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A novel Er–Hg compound: Preparation, structure and characterization
A novel Er–Hg compound: Preparation, structure and characterization
- Source :
- Journal of Molecular Structure. 1219:128580
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- A novel erbium-mercury complex [Er(HIA)3(H2O)2]n [0.5n (2,6-NA)](nHgBr4) (denoted as compound 1, HIA = isonicotinic acid; 2,6-NA = 2,6-Naphthalenedisulfonic acid) has been synthesized via a hydrothermal reaction and characterized by single crystal X-ray diffraction technique. Compound 1 features a one-dimensional (1-D) chain-like structure. A solid state photoluminescence measurement revealed that there are two upconversion emission peaks at 487 nm and 529 nm, of which the latter is stronger. These peaks can be assigned to the characteristic emission of 4f electron intrashell transitions of Er3+ ions 4F7/2 → 4I15/2 and 2H11/2 → 4I15/2. A energy transfer mechanism of photoluminescence emission was described using an energy state diagram of Er3+ ions and isonicotinic acid ligand. Compound 1 shows CIE chromaticity coordinates in the green region (0.1559, 0.5611). Compound 1 has a wide band gap of 2.05 eV, which was revealed by a solid-state UV/Vis diffuse reflection experiment.
- Subjects :
- Photoluminescence
010405 organic chemistry
Band gap
Organic Chemistry
Crystal structure
010402 general chemistry
Isonicotinic acid
01 natural sciences
Photon upconversion
0104 chemical sciences
Analytical Chemistry
Inorganic Chemistry
Crystallography
chemistry.chemical_compound
chemistry
Diffuse reflection
Chromaticity
Single crystal
Spectroscopy
Subjects
Details
- ISSN :
- 00222860
- Volume :
- 1219
- Database :
- OpenAIRE
- Journal :
- Journal of Molecular Structure
- Accession number :
- edsair.doi...........b566156b85ec085257048ac4762cdcfb
- Full Text :
- https://doi.org/10.1016/j.molstruc.2020.128580