Fabrication of Large Single Crystals for Platinum‐Based Linear Polymers with Controlled‐Release and Photoactuator Performance. Issue 51 (4th November 2019)

• Record Type: Journal Article
• Authors: Yu, Qi; Li, Mingmin; Gao, Jia; Xu, Peixin; Chen, Qizhe; Xing, Dong; Yan, Jie; Zaworotko, Michael J.; Xu, Jun; Chen, Yao; Cheng, Peng; Zhang, Zhenjie
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 51(2019)
• Page Start: 18634
• Page End: 18640
• Publication Date: 2019-11-04
• Subjects: actuators -- linear polymers -- platinum -- sustained release -- topochemical polymerization; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201910749
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: 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. Abstract : Strong enough to bend : A coordination driven self‐assembly strategy secures the appropriate head‐to‐tail alignment of anthracene moieties gave large Pt‐based linear polymer crystals through a [4+4] cycloaddition of anthracene in a single‐crystal to single‐crystal fashion. The reversible contraction of unit‐cell volume upon irradiation or heating gave a photoactuator.