Reticular Chemistry with Art: A Case Study of Olympic Rings-Inspired Metal-Organic Frameworks

J Am Chem Soc. 2022 Dec 7;144(48):22170-22177. doi: 10.1021/jacs.2c09832. Epub 2022 Nov 23.

Abstract

Herein, we demonstrate the successful utilization of reticular chemistry as an excellent designing strategy for the deliberate construction of a zirconium-tetracarboxylate metal-organic framework (MOF) inspired by the Olympic rings. HIAM-4017, with an unprecedented (4,8)-c underlying net topology termed jcs, was developed via insightful reconstruction of the rings and judicious design of a nonsymmetric organic linker. HIAM-4017 exhibits high porosity and excellent chemical and thermal stability. Furthermore, excited-state intramolecular proton transfer (ESIPT) was achieved in an isoreticular MOF, HIAM-4018, with a large Stokes shift of 155 nm as a result of introducing the hydroxyl group to the linker skeleton to induce OH···N interactions. Such interactions were analyzed thoroughly by employing the time-dependent density functional theory (TD-DFT). Because of their good thermal and chemical stability, and strong luminescence, nanosized HIAM-4017 and HIAM-4018 were fabricated and used for Cr2O72- detection. Both MOFs demonstrate excellent sensitivity and selectivity. This work represents a neat example of building structure- and property-specific MOFs guided by reticular chemistry.

MeSH terms

  • Density Functional Theory
  • Luminescence
  • Metal-Organic Frameworks*
  • Porosity
  • Zirconium

Substances

  • Metal-Organic Frameworks
  • Zirconium