Studies of relaxation processes in organic glasses at low temperatures using the hole-burning spectroscopy technique: Verification of applicability limits of the model of two-level systems

2001 ◽  
Vol 91 (3) ◽  
pp. 461-469 ◽  
Author(s):  
B. M. Kharlamov
Keyword(s):  
Low Temperatures ◽  
Hole Burning ◽  
Relaxation Processes ◽  
Spectroscopy Technique ◽  
Organic Glasses ◽  
Two Level Systems

Features of radiothermoluminescence of polypropylene and ethylene propylenediene elastomer SKEPT-4044 compositions with nanoscale metal-containing fillers

2020 ◽  
pp. 66-73
Author(s):  
A.M. Magerramov ◽  
◽  
N.I. Kurbanova ◽  
M.N. Bayramov ◽  
N.A. Alimirzoyeva ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Molecular Mobility ◽  
Fe3o4 Nanoparticles ◽  
Low Temperatures ◽  
Frost Resistance ◽  
Relaxation Processes ◽  
Ethylene Propylene ◽  
Temperature Range ◽  
Β Relaxation

Using radiothermoluminescence (RTL), the molecular mobility features in the temperature range of 77-300 K were studied for the polypropylene (PP)/ethylene propylene diene elastomer SKEPT-4044 with NiO, Cu2O and Fe3O4 nanoparticles (NPs) based on ABS-acrylonitrile butadiene or SCS-divinyl styrene matrices. It has been shown that the introduction of nanofillers in PP significantly affects the nature and temperature of γ- and β-relaxation processes, while the region of manifestation of the β-process noticeably shifts to the region of low temperatures. Composites with Cu2O NPs have a higher β-transition temperature Tβ than composites with other NPs. It was found that PP/SKEPT-4044 composites with Cu2O NPs with a dispersion of 11-15 nm and acrylonitrile butadiene thermoplastics have optimal frost resistance compared to other compositions.

scholarly journals Effects of the Distributions of Energy or Charge Transfer Rates on Spectral Hole Burning in Pigment–Protein Complexes at Low Temperatures

2011 ◽  
Vol 115 (50) ◽  
pp. 15098-15109 ◽  
Author(s):  
Nicoleta Herascu ◽  
Somaya Ahmouda ◽  
Rafael Picorel ◽  
Michael Seibert ◽  
Ryszard Jankowiak ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Low Temperatures ◽  
Protein Complexes ◽  
Hole Burning ◽  
Spectral Hole Burning ◽  
Transfer Rates ◽  
Spectral Hole ◽  
Pigment Protein Complexes

Picosecond photon echo and optical hole burning studies of chromophores in organic glasses

1987 ◽  
Vol 38 (1-6) ◽  
pp. 9-14 ◽  
Author(s):  
M. Berg ◽  
C.A. Walsh ◽  
L.R. Narasimhan ◽  
M.D. Fayer
Keyword(s):  
Photon Echo ◽  
Hole Burning ◽  
Organic Glasses

A conjecture of nonphotochemical hole burning in organic glasses

1981 ◽  
Vol 75 (8) ◽  
pp. 3973-3976 ◽  
Author(s):  
Joseph Klafter ◽  
Robert Silbey
Keyword(s):  
Hole Burning ◽  
Organic Glasses

The Role of Organic Glasses incis/transPhotoisomerization at Low Temperatures

2009 ◽  
Vol 4 (5) ◽  
pp. 754-760 ◽  
Author(s):  
Yao-Peng Zhao ◽  
Lan-Ying Yang ◽  
Charles J. Simmons ◽  
Robert S. H. Liu
Keyword(s):  
Low Temperatures ◽  
Organic Glasses
Sign in / Sign up

Export Citation Format

Share Document