2015
DOI: 10.1002/app.42759
|View full text |Cite
|
Sign up to set email alerts
|

Specific cationic photoinitiators for near UV and visible LEDs: Iodonium versus ferrocenium structures

Abstract: Two iodonium salts based on a coumarin chromophore are investigated for polymerization upon light emitting diode irradiations (LEDs). They work as one-component photoinitiators. They initiate the cationic polymerization of epoxides (under air) and vinylethers (laminate) upon exposure to violet LEDs (385 and 405 nm). Excellent polymerization profiles are recorded. Their efficiency is quite similar to that of a ferrocenium salt. Interpenetrating polymer networks can also be obtained through a concomitant cationi… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

0
59
0
1

Year Published

2016
2016
2022
2022

Publication Types

Select...
4
3

Relationship

3
4

Authors

Journals

citations
Cited by 83 publications
(60 citation statements)
references
References 74 publications
(94 reference statements)
0
59
0
1
Order By: Relevance
“…3 In last decade, polymethine dyes, 4 cyanines with barbituryl group, 22 erythrosine B, 23 naphthalimide derivatives, 24 coumarin chromophores, 3 xanthenes, 25 resazurin and resorun, 26 quinoxaline derivatives, 19 isopropylthioxanthone 27 as well as inorganic compounds, such as perovskites 18 are used as photoinitiating systems containing diphenyliodonium salts. In generation, the dye sensitized photopolymerization is based on the formation of initiating species through either photoreduction or photooxidation reactions of dye with co-initiator.…”
Section: 4-21mentioning
confidence: 99%
See 1 more Smart Citation
“…3 In last decade, polymethine dyes, 4 cyanines with barbituryl group, 22 erythrosine B, 23 naphthalimide derivatives, 24 coumarin chromophores, 3 xanthenes, 25 resazurin and resorun, 26 quinoxaline derivatives, 19 isopropylthioxanthone 27 as well as inorganic compounds, such as perovskites 18 are used as photoinitiating systems containing diphenyliodonium salts. In generation, the dye sensitized photopolymerization is based on the formation of initiating species through either photoreduction or photooxidation reactions of dye with co-initiator.…”
Section: 4-21mentioning
confidence: 99%
“…Most of them are characterized by high photolysis quantum yields and are efficient when the irradiation is carried out using light in the UV region from 230 nm to 300 nm. 3 The most widely used onium salts are diaryliodonium salts with a chloride or perchlorate counterion. They have been employed extensively for cationic and vinyl polymerization.…”
Section: Introductionmentioning
confidence: 99%
“…B. Diarylhalonium, Tr iarylsulfonium) und einem Gegenanion. [18] Die Fähigkeit dieses Iodoniumsalzes,s owohl radikalische als auch kationische Spezies bei einer längeren Wellenlänge zu bilden, ermçglichte die erfolgreiche Polymerisation eines Acrylat-Epoxid-Blends unter 405-nm-LED-Bestrahlung. Während das Kation einen direkten Einfluss auf die Photochemie hat (e max = maximaler molarer Extinktionskoeffizient, l max = Absorptionswellenlänge entsprechend e max , F = Quantenausbeute), bestimmt das Anion die Stärke der bei der Photolyse des Kations gebildeten Säure und steuert die Kinetik der Polymerisation.…”
Section: Ionische Photosäurebildnerunclassified
“…various substituted compounds, phenacylsulfonium salts, (9‐oxo‐9H‐fluoren‐2‐yl)‐phenyl‐iodonium salt, pyridinium salts, phenylethynyl sulfonium salts, iodonium salts with a suitable counteranion, thioxanthenium salts, arylthianthrenium salts, iodonium salts bearing a chromophoric moiety (e.g. fluorenone or coumarin, novel ferrocenium salts and so on . Very recently, a new phenacyl ethyl carbazolium hexafluoroantimonate photoinitiator (noted PECH) was reported .…”
Section: Backgroundsmentioning
confidence: 99%
“…In coumarin moiety containing iodonium salts Coum‐I + ‐Ph (P3C‐P and P3C‐Sb in Scheme ), the maximum absorption wavelengths are red‐shifted compared to Ph 2 I + (350 vs. 230 nm) (Figure ); the molar extinction coefficients are almost similar. Two possible cleavages could operate in these compounds (Coum‐I or I‐Ph bond dissociation) but the I‐Ph cleavage has appeared as the most energetically favourable (Figure ) . According to the known behaviour of iodonium salts, further out‐of‐cage or/and in‐cage processes lead to the release of protons that can initiate the cationic polymerization.…”
Section: Performance Of Recently Developed One‐component Cationic Phomentioning
confidence: 99%