A Charge‐Transfer Complex of Thioxanthonephenacyl Sulfonium Salt as a Visible‐Light Photoinitiator for Free Radical and Cationic Polymerizations

ChemPhotoChem ◽  
2019 ◽  
Vol 3 (11) ◽  
pp. 1187-1192 ◽  
Author(s):  
Kerem Kaya ◽  
Johannes Kreutzer ◽  
Yusuf Yagci
Keyword(s):  
Charge Transfer ◽  
Free Radical ◽  
Visible Light ◽  
Charge Transfer Complex ◽  
Sulfonium Salt ◽  
A Charge ◽  
Cationic Polymerizations

scholarly journals Water-Soluble Visible Light Sensitive Photoinitiating System Based on Charge Transfer Complexes for the 3D Printing of Hydrogels

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3195
Author(s):  
Hong Chen ◽  
Mehdi Vahdati ◽  
Pu Xiao ◽  
Frédéric Dumur ◽  
Jacques Lalevée
Keyword(s):  
Charge Transfer ◽  
3D Printing ◽  
Visible Light ◽  
Water Solubility ◽  
Charge Transfer Complex ◽  
Water Soluble ◽  
Charge Transfer Complexes ◽  
Free Radical Photopolymerization ◽  
Potential Applications ◽  
A Charge

The development of visible-light 3D printing technology by using water-soluble initiating systems has attracted widespread attention due to their potential applications in the manufacture of hydrogels. Besides, at present, the preparation of water-soluble photoinitiators suitable for visible light irradiation (such as LEDs) still remains a challenge. Therefore, this work is devoted to developing water-soluble photoinitiators (PI)/photoinitiating systems (PIS) upon irradiation with a LED @ 405 nm. In detail, a new water-slightly-soluble chalcone derivative dye [(E)-3-(4-(dimethylamino) phenyl)-1-(4-(2-(2-(2-methoxyethoxy) ethoxy) ethoxy) phenyl) prop-2-en-1-one] was synthesized here and used as a PI with a water-soluble coinitiator, i.e., triethanolamine (TEA) which was also used as an electron donor. When combined together, a charge transfer complex (CTC) formed immediately which exhibited excellent initiating ability for the free radical photopolymerization of poly(ethyleneglycol)diacrylate (PEG-DA). In light of the powerful CTC effect, the [dye-TEA] CTC could not only exhibit enhanced water solubility and mechanical properties but could also be effectively applied for 3D printing. This CTC system is environmentally friendly and cost-saving which demonstrates a great potential to prepare hydrogels via photopolymerization.

Activation of peroxymonosulfate on visible light irradiated TiO2 via a charge transfer complex path

2018 ◽  
Vol 346 ◽  
pp. 249-257 ◽  
Author(s):  
Yoosang Jo ◽  
Chuhyung Kim ◽  
Gun-Hee Moon ◽  
Jaesang Lee ◽  
Taicheng An ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
Charge Transfer Complex ◽  
A Charge

Design, Synthesis and Use of Phthalocyanines as a New Class of Visible-Light Photoinitiators for Free-Radical and Cationic Polymerizations

2021 ◽  
Author(s):  
Davy-Louis Versace ◽  
Louise Breloy ◽  
Yusuf Yagci ◽  
Ismail Yilmaz ◽  
Ozgur Yavuz
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Design Synthesis ◽  
New Class ◽  
Optical Stability ◽  
Cationic Polymerizations

Phthalocyanines (Pcs) are interesting molecules offering a fascinating chemistry world which received tremendous interest in the last decade. Their certain features such as high thermal, chemical, and optical stability as...

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