mz9b00936_si_001.pdf (1.57 MB)
Degradable Polyacetals/Ketals from Alternating Ring-Opening Metathesis Polymerization
journal contribution
posted on 2020-01-17, 14:04 authored by Benjamin R. Elling, Jessica K. Su, Yan XiaWe
report the synthesis of degradable polyacetals and polyketals with
controlled molecular weights and low dispersities using alternating
ring-opening metathesis polymerization (AROMP) of 1,1-disubstituted
cyclopropenes and dioxepins. Under optimized conditions, high degrees
of alternation and controlled polymerization were achieved between
nonpropagating cyclopropenes and low-strain dioxepins. The high degrees
of alternation allowed the resulting polymers to fully degrade into
small molecules under acidic conditions at variable rates depending
on the acetal/ketal structures. This synthetic strategy illustrates
the use of AROMP to incorporate functionalities into both the polymer
backbone as well as the side chains.
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Ring-Opening Metathesis Polymerizationalternationdisubstitutedpolyketalstrategyacidic conditionsAROMPsynthesisring-opening metathesis polymerizationlow-strain dioxepinsmoleculefunctionalitiepolymer backbonedispersitieside chainsPolyacetalDegradablenonpropagating cyclopropenesdegradable polyacetalsoptimized conditions
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