Issue 20, 2017

Estimating the photodissociation quantum yield from PLP-SEC peak heights

Abstract

A fast method for the reliable estimation of the photodissociation quantum yield Φdiss is presented. Pulsed laser polymerization (PLP) experiments are performed at various pulse energies (1.5–6 mJ) and regression analysis is performed to the ratio of the peak heights identified in the size exclusion chromatography (SEC) trace. The high accuracy of the method is demonstrated for PLP initiated by 2,2-dimethoxy-2-phenylacetophenone (DMPA), considering in silico generated data including large theoretical errors (up to 20%). The method has also been successfully applied to experimental data of DMPA based isothermal PLP of n-butyl acrylate at 306 K, with an estimated Φdiss of 0.42 ± 0.04. In the long term, the method will facilitate the evaluation of current and the design of new highly efficient photoinitiators.

Graphical abstract: Estimating the photodissociation quantum yield from PLP-SEC peak heights

Supplementary files

Article information

Article type
Paper
Submitted
10 Mar 2017
Accepted
18 Apr 2017
First published
19 Apr 2017

Polym. Chem., 2017,8, 3124-3128

Estimating the photodissociation quantum yield from PLP-SEC peak heights

Y. W. Marien, P. H. M. Van Steenberge, K. B. Kockler, C. Barner-Kowollik, M. Reyniers, G. B. Marin and D. R. D'hooge, Polym. Chem., 2017, 8, 3124 DOI: 10.1039/C7PY00412E

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