Search

Your search keyword '"Song, Huiyu"' showing total 2 results
Start Over Author "Song, Huiyu" Topic amplitude
2 results on '"Song, Huiyu"'

1. Photoacoustic spectroscopy study on intramolecular energy transfer and relaxation processes of Tb(III) complexes

Author

Song Huiyu, Su Qingde, and Wu Ronghu

Subjects
Crystallography, Luminescence, Chemistry, Energy transfer, Spectrum Analysis, Relaxation (NMR), Phase (waves), Analytical chemistry, Atomic and Molecular Physics, and Optics, Spectral line, Analytical Chemistry, Amplitude, Energy Transfer, Intramolecular force, Terbium, Instrumentation, Photoacoustic spectroscopy, Spectroscopy, Mathematics
Abstract

The photoacoustic (PA) amplitude spectra and luminescence spectra of different Tb(III) complexes (Tb(AA)3·2H2O, Na[Tb(AA)4], Tb(AA)3bpy and Tb(AA)3phen) have been measured, and the PA phase shifts of the different complexes calculated. Combined with the luminescence spectra, the PA amplitude spectra reflected the variation of the luminescence efficiency and the PA phase is directly relative to the relaxation processes. According to the variation of the luminescence efficiency and the phase shift, the intramolecular energy transfer and relaxation processes of different Tb(III) complexes were discussed.

Published
2000

2. The relaxation study of dibenzoylmethane in different molecules by photoacoustic amplitude and phase spectra

Author

Song, Huiyu, Yu, Xijuan, Zhao, Huazhang, and Su, Qingde

Subjects
*PHOTOACOUSTIC spectroscopy, *DIBENZOYLMETHANE
Abstract

The amplitude and the phase of the photoacoustic (PA) signal generated in Nd(DBM)3 and Nd(DBM)3·Phen (DBM: dibenzoylmethane; Phen: 1,10-phenanthroline) complex powders were examined. By using PA amplitude and phase spectra, together with IR and fluorescence spectra, the intramolecular relaxation processes and the fluorescence properties of DBM were studied. And a new method to calculate the relaxation time of the ligand of rare earth complexes was presented. Compared with the free ligand DBM, the relaxation time of DBM in Nd(DBM)3 and Nd(DBM)3·Phen complexes calculated by the new method had the order: free ligand>in Nd(DBM)3>in Nd(DBM)3·Phen. The fluorescence spectra verified the validity of the new method. The intramolecular energy transfer models were established on the basis of the calculated results and the fluorescence spectra. [Copyright &y& Elsevier]

Published
2002
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results