Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 51, Pages 18634-18640Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201910749
Keywords
actuators; linear polymers; platinum; sustained release; topochemical polymerization
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Funding
- National Natural Science Foundation of China [21971126]
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Preparation of large single crystals of linear polymers for X-ray analysis is very challenging. Herein, we employ a coordination-driven self-assembly strategy to secure the appropriate head-to-tail alignment of anthracene moieties, and for the first time obtained large-sized Pt-based linear polymer crystals through a [4+4] cycloaddition of anthracene in a single-crystal to single-crystal fashion. Using X-ray diffraction to determine the polymer crystal structure, we found that both the polymerisation and depolymerisation steps proceed via a stable intermediate. Taking advantage of the temperature-dependent slow depolymerization, the Pt-based linear polymer showed potential as a sustained release anticancer drug platform. Utilizing the reversible contraction effect of unit-cell volume upon irradiation or heating, the stimuli-responsive crystals were hybridized with polyvinylidene fluoride to obtain a smart material with outstanding photoactuator performance.
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