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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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Temperature dependent optical spectroscopy: A study of holmium diphenanthroline nitrate in DMF
Vesselin Petrov1, Nina Danchova1, Stoyan Gutzov1
1Sofia University "St. Kliment Ohridski", Department of Physical Chemistry, James Bourchier Blvd. 1, 1164, Sofia, Bulgaria.
Abstract:
A detailed spectroscopic study of the optical properties of Ho(phen)2(NO3)3 complex is presented. The substance is characterized by UV/Vis spectroscopy, IR - spectroscopy, chemical analysis and X - Ray diffraction. Temperature dependent absorption spectra of Ho(phen)2(NO3)3 in DMF are discussed. A hyperchromic effect at elevated temperatures of the electric dipole absorption transition 5I8→5G6 at 452 nm is observed and a quantitative explanation in the framework of the coth(x) theory of absorption line broadening is suggested. The thermal depopulation of the 5I8 electronic level also is discussed.
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