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End Functional ROMP Polymers via Degradation of a Ruthenium Fischer Type Carbene

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2014
Author Nagarkar Amit, Kilbinger Andreas F.M.,
Project Functional Living Olefin Metathesis Polymers: Methodology Development and Applications
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Original article (peer-reviewed)

Journal Chemical Science
Volume (Issue) 5(12)
Page(s) 4687 - 4692
Title of proceedings Chemical Science
DOI 10.1039/C4SC02242D

Abstract

A new functional terminating agent leading to aldehyde end functional ROMP polymers is reported. The terminating agent acts via formation of a spontaneously degrading ruthenium Fischer type carbene, whose decomposition can be dramatically accelerated with a strong acid. The mechanism of degradation of the Fischer carbene has been elucidated with the help of monoisotopically resolved MALDI-ToF mass spectrometry of the resulting polymer. End functional polymers can therefore be exploited as versatile analytes giving information about the mechanism of small molecules acting on the polymer chain end. Further derivatization of the aldehyde end group was carried out using dopamine in a reductive amination step. A superparamagnetic iron oxide nanoparticle (SPION) binding polymer could thereby be prepared.
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