Star PolyMOCs with Diverse Structures, Dynamics, and Functions by Three-Component Assembly

• Main Authors: Wang, Yufeng (Contributor), Gu, Yuwei (Contributor), Keeler, Eric George (Contributor), Park, Jiwon (Contributor), Griffin, Robert Guy (Contributor), Johnson, Jeremiah A. (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Chemistry (Contributor), Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) (Contributor)
• Format: Article
• Language: English
• Published: Wiley Blackwell, 2018-01-26T16:35:49Z.
• Subjects: Article
• Online Access: Get fulltext

 We report star polymer metal-organic cage (polyMOC) materials whose structures, mechanical properties, functionalities, and dynamics can all be precisely tailored through a simple three-component assembly strategy. The star polyMOC network is composed of tetra-arm star polymers functionalized with ligands on the chain ends, small molecule ligands, and palladium ions; polyMOCs are formed via metal-ligand coordination and thermal annealing. The ratio of small molecule ligands to polymer-bound ligands determines the connectivity of the MOC junctions and the network structure. The use of large M 12 L 24 MOCs enables great flexibility in tuning this ratio, which provides access to a rich spectrum of material properties including tunable moduli and relaxation dynamics.