In situ monitoring of photopolymerization by photoinitiator with luminescence characteristics

Li, Jingfang; Li, Sanbao; Li, Yawei; Li, Ruiqi; Nie, Jun; Zhu, Xiaoqun

doi:10.1016/j.jphotochem.2019.112225

Cited by 53 publications

(22 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Notably, in PEG-diacrylate, a 2.5-fold enhancement of the monomer conversion was observed with C55 compared to that obtained with ITX. The possibility of monitoring the polymerization process via photoluminescence measurements was also demonstrated by the same authors [157]. Finally, the mechanism depicted in Scheme 2 was proposed by the authors to support the formation of exciplexes and the ability of PEG-diacrylate to act as a co-initiator.…”

Section: Chalconesmentioning

confidence: 79%

Recent Advances in bis-Chalcone-Based Photoinitiators of Polymerization: From Mechanistic Investigations to Applications

Giacoletto

Dumur

2021

Molecules

View full text Add to dashboard Cite

Over the past several decades, photopolymerization has become an active research field, and the ongoing efforts to develop new photoinitiating systems are supported by the different applications in which this polymerization technique is involved—including dentistry, 3D and 4D printing, adhesives, and laser writing. In the search for new structures, bis-chalcones that combine two chalcones’ moieties within a unique structure were determined as being promising photosensitizers to initiate both the free-radical polymerization of acrylates and the cationic polymerization of epoxides. In this review, an overview of the different bis-chalcones reported to date is provided. Parallel to the mechanistic investigations aiming at elucidating the polymerization mechanisms, bis-chalcones-based photoinitiating systems were used for different applications, which are detailed in this review.

show abstract

Section: Chalconesmentioning

confidence: 79%

Recent Advances in bis-Chalcone-Based Photoinitiators of Polymerization: From Mechanistic Investigations to Applications

Giacoletto

Dumur

2021

Molecules

View full text Add to dashboard Cite

show abstract

“…Like our previous works, [16][17][18] D-π-A-π-D molecule BBFC were synthesized through one-step Claisen-Schmidt reaction successfully. According to our pre-design, this new molecule BBFC would have longer wavelength of absorption than that of BFC for the introduction into the benzene ring, the bigger conjugation is formed.…”

Section: Resultsmentioning

confidence: 94%

Synthesis of D‐π‐A‐π‐D photoinitiator with high‐photoinitiation efficiency by restricting photoinduced isomerization process

Zhu

2021

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

In this work, we designed a new D-π-A-π-D LED photoinitiator BBFC with high molar excitation coefficient and photoinitiation efficiency based on the principle of inhibition of photoisomerization. Via introduction of benzene ring on the BFC, which we have reported before, the absorption wavelength, molar excitation coefficient and photoinitiation efficiency of BBFC were greatly improved. The characterization and theoretical calculation proved BBFC has no photoisomerization, for the change of the configuration of BBFC requiring high energy due to the steric effect. BBFC has higher initiation efficiency than that of commercial photoinitiator ITX with little content under air condition. This might have potential to design new D-π-A-π-D molecules with high-photoinitiation efficiency and contribute the field of photo polymerization.

show abstract

“…42 Apart from the hydrogen atom donors, co-initiators are also chosen by their potential to interact with the initiator through SET procedures (Scheme 6). Examples of this type of co-initiators are sulfonium ions, 39,43 iodonium, 44 N-protected BDN or DBU, 45 and NHC. 46 In order to bypass the need for a co-initiator, researchers designed thioxanthone-type molecules, bearing different functionalities, that upon irradiation, can be utilized in polymerisations without the use of an external co-initiator (Scheme 7).…”

Section: O Or' Rmentioning

confidence: 99%

Thioxanthone: a powerful photocatalyst for organic reactions

2021

View full text Add to dashboard Cite

show abstract

In situ monitoring of photopolymerization by photoinitiator with luminescence characteristics

Cited by 53 publications

References 20 publications

Recent Advances in bis-Chalcone-Based Photoinitiators of Polymerization: From Mechanistic Investigations to Applications

Recent Advances in bis-Chalcone-Based Photoinitiators of Polymerization: From Mechanistic Investigations to Applications

Synthesis of D‐π‐A‐π‐D photoinitiator with high‐photoinitiation efficiency by restricting photoinduced isomerization process

Thioxanthone: a powerful photocatalyst for organic reactions

Contact Info

Product

Resources

About