Kinetics of multifunctional (meth)acrylates photopolymerization in the presence of aromatic imidazole

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Resumo

The photolysis of phenanthroline-containing imidazole in DMSO solution and the initiating ability of the compound in photopolymerization of multifunctional (meth)acrylates under LED irradiation (λ = 395 nm) under aerobic conditions were investigated for the first time. The relationship of kinetic parameters of photopolymerization with light intensity, chemical structure, and viscosity of multifunctional monomers was established.

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Sobre autores

Y. Begantsova

Razuvaev Institute of Organometallic Chemistry

Autor responsável pela correspondência
Email: begantsova@mail.ru
Rússia, Nizhny Novgorod

A. Konev

Razuvaev Institute of Organometallic Chemistry

Email: begantsova@mail.ru
Rússia, Nizhny Novgorod

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2. Fig. 1. Emission spectra of LED (λ = 395 nm) (1) and KGM-24-150 lamp (2). The dotted line shows the absorption spectrum of compound 1 in a DMSO solution.

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3. Fig. 2. Changes in the electronic absorption and emission spectra of compound 1 in DMSO solution upon LED irradiation (λ = 395 nm) in air.

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4. Scheme 1.

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5. Fig. 3. Kinetic curves of photopolymerization of (meth)acrylates: 1 – TMPTMA, 2 – PETA, 3 – TMPTA, 4 – TMPTA ET, 5 – GPTA, 6 – PETTA, 7 – DiMPTA, 8 – DiPEPTA. λ = 385 and 405 nm, irradiation power 4.8 (a) and 33.6 (b) mW/cm2, [1] = 4 mM, air.

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