Studies on dynamics and isomerism in supercooled photochromic compound Aberchrome 670 with the use of different experimental techniques

2018 ◽  
Vol 20 (26) ◽  
pp. 18009-18019 ◽  
Author(s):  
Wioleta Edyta Śmiszek-Lindert ◽  
Ewa Kamińska ◽  
Aldona Minecka ◽  
Dawid Heczko ◽  
Olga Madejczyk ◽  
...  
Keyword(s):  
Dielectric Spectroscopy ◽  
Experimental Techniques ◽  
Photochromic Compound ◽  
Broadband Dielectric Spectroscopy

Broadband Dielectric Spectroscopy (BDS) was applied to monitor Z–E isomerization in a fulgide-type photochromic compound, Aberchrome 670 (Ab670).

scholarly journals Broadband dielectric spectroscopy for monitoring temperature-dependent chloride ion motion in BiOCl plates

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Adrian Radoń ◽  
Dariusz Łukowiec ◽  
Patryk Włodarczyk
Keyword(s):  
Electrical Conductivity ◽  
Dielectric Spectroscopy ◽  
Low Frequency ◽  
Chloride Ion ◽  
Ion Source ◽  
Chloride Ions ◽  
Ion Concentration ◽  
Broadband Dielectric Spectroscopy ◽  
Free Chloride ◽  
Structure Rebuilding

AbstractThe dielectric properties and electrical conduction mechanism of bismuth oxychloride (BiOCl) plates synthesized using chloramine-T as the chloride ion source were investigated. Thermally-activated structure rebuilding was monitored using broadband dielectric spectroscopy, which showed that the onset temperature of this process was 283 K. This rebuilding was related to the introduction of free chloride ions into [Bi2O2]2+ layers and their growth, which increased the intensity of the (101) diffraction peak. The electrical conductivity and dielectric permittivity were related to the movement of chloride ions between plates (in the low-frequency region), the interplanar motion of Cl− ions at higher frequencies, vibrations of these ions, and charge carrier hopping at frequencies above 10 kHz. The influence of the free chloride ion concentration on the electrical conductivity was also described. Structure rebuilding was associated with a lower concentration of free chloride ions, which significantly decreased the conductivity. According to the analysis, the BiOCl plate conductivity was related to the movement of Cl− ions, not electrons.

Broadband dielectric spectroscopy on glycerol and CKN

1996 ◽  
Vol 176 (1) ◽  
pp. 33-41 ◽  
Author(s):  
A. Pimenov ◽  
P. Lunkenheimer ◽  
A. Loidl
Keyword(s):  
Dielectric Spectroscopy ◽  
Broadband Dielectric Spectroscopy
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