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- W2084933615 abstract "Developing polymer chemistries capable of on-demand, controlled depolymerization is an important tool in a broad variety of applications in science, technology, and industry. We report functionalized poly(caprolactone)s (PCL)s designed to allow on-demand and complete depolymerization through incorporation of pendant protected amino groups that, on deprotection, trigger nucleophilic attack and yield a single cyclic product. Two cleavable protecting groups were used to cap PCL: light sensititve o-nitrobenzyl alcohol (ONB) and tert-butyl carbamate (Boc) (for proof of concept). NMR confirmed that PCL-Boc degrades completely into the designed intramolecular cyclization products within a day upon deprotection. TEM visualization of particles made from PCL-ONB encapsulating iron oxide nanoparticles reveals complete disruption of nanoparticles and release of payload. This work demonstrates that intramolecular cyclization within the polymer backbone is an excellent route to accelerate polymer degradation by backbiting reactions into small fragments that should be easily cleared from the circulation." @default.
- W2084933615 created "2016-06-24" @default.
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- W2084933615 date "2013-05-03" @default.
- W2084933615 modified "2023-10-08" @default.
- W2084933615 title "Intramolecular Cyclization for Stimuli-Controlled Depolymerization of Polycaprolactone Particles Leading to Disassembly and Payload Release" @default.
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- W2084933615 doi "https://doi.org/10.1021/mz400129h" @default.
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