Alkali-Polyketenenolat, ein Polyacetylen-Derivat / Alkali-Polyketene-Enolate, a Polyacetylene Derivative

1988 ◽  
Vol 43 (6) ◽  
pp. 671-676 ◽  
Author(s):  
Heinz P. Fritz ◽  
Peter David
Keyword(s):  
Epr Spectroscopy ◽  
Ac Conductivity ◽  
Nmr Spectra ◽  
Conductivity Measurements ◽  
Maximum Conductivity ◽  
Ac Conductivity Measurements ◽  
Cv Measurements ◽  
C Nmr ◽  
Paramagnetic Properties

An alkali-polyketene-enolate was made from polyketene by using aqueous bases MOH (M = Li, Na, K, Rb, Cs). The structure is proposed on the basis of IR and 13C NMR spectra, the paramagnetic properties were investigated by EPR spectroscopy. AC conductivity measurements show a maximum conductivity of 10-2 S cm- 1 (at 115 °C), where marked ionic participation is expected. Doping of the polyacetylene backbone with iodine gives no increase of conductivity; CV measurements indicate the presence of triiodide anions.

Charge carrier localization in investigated by ac conductivity measurements

1999 ◽  
Vol 11 (16) ◽  
pp. 3273-3290 ◽  
Author(s):  
A Seeger ◽  
P Lunkenheimer ◽  
J Hemberger ◽  
A A Mukhin ◽  
V Yu Ivanov ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Ac Conductivity ◽  
Conductivity Measurements ◽  
Carrier Localization ◽  
Ac Conductivity Measurements

scholarly journals AC-Conductivity measurements on γ-aluminium oxynitride

1995 ◽  
Vol 15 (11) ◽  
pp. 1157-1161 ◽  
Author(s):  
H.X. Willems ◽  
P.F. Van Hal ◽  
R. Metselaar ◽  
G. de With
Keyword(s):  
Ac Conductivity ◽  
Conductivity Measurements ◽  
Ac Conductivity Measurements ◽  
Aluminium Oxynitride

Synthesis and Lithium Ion Conductivity of MP2O7-Based Solid Electrolytes

2008 ◽  
Vol 388 ◽  
pp. 53-56 ◽  
Author(s):  
Akihiro Kato ◽  
Morihiro Saito ◽  
Jun Kuwano
Keyword(s):  
Ac Conductivity ◽  
Solid Electrolytes ◽  
Lithium Ion ◽  
Activation Energies ◽  
Ion Conductivity ◽  
Conductivity Measurements ◽  
Ac Conductivity Measurements ◽  
Lithium Ion Conductivity

Phase studies and ac-conductivity measurements were carried out in the compositions M0.8In0.2Li0.2P2O7 [MILP] (M=Sn, Zr, Ti). The bulk conductivities were of the order of ~10-5 Scm-1 at 623 K and higher in the order of TiILP≥ZrILP>SnILP. The activation energies, as expected, became lower in the order of ZrILP<TiILP<SnILP with increasing size of the bottleneck windows for hopping of the Li ions. The order of TiILP≥ZrILP>SnILP in bulk conductivities were not correlated with that of the activation energies probably because of the impureness of the ZrILP sample.

A Mechanistic Study of the Formation of Mesoporous Structures from in Situ AC Conductivity Measurements

Langmuir ◽  
2007 ◽  
Vol 23 (19) ◽  
pp. 9875-9881 ◽  
Author(s):  
Alfonso E. Garcia-Bennett ◽  
Ulrika Brohede ◽  
Robert P. Hodgkins ◽  
Niklas Hedin ◽  
Maria Strømme
Keyword(s):  
Ac Conductivity ◽  
Mechanistic Study ◽  
Conductivity Measurements ◽  
Ac Conductivity Measurements ◽  
Mesoporous Structures

scholarly journals Synthesis, Spectral and Thermal Behavior of Some New Four Coordinated Complexes

2012 ◽  
Vol 9 (4) ◽  
pp. 2483-2492 ◽  
Author(s):  
M. Montazerozohori ◽  
S. Khani ◽  
S. Joohari ◽  
S. A. Musavi
Keyword(s):  
Thermal Analysis ◽  
Weight Loss ◽  
Schiff Base ◽  
Thermal Behavior ◽  
Thermodynamic Parameters ◽  
Nmr Spectra ◽  
Molar Conductivity ◽  
Conductivity Measurements ◽  
Ft Ir ◽  
C Nmr

A new symmetric bidentate Schiff baseN, N′bis(4-fluorobenzal-dehydene)-1,2-diaminoethane(L) and its complexes with general formula MLX2(M= Zn(II), Cd(II) and Hg(II) and X=chloride, bromide, iodide, thiocyanate and azide) have been prepared. The ligand and complexes have been established by microanalysis, electronic, FT-IR,1H and13C NMR spectra, and by molar conductivity measurements. All compounds are non-electrolytes in chloroform or DMSO-d6. The thermal behavior of the complexes shows weight loss by decomposition of the anions and ligand segments in the subsequent steps. Some activation thermodynamic parameters such as E*, ∆H*, ∆S* and ∆G* were calculated from thermal analysis.

DC and AC Conductivity Measurements of Bi12TiO20Photorefractive Crystals Doped with Ag, P, Cu and Cd

2002 ◽  
Vol 41 (Part 1, No. 3B) ◽  
pp. 1860-1863 ◽  
Author(s):  
Vera Marinova ◽  
Ventseslav Sainov ◽  
Shiuan Huei Lin ◽  
Ken Yuh Hsu
Keyword(s):  
Ac Conductivity ◽  
Conductivity Measurements ◽  
Dc And Ac Conductivity ◽  
Ac Conductivity Measurements
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