Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 454, P. 140130 - 140130
Published: Nov. 2, 2022
Language: Английский
Macromolecular Rapid Communications, Journal Year: 2022, Volume and Issue: 43(14)
Published: May 17, 2022
3D printing has revolutionized the way of manufacturing with a huge impact on various fields, in particular biomedicine. Vat photopolymerization-based techniques such as stereolithography (SLA) and digital light processing (DLP) attract considerable attention owing to their superior print resolution, relatively high speed, low cost, flexibility resin material design. As one key element SLA/DLP resin, photoinitiators or photoinitiating systems have experienced significant development recent years, parallel exploration (macro)monomers. The design new cannot only offer faster speed enable low-energy visible fabrication, but also can bring functions printed products even generate methods combination advanced optics. This review evaluates trends application for vat photopolymerization printing, wide range small molecules, polymers, nanoassemblies involved. Personal perspectives current limitations future directions are eventually provided.
Language: Английский
Citations
108
Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(6), P. 2448 - 2463
Published: Jan. 1, 2023
Smart batteries will penetrate all corners of the new energy field represented by Li-ion batteries. exhibit higher power performance, safety and durability.
Language: Английский
Citations
48
ChemPhotoChem, Journal Year: 2022, Volume and Issue: 6(11)
Published: June 27, 2022
Abstract Photopolymerization and its application in the dental, three‐dimensional (3D) printing, coating electronic industry has become increasingly popular over last decades. A huge variety of photoinitiators (PIs) photoinitiating systems (PISs) have been developed that are able to generate reactive species, e. g. radicals, radical cations, cations upon light absorption. In this Review, we focus on radical‐generating Type I PIs which undergo homolytic cleavage after irradiation with visible light. The possibility utilize electromagnetic above 400 nm for initiation polymerization reactions provides several advantages such as a lower energy demand higher curing depths pigmented systems. Recent developments based phosphorus group 14 elements well other selected concepts initiators outlined discussed within review.
Language: Английский
Citations
71
Journal of Polymer Science, Journal Year: 2021, Volume and Issue: 59(13), P. 1338 - 1389
Published: June 5, 2021
Abstract Even though many organic dyes have been reported as photoinitiators/photosensitizers for free radical polymerization in the literature, design and development of novel photoinitiating systems based on adaptable visible light irradiation, example, 405 nm LED sunlight still remains challenging. Recently, major achievements high‐performance light‐harvesting compounds their uses photoinitiators photopolymerization under visible‐light irradiation clearly emerged, giving rise to abundant literature. In this review, an overview recently synthesized chromophores belonging various families used during 2018–2021 period are presented classified. Recent works resulted new exhibiting remarkable absorption properties excellent photoinitiation abilities upon with LEDs and/or processes. These developments notably indicate that has advantages being a cheap, unlimited, broad emission spectrum, energy‐saving source capable be efficient substitute artificial sources. The newly developed dye‐based designed initiate visible‐light‐induced processes likely expand scope application modern sciences technologies.
Language: Английский
Citations
68
Macromolecular Rapid Communications, Journal Year: 2021, Volume and Issue: 42(15)
Published: May 3, 2021
Abstract A series of Type I photoinitiators (PIs) based on a nitrocarbazole scaffold are developed and examined for the first time as visible light photopolymerization. Three oxime esters (OXE‐M, OXE‐V, OXE‐P) varying by terminal groups (acetyl, acryloyl benzoyl) attached via ester group originally prepared. As result this, three PIs exhibit excellent photoinitiation abilities in presence acrylate monomers upon LED@ 405 nm irradiation. Markedly, OXE‐M exhibits better performance than benchmark phosphine‐oxide (diphenyl(2,4,6‐trimethylbenzoyl)phosphine oxide TPO). Chemical mechanisms supporting polymerization process with these investigated steady state photolysis, molecular orbital calculations real‐time Fourier transformed infrared spectroscopy. After cleavage N─O bond decarboxylation, free radicals generated to initiate radical efficiently. Free photopolymerization is applied direct laser write 3D printing. Interestingly, thermal initiation behaviors can be used dual photo initiators. The highly opaque feature carbon fibers makes it difficult penetration, so photo/thermal curing here prepare fiber composites.
Language: Английский
Citations
64
ACS Omega, Journal Year: 2022, Volume and Issue: 7(14), P. 11530 - 11543
Published: March 28, 2022
As the strategies of enzyme immobilization possess attractive advantages that contribute to realizing recovery or reuse enzymes and improving their stability, they have become one most desirable techniques in industrial catalysis, biosensing, biomedicine. Among them, 3D printing is emerging potential strategy. The main for are can directly produce complex channel structures at low cost, printed scaffolds with immobilized be completely modified just by changing original design graphics. In this review, a comprehensive set developments fields techniques, materials, applications industry biomedicine summarized. addition, we put forward some challenges possible solutions development field directions future.
Language: Английский
Citations
61
Macromolecules, Journal Year: 2022, Volume and Issue: 55(7), P. 2475 - 2485
Published: March 30, 2022
A series of 50 oxime esters bearing various substituents were designed and synthesized as photoinitiators (48 them never before only B1 B10 reported). Good light absorption properties in the visible range observed for these esters. Some structures exhibited better photoinitiation abilities than diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) upon exposure to a LED@405 nm. Interestingly, PIs with methyl substituent on ester group have performance others. Substituent effects investigated through molecular orbitals calculations, detection CO2, investigation generated free radicals. The results demonstrate that exert major ability via decarboxylation reaction. In addition, chemical mechanism was proposed. 3D printed objects successfully obtained by using most reactive photoinitiator, their thermal initiation behaviors several also studied (dual thermal/photochemical initiator behavior).
Language: Английский
Citations
48
European Polymer Journal, Journal Year: 2022, Volume and Issue: 165, P. 110999 - 110999
Published: Jan. 15, 2022
Language: Английский
Citations
45
Polymers, Journal Year: 2023, Volume and Issue: 15(2), P. 342 - 342
Published: Jan. 9, 2023
Currently, increasing attention has been focused on light-emitting diodes (LEDs)-induced photopolymerization. The common LEDs (e.g., LED at 365 nm and 405 nm) possess narrow emission bands. Due to their light absorption properties, most commercial photoinitiators are sensitive UV cannot be optimally activated under visible irradiation. Although many have designed for LED-induced free radical polymerization cationic polymerization, there is still the issue of mating between LEDs. Therefore, development novel photoinitiators, which could applied irradiation, significant. Many photoinitiating systems reported in past decade. In this review, some recently developed used photopolymerization, mainly 5 years, summarized categorized as Type Ⅰ Ⅱ dye-based systems. addition, properties photoinitiation efficiencies discussed.
Language: Английский
Citations
32
European Polymer Journal, Journal Year: 2023, Volume and Issue: 186, P. 111874 - 111874
Published: Feb. 1, 2023
Language: Английский
Citations
30