Polymers Journal

A small, low-cost, self-produced photometer is implemented into a synthesis robot and combined with a modified UV chamber to enable automated sampling and online characterization. In order to show the usability of the new approach, two different reversible addition–fragmentation chain transfer (RAFT) polymers were irradiated with UV light. Automated sampling and subsequent characterization revealed different reaction kinetics depending on polymer type. Thus, a long initiation time (20 min) is required for the end-group degradation of poly(ethylene glycol) ether methyl methacrylate (poly(PEGMEMA)), whereas poly(methyl methacrylate) (PMMA) is immediately converted. Lastly, all photometric samples are characterized via size-exclusion chromatography using UV and RI detectors to prove the results of the self-produced sensor and to investigate the molar mass shift during the reaction.

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Improvement of high-throughput experimentation using synthesis robots by the implementation of tailor-made sensors

Timo Schuett 1,2 , Manuel Wejner 2,3, Julian Kimmig 1,2, Stefan Zechel 1,2, Timm Wilke 2,3 and Ulrich S. Schubert 1,2

1. Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany

2. Jena Center of Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany

3. Institute for Inorganic Chemistry and Analytical Chemistry, Chemistry Education, Friedrich Schiller University Jena, August-Bebel-Strasse 2, 07743 Jena, Germany

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