Diphenylphenacyl sulfonium salt as dual photoinitiator for free radical and cationic polymerizations

Kerem Kaya; Johannes Kreutzer; Yusuf Yagci

doi:10.1002/pola.28918

Diphenylphenacyl sulfonium salt as dual photoinitiator for free radical and cationic polymerizations

Kerem Kaya, Johannes Kreutzer, Yusuf Yagci^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Diphenylphenacylsulfonium tetrafluoroborate (DPPS⁺BF^4–) salt possessing both phenacyl and sulfonium structural units was synthesized and characterized. DPPS⁺BF^4– absorbs light at relatively higher wavelengths. The direct and sensitized initiation activity of the salt in both cationic and free radical photopolymerizations was investigated and compared with that of its analogue triphenylsulfonium tetrafluoroborate (TPS⁺BF^4–). Differential scanning photocalorimetry and conventional gravimetric studies revealed that DPPS⁺BF^4– showed higher efficiency for direct and sensitized photopolymerizations of most of the monomers investigated. Although, principally both homolytic and/or heterolytic cleavage is possible, theoretical studies suggested that homolytic pathway is more favored for the generation of reactive initiating species.

Original language	English
Pages (from-to)	451-457
Number of pages	7
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	56
Issue number	4
DOIs	https://doi.org/10.1002/pola.28918
Publication status	Published - Feb 2018

Bibliographical note

Publisher Copyright:
© 2017 Wiley Periodicals, Inc.

Keywords

calorimetry
cationic polymerization
cleavage reaction
free radical polymerization
phenacyl onium salts
photoinitiator
sensitization
sulfonium salts

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title = "Diphenylphenacyl sulfonium salt as dual photoinitiator for free radical and cationic polymerizations",

abstract = "Diphenylphenacylsulfonium tetrafluoroborate (DPPS+BF4–) salt possessing both phenacyl and sulfonium structural units was synthesized and characterized. DPPS+BF4– absorbs light at relatively higher wavelengths. The direct and sensitized initiation activity of the salt in both cationic and free radical photopolymerizations was investigated and compared with that of its analogue triphenylsulfonium tetrafluoroborate (TPS+BF4–). Differential scanning photocalorimetry and conventional gravimetric studies revealed that DPPS+BF4– showed higher efficiency for direct and sensitized photopolymerizations of most of the monomers investigated. Although, principally both homolytic and/or heterolytic cleavage is possible, theoretical studies suggested that homolytic pathway is more favored for the generation of reactive initiating species.",

keywords = "calorimetry, cationic polymerization, cleavage reaction, free radical polymerization, phenacyl onium salts, photoinitiator, sensitization, sulfonium salts",

author = "Kerem Kaya and Johannes Kreutzer and Yusuf Yagci",

note = "Publisher Copyright: {\textcopyright} 2017 Wiley Periodicals, Inc.",

year = "2018",

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doi = "10.1002/pola.28918",

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volume = "56",

pages = "451--457",

journal = "Journal of Polymer Science, Part A: Polymer Chemistry",

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TY - JOUR

T1 - Diphenylphenacyl sulfonium salt as dual photoinitiator for free radical and cationic polymerizations

AU - Kaya, Kerem

AU - Kreutzer, Johannes

AU - Yagci, Yusuf

PY - 2018/2

Y1 - 2018/2

N2 - Diphenylphenacylsulfonium tetrafluoroborate (DPPS+BF4–) salt possessing both phenacyl and sulfonium structural units was synthesized and characterized. DPPS+BF4– absorbs light at relatively higher wavelengths. The direct and sensitized initiation activity of the salt in both cationic and free radical photopolymerizations was investigated and compared with that of its analogue triphenylsulfonium tetrafluoroborate (TPS+BF4–). Differential scanning photocalorimetry and conventional gravimetric studies revealed that DPPS+BF4– showed higher efficiency for direct and sensitized photopolymerizations of most of the monomers investigated. Although, principally both homolytic and/or heterolytic cleavage is possible, theoretical studies suggested that homolytic pathway is more favored for the generation of reactive initiating species.

AB - Diphenylphenacylsulfonium tetrafluoroborate (DPPS+BF4–) salt possessing both phenacyl and sulfonium structural units was synthesized and characterized. DPPS+BF4– absorbs light at relatively higher wavelengths. The direct and sensitized initiation activity of the salt in both cationic and free radical photopolymerizations was investigated and compared with that of its analogue triphenylsulfonium tetrafluoroborate (TPS+BF4–). Differential scanning photocalorimetry and conventional gravimetric studies revealed that DPPS+BF4– showed higher efficiency for direct and sensitized photopolymerizations of most of the monomers investigated. Although, principally both homolytic and/or heterolytic cleavage is possible, theoretical studies suggested that homolytic pathway is more favored for the generation of reactive initiating species.

KW - calorimetry

KW - cationic polymerization

KW - cleavage reaction

KW - free radical polymerization

KW - phenacyl onium salts

KW - photoinitiator

KW - sensitization

KW - sulfonium salts

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U2 - 10.1002/pola.28918

DO - 10.1002/pola.28918

M3 - Article

AN - SCOPUS:85037622720

SN - 0887-624X

VL - 56

SP - 451

EP - 457

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 4

ER -

Diphenylphenacyl sulfonium salt as dual photoinitiator for free radical and cationic polymerizations

Abstract

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Keywords

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