Difunctional monomeric and polymeric photoinitiators: Synthesis and photoinitiating behaviors

Cesur, Belgin; Karahan, Özlem; Agopcan, Sesil; Eren, Tugce Nur; Okte, Neren; Avcı, Duygu

doi:10.1016/j.porgcoat.2015.04.010

Cited by 28 publications

(10 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ref. [1k],, and the particular use of the LED technology outlined in a recent review . In CP and FRPCP, two‐ and three‐component PISs are currently used (see below).…”

Section: Introductionmentioning

confidence: 99%

Cationic Photoinitiators for Near UV and Visible LEDs: A Particular Insight into One‐Component Systems

Zhang

Xiao

Dietlin

et al. 2016

Macro Chemistry & Physics

View full text Add to dashboard Cite

The observed development of one‐component photoinitiators of cationic polymerization reactions in the last forty years is briefly described. Cationic photoinitiators can usually be activated by short wavelengths (<300 nm) and relatively hard conditions (high intensity). The search for cheaper and safer light sources has led to the use of Light Emitting Diodes (LEDs). In this review, a special emphasis is provided on the most recent and promising cationic initiators operating under near UV and visible LEDs. Ferrocenium salts exhibit the broadest visible light absorption and are probably, from this point of view, the most versatile near UV and visible light cationic initiators. Excellent photoinitiation performance has been found with the ferrocenium salts as one‐component initiators, and the effect of ferrocenium salts based multi‐component photoinitiating systems on the relevant photoinitiation performance has also been investigated.

show abstract

“…ref. [1k],, and the particular use of the LED technology outlined in a recent review . In CP and FRPCP, two‐ and three‐component PISs are currently used (see below).…”

Section: Introductionmentioning

confidence: 99%

Cationic Photoinitiators for Near UV and Visible LEDs: A Particular Insight into One‐Component Systems

Zhang

Xiao

Dietlin

et al. 2016

Macro Chemistry & Physics

View full text Add to dashboard Cite

show abstract

“…Besides high reactivity, solubility in the formulation, low odor and toxicity, no darkening due to the migration of residues in the cured film, and good storage stability are other important issues for the design and preparation of new high performance photoinitiating systems. Recently, researchers have been investigating copolymerizable, polymeric (PPIs), dendritic, or hyperbranched radical PIs to fulfill the above mentioned requirements, due to their advantages in comparison with their corresponding low molecular weight analogs.…”

Section: Introductionmentioning

confidence: 99%

Photophysical and Photochemical Studies of Novel Thioxanthone‐Functionalized Methacrylates through LED Excitation

Eren

Yasar

Avi̇yente

et al. 2016

Macro Chemistry & Physics

Self Cite

View full text Add to dashboard Cite

Five novel thioxanthone (TX)‐functionalized methacrylates as copolymerizable photoinitiators (CopPIs) for polymerization of acrylates are synthesized from reactions of tert‐butyl α‐bromomethacrylate with 2‐hydroxy thioxanthone (TX1) and 1,4‐dihydroxy thioxanthone (TX3), cleavage of their respective tert‐butyl ester groups with trifluoroacetic acid (TX2, TX4), and by reaction of the acid chloride derivative of TX2 with Irgacure 2959 (TX5). These CopPIs absorb in the near UV–visible region (390–420 nm; absorption redshift ≈10–40 nm, ε values comparable to TX). Their performances are studied under LED exposure at 385 and 405 nm using real‐time FTIR. The reactivities of TX1 and TX2 are similar to isopropyl thioxanthone, used as reference; TX3 and TX4 have lower reactivities, due to their difunctionality, which however makes them good crosslinking agents. TX5 is the first monomeric PI possessing two different type side‐chain photoinitiating groups. The migration stability of two of these CopPIs is shown in the cured polyacrylates. The photochemical mechanisms are studied by electron spin resonance, steady state photolysis, laser flash photolysis, and cyclic voltammetry.

show abstract

“…Small molecular weight commercial photoinitiators do not exhibit all of these properties. Therefore, in recent years, the development of monomeric (MPI) [5][6][7][8][9][10][11][12] and polymeric photoinitiators (PPIs) [13][14][15][16][17][18][19][20][21][22][23][24][25] which do, has become an important issue.…”

Section: Introductionmentioning

confidence: 99%

“…We previously synthesized a series of BP-containing monomeric and polymeric photoinitiators based on highly polymerizable alkyl -hydroxy methacrylate (RHMA's) [7,10,11]. In the present work, we have attached both Type I and Type II photoinitiators to two different methacrylates (TBBr & IEM) in order to combine the advantages of polymerizability with the advantageous properties of commercial photoinitiators (Fig.…”

Section: Introductionmentioning

confidence: 99%

Structure-reactivity relationships of novel monomeric photoinitiators

Çınar

Guven

Eren

et al. 2016

Journal of Photochemistry and Photobiology A: Chemistry

Self Cite

View full text Add to dashboard Cite

Difunctional monomeric and polymeric photoinitiators: Synthesis and photoinitiating behaviors

Cited by 28 publications

References 31 publications

Cationic Photoinitiators for Near UV and Visible LEDs: A Particular Insight into One‐Component Systems

Cationic Photoinitiators for Near UV and Visible LEDs: A Particular Insight into One‐Component Systems

Photophysical and Photochemical Studies of Novel Thioxanthone‐Functionalized Methacrylates through LED Excitation

Structure-reactivity relationships of novel monomeric photoinitiators

Contact Info

Product

Resources

About