Rational Design of a Uranyl Metal–Organic Framework for the Capture and Colorimetric Detection of Organic Dyes

Robert G. Surbella, Korey P. Carter, Trevor D. Lohrey, Dallas Reilly, Mark Kalaj, Bruce K. McNamara, Jon Schwantes, Rebecca J. Abergel

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

A new uranyl containing metal–organic framework, RPL-1: [(UO2)2(C28H18O8)] . H2O (RPL for Radiochemical Processing Laboratory), was prepared, structurally characterized, and the solid-state photoluminescence properties explored. Single crystal X-ray diffraction data reveals the structure of RPL-1 consists of two crystallographically unique three dimensional, interpenetrating nets with a 4,3-connected tbo topology. Each net contains large pores with an average width of 22.8 Å and is formed from monomeric, hexagonal bipyramidal uranyl nodes that are linked via 1,2,4,5-tetrakis(4-carboxyphenyl)benzene (TCPB) ligands. The thermal and photophysical properties of RPL-1 were investigated using thermogravimetric analysis and absorbance, fluorescence, and lifetime spectroscopies. The material displays excellent thermal stability and temperature dependent uranyl and TCPB luminescence. The framework is stable in aqueous media and due to the large void space (constituting 76 % of the unit cell by volume) can sequester organic dyes, the uptake of which induces a visible change to the color of the material.

Original languageEnglish (US)
Pages (from-to)13819-13825
Number of pages7
JournalChemistry - A European Journal
Volume26
Issue number61
DOIs
StatePublished - Nov 2 2020

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

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