Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Efficacy Analysis of In Situ Synthesis of Nanogold via Copper/Iodonium/Amine/Gold System Under a Visible Light

Version 1 : Received: 14 June 2021 / Approved: 16 June 2021 / Online: 16 June 2021 (08:37:27 CEST)

How to cite: Lin, J.; Lalevee, J.; Tar, H.; Cheng, D. Efficacy Analysis of In Situ Synthesis of Nanogold via Copper/Iodonium/Amine/Gold System Under a Visible Light. Preprints 2021, 2021060424 (doi: 10.20944/preprints202106.0424.v1). Lin, J.; Lalevee, J.; Tar, H.; Cheng, D. Efficacy Analysis of In Situ Synthesis of Nanogold via Copper/Iodonium/Amine/Gold System Under a Visible Light. Preprints 2021, 2021060424 (doi: 10.20944/preprints202106.0424.v1).

Abstract

. This article presents, for the first time, the kinetics and the general features of a photopolymerization system (under visible light) G1/ Iodonium/ TEA/gold chloride (or A/B/N/G), having initial concentrations of A0, B0, N0 and G0, based on the proposed mechanism of Tar et al. Analytic formulas are developed to explore the new features including: (i) both FRP efficacy and the production of nanogold (NG) are proportional to the relative concentration ratios of (A0+B0+N0)/G0, which may be optimized for maximum efficacy; (ii) the two competing procedure of NG production and efficacy of free radical photopolymerization (FRP) can be tailored for optimal system with nanogold in the polymer matrix;(ii) the FRP efficacy is contributed by 3 components: the coupling of the excited state of copper complex (T) with the radicals (R and S) produced by the iodonium and the amine; (iii) the production of NG is contributed by 2 components: the coupling of T and radical (S) with gold ion; (iv) NG production has a transient state value which is an increasing function of light intensity and the combined concentration ratio [(A0/G0)+(N0/(K'M0). whereas it has a steady-state independent to the light intensity.

Subject Areas

polymerization kinetics; photoinitiator; free radical polymerization; copper complex; photoredox catalyst; nanogold particles

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