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Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
Published on: February 6, 2020
Solvent-Directed Self-Assembly of Chiral Metal-Organic Cages and Coordination Polymers from Identical Components and
Xu-Zong Zhang1, Chuang-Wei Zhou1, Ya-Liang Lai1
1College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry, Jinan University, Guangzhou, Guangdong510632, China.
Abstract:
This work reports the solvent-directed synthesis, structures, and chiroptical properties of enantiomeric Zn(II) metal-organic cages (MOCs) and coordination polymers (CPs) assembled from identical subcomponents under the same conditions. Varying the DMF/MeOH ratio selectively produces either a discrete cubic cage (1-R/S) or a chain polymer (2-R/S). Both materials exhibit blue emission, with the MOCs demonstrating higher solid-state quantum yields. MOCs 1-R/S in poly(methyl methacrylate) films exhibit clear circularly polarized luminescence (CPL) (|glum| ≈ 4.0 × 10-4), whereas CPs 2-R/S display very weak CPL signals (|glum| ≈ 1.0 × 10-5). This work highlights that the supramolecular structure determines the CPL performance of excited-state chirality.
