Synthesis of Novel Well-defined End-functional Macrophotoinitiator of Poly(ε-caprolactone) by Ring-opening Polymerization

Abstract

ABSTRACT:A new end-chain functional macrophotoinitiator of poly("-caprolactone) has been synthesized by controlled/living ring-opening polymerization (ROP) method. For this purpose, mono hydroxy functional a photoinitiator namely, 1-hydroxycyclohexyl phenyl ketone (HCPK), Irgacure 184, was used as the initiator for the stannous-2-ethylhexanoate (Sn(Oct) 2 ) catalyzed living ring-opening polymerization of "-caprolactone. The GPC and IR, H NMR, UV and fluorescence spectroscopic studies revealed that low-polydispersity poly("-caprolactone) with photoinitiator functionality at the end of the chain was obtained.

Synthesis and Characterization of Well‐Defined Mid‐Chain Functional Macrophotoinitiators of Polystyrene by Combination of ATRP and “Click” Chemistry

“…[22,[26][27][28][29][30] In our previous studies, we have synthesized novel welldefined polymers containing photofunctional groups in their mid-chain and end-chain, using controlled/ living polymerization methods, such as ATRP [7,31,32] and ring opening polymerization (ROP). [33,34] Moreover, we have recently prepared a well-defined telechelic macrophotinitiator of polystyrene using a combination of ATRP and ''click'' chemistry. [35] In this article, we applied the same strategy (the combination of ATRP and ''click'' chemistry) for preparing a mid-chain functional macrophotinitiator of polystyrene (PSt).…”

Study of Novel PU‐Type Polymeric Photoinitiators Comprising of Side‐Chain Benzophenone and Coinitiator Amine: Effect of Macromolecular Structure on Photopolymerization

“…[1][2][3] Compared with low molecular weight analogues, polymeric photoinitiators have drawn much attention recently due to several advantages, such as low odor, non-toxicity and compatibility improvement with formulation components. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] In particular, due to the efficient energy…”

Effect on Photopolymerization of the Structure of Amine Coinitiators Contained in Novel Polymeric Benzophenone Photoinitiators

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Compared with their low-molecular-weight analogues, they have several advantages such as high absorptivity, high efficiency in terms of both quantum yield for radical formation and high reactivity towards the monomer, low odor, low toxicity, and good storage stability. Polymeric photoinitiators that contain pendant or in-chain chromophores have been classified into two types: photofragmentation (type I photoinitiators) and hydrogenabstraction chromophores (type II photoinitiators).…”