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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Understanding Eu(3+) emission by using (15)N vibronic shifts.
1Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, People's Republic of China.
Inorganic Chemistry
|June 16, 2010
Summary
Hexanitritolanthanates offer insights into lanthanide ion energy levels. Using (15)N substitution aids in assigning complex electronic spectra, demonstrated for Europium (Eu).
Area of Science:
- Inorganic Chemistry
- Spectroscopy
- Materials Science
Background:
- Hexanitritolanthanates allow study of lanthanide ions (Ln(3+)) in T(h) site symmetry with 12-oxygen coordination.
- Electronic spectra of these compounds are complex and primarily vibronic.
- Assigning these spectra is challenging due to their extensive nature.
Purpose of the Study:
- To investigate the energy-level structures and crystal field of lanthanide ions in hexanitritolanthanates.
- To develop a method for assigning complex electronic emission spectra.
- To demonstrate the utility of isotopic substitution for spectral assignment.
Main Methods:
- Utilizing the high energy of nitrite ion (NO(2)(-)) vibrations.
- Employing (15)N substitution to differentiate spectral features.
- Analyzing the (5)D(0) emission spectra of Europium (Eu) as a case study.
Main Results:
- The (15)N substitution technique provides a spectral fingerprint in less-congested regions.
- This method facilitates the assignment of complex vibronic electronic emission spectra.
- The study successfully demonstrated the technique for Europium hexanitritolanthanate.
Conclusions:
- Isotopic substitution with (15)N is an effective strategy for assigning electronic emission spectra of hexanitritolanthanates.
- This approach simplifies the analysis of complex vibronic spectra.
- The findings enhance the understanding of lanthanide ion behavior in these materials.
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