Synthesis, structure, photophysical properties, and energy transfer mechanism of an erbium–mercury compound

A hydrothermal reaction leads to the formation of a novel erbium–mercury compound [Er(IA)3(H3O)(H2O)] n (0.5nHg2I6) (1) (HIA = isonicotinic acid). The compound has been characterized by single-crystal X-ray diffraction. It is characteristic of a one-dimensional chain-like structure and a two-dimensi...

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Bibliographic Details
Published inJournal of chemical research Vol. 44; no. 11-12; pp. 727 - 732
Main Author Chen, Wen-Tong
Format Journal Article
LanguageEnglish
Published London, England SAGE Publications 01.11.2020
Sage Publications Ltd
Subjects
Chromaticity
Compound A
Crystal structure
Energy transfer
Erbium compounds
Hydrothermal reactions
Mercury compounds
Photoluminescence
Single crystals
Solid state
Upconversion
lanthanide
erbium
photoluminescence
Commission Internationale de I’Éclairage
supermolecule
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Summary:A hydrothermal reaction leads to the formation of a novel erbium–mercury compound [Er(IA)3(H3O)(H2O)] n (0.5nHg2I6) (1) (HIA = isonicotinic acid). The compound has been characterized by single-crystal X-ray diffraction. It is characteristic of a one-dimensional chain-like structure and a two-dimensional supramolecular layer. A solid-state photoluminescence experiment reveals that this compound displays upconversion green photoluminescence. The photoluminescence emission peaks can be attributed to the 4G11/2 → 4I15/2, 4F7/2 → 4I15/2, and 2H11/2 → 4I15/2 of the Er3+ ions. The energy transfer mechanism is consistent with the energy-level diagrams of the erbium ions and isonicotinic acid ligand. This compound possesses Commission Internationale de I'Éclairage chromaticity coordinates of 0.1755 and 0.5213. A solid-state diffuse reflectance measurement reveals that this compound features a narrow optical band gap of 1.97 eV.
ISSN:1747-5198
2047-6507
DOI:10.1177/1747519820915579