Home / Publications / Intramolecular Ordering Stopped by Classification. A UV and Raman Study of Poly[n-butyl-n-hexylsilylene] Phase Transitions

Intramolecular Ordering Stopped by Classification. A UV and Raman Study of Poly[n-butyl-n-hexylsilylene] Phase Transitions

Larisa Aleksandrovna Leites 1
Larisa Aleksandrovna Leites
, 
Sergei Sergeevich Bukalov 1
Sergei Sergeevich Bukalov
, 
Robert West 2
Robert West
10.1070/MC1994v004n06ABEH000414
Published 1994-12-31
Communication , Volume 4, Issue 6, 205-206
6
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Leites L. A., Bukalov S. S., West R. Intramolecular Ordering Stopped by Classification. A UV and Raman Study of Poly[n-butyl-n-hexylsilylene] Phase Transitions // Mendeleev Communications. 1994. Vol. 4. No. 6. pp. 205-206.
GOST all authors (up to 50) Copy
Leites L. A., Bukalov S. S., West R. Intramolecular Ordering Stopped by Classification. A UV and Raman Study of Poly[n-butyl-n-hexylsilylene] Phase Transitions // Mendeleev Communications. 1994. Vol. 4. No. 6. pp. 205-206.
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TY - JOUR
DO - 10.1070/MC1994v004n06ABEH000414
UR - https://mendcomm.colab.ws/publications/10.1070/MC1994v004n06ABEH000414
TI - Intramolecular Ordering Stopped by Classification. A UV and Raman Study of Poly[n-butyl-n-hexylsilylene] Phase Transitions
T2 - Mendeleev Communications
AU - Leites, Larisa Aleksandrovna
AU - Bukalov, Sergei Sergeevich
AU - West, Robert
PY - 1994
DA - 1994/12/31
PB - Mendeleev Communications
SP - 205-206
IS - 6
VL - 4
ER -
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@article{1994_Leites,
author = {Larisa Aleksandrovna Leites and Sergei Sergeevich Bukalov and Robert West},
title = {Intramolecular Ordering Stopped by Classification. A UV and Raman Study of Poly[n-butyl-n-hexylsilylene] Phase Transitions},
journal = {Mendeleev Communications},
year = {1994},
volume = {4},
publisher = {Mendeleev Communications},
month = {Dec},
url = {https://mendcomm.colab.ws/publications/10.1070/MC1994v004n06ABEH000414},
number = {6},
pages = {205--206},
doi = {10.1070/MC1994v004n06ABEH000414}
}
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Leites, Larisa Aleksandrovna, et al. “Intramolecular Ordering Stopped by Classification. A UV and Raman Study of Poly[n-butyl-n-hexylsilylene] Phase Transitions.” Mendeleev Communications, vol. 4, no. 6, Dec. 1994, pp. 205-206. https://mendcomm.colab.ws/publications/10.1070/MC1994v004n06ABEH000414.

Abstract

UV and Raman data show that a prolonged first-order phase transition of PBHS which begins at ca. –25 °C consists of a gradual transformation on cooling of a disordered macromolecule main chain into more ordered, probably helical conformation and then into an all-trans conformation with accompanying crystallization. The polarizability-driven transition from the helical to the all-trans conformation does not proceed to completion, but ceases at ca. –60 °C due to a quasi-second-order phase transition of a glassification type which “freezes out” some thermal molecular motions necessary for this transformation to occur. Even at –240 °C the polymer exists as a mixture of two forms.

References

4.
Poly(di-n-pentylsilane). The spectral consequences of a helical conformation in the solid state
Miller R.D., Farmer B.L., Fleming W., Sooriyakumaran R., Rabolt J.
Journal of the American Chemical Society, 1987
6.
Vibrational and electronic spectra and the structure of crystalline poly(dimethylsilane)
Leites L.A., Bukalov S.S., Yadritzeva T.S., Mokhov M.K., Antipova B.A., Frunze T.M., Dement'ev V.V.
Macromolecules, 1992
7.
10.1070/MC1994v004n06ABEH000414_bib7
Leites
Polym. Sci., 1992
8.
R. Menescal, J. Eveland, R. West, L. A. Leites, S. S. Bukalov, T. S. Yadritzeva and M. Blazso, Macromolcules, 1994, in press.
9.
L. A. Leites, S. S. Bukalov, L. E. Vinogradova, T. S. Yadritseva, R. Menescal and R.West; to be published.
10.
Studies of the conformation and packing of polysilanes
KariKari E.K., Greso A.J., Farmer B.L., Miller R.D., Rabolt J.F.
Macromolecules, 1993
11.
Solid-state structures, phase transitions, and thermochromism in polysilylene copolymers
Schilling F.C., Lovinger A.J., Davis D.D., Bovey F.A., Zeigler J.M.
Macromolecules, 1993
12.
10.1070/MC1994v004n06ABEH000414_bib12
Tager
Vysokomol. Soedin. Ser. A, 1988
13.
10.1070/MC1994v004n06ABEH000414_bib13
Keith
1965
14.
Bukalov S.S., Leites L.A., Morozov V.A., West R., Menescal R.
Mendeleev Communications, 1994
15.
10.1070/MC1994v004n06ABEH000414_bib15
Schweizer
Silicon- Based Polymer Science, 1990