéric Dumur

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

Published: June 3, 2023

Language: Английский

Citations

18

Designing unimolecular photoinitiator by installing NHPI esters along the TX backbone for acrylate photopolymerization and their applications in coatings and 3D printing DOI
Yi Zhu, Jingyan Zhang, Yuchao Zhang

et al.

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 35(7), P. 109573 - 109573

Published: Jan. 29, 2024

Language: Английский

Citations

7

Coumarin based glyoxylate photoinitiators for free radical and cationic Photopolymerizations with UV-Visible LED irradiation DOI
Xun Sun, Xianglong He, Mei Yi

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: 211, P. 113025 - 113025

Published: April 6, 2024

Language: Английский

Citations

7

Recent advances on naphthoquinone-based photoinitiators of polymerization DOI Creative Commons
Frédéric Dumur

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

Published: May 6, 2023

Language: Английский

Citations

16

Onium Photocages for Visible-Light-Activated Poly(thiourethane) Synthesis and 3D Printing DOI
Meghan T. Kiker, Ain Uddin, Lynn M. Stevens

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(29), P. 19704 - 19709

Published: July 9, 2024

The lack of chemical diversity in light-driven reactions for 3D printing poses challenges the production structures with long-term ambient stability, recyclability, and breadth properties (mechanical, optical, etc.). Herein we expand scope photochemistries compatible by introducing onium photocages rapid formation poly(thiourethanes) (PTUs). Efficient nonsensitized visible-light photolysis releases organophosphine -amine derivatives that catalyze thiol–isocyanate polyaddition excellent temporal control. Two resin formulations comprising commercial isocyanates thiols were developed digital light processing (DLP) to showcase fast high-resolution PTU objects disparate mechanical properties. Onium represent valuable tools advance manufacturing next-generation high-performance sustainable materials.

Language: Английский

Citations

4

Design of Dyes Based on the Quinoline or Quinoxaline Skeleton towards Visible Light Photoinitiators DOI Open Access
Ilona Pyszka, Beata Jędrzejewska

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(8), P. 4289 - 4289

Published: April 12, 2024

Dyes based on quinoline and quinoxaline skeletons were designed for application as visible light photoinitiators. The obtained compounds absorb electromagnetic radiation the border between ultraviolet light, which allows use of dental lamps sources during initiation photopolymerization reaction. Their another desirable feature is ability to create a long-lived excited state, enables chain reaction proceed through mechanism intermolecular electron transfer. In two-component photoinitiating systems, in presence an donor or hydrogen atom donor, synthesized show excellent abilities photoinitiate polymerization acrylates. control tests, efficiency using modified derivatives comparable that typical, commercial photoinitiator dentistry, camphorquinone. Moreover, tested requires small amount (only 0.04% by weight) initiate research also showed significant acceleration process shortening time. practice, this means new initiating systems can be used much lower concentrations without slowing down speed obtaining polymer materials. It worth emphasizing these two features system allow cost reduction reducing financial outlays both materials (photoinitiators) electricity.

Language: Английский

Citations

3

Epoxy curing in mild and eco-friendly conditions: towards bisphenol A-free systems DOI Creative Commons

Valentine Lavaux,

Jacques Lalevée

Progress in Polymer Science, Journal Year: 2024, Volume and Issue: 157, P. 101873 - 101873

Published: Aug. 24, 2024

Language: Английский

Citations

3