Macromolecules, volume 37, issue 15, pages 5490-5494

New Chiral Nematic Ionomers Containing Metal Ions

Barmatov E.B.
Barmatova M.V
Moon Bong Seok
Jae Geun Park
Publication typeJournal Article
Publication date2004-06-30
Journal: Macromolecules
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor5.5
ISSN00249297, 15205835
Materials Chemistry
Organic Chemistry
Inorganic Chemistry
Polymers and Plastics
Abstract
The series of new chiral nematic ionomers containing 0.7-9.0 mol % ions of alkali metals Na and transition metals Co(II) were synthesized by the exchange reaction between chiral nematic N* functionalized liquid crystalline (LC) copolymers bearing the phenylbenzoate mesogenic fragment, optically active moiety (derivatives of cholesterol), and carboxylic groups with acetate of cobalt and sodium. For ionomers containing 0.7-9 mol % sodium ions the melting point is independent of temperature. At the same time, the incorporation of cobalt ions in the polymer matrix leads to decreasing of clearing temperature and destruction of the mesophase at the concentration of transition metal higher than 6 mol %. All ionomers produce the chiral nematic phase, which is characterized by selective light reflection the spectral range 500-2000 nm. The introduction of even small amounts of metal ions to functionalized LC copolymer prevents untwisting of pitch of the helix with decreasing the temperature. This tendency is related to a limited translational mobility of side groups in the LC copolymer, which produce helical structure, due to the physical network as formed by charged groups.

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GOST |
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GOST Copy
Barmatov E. et al. New Chiral Nematic Ionomers Containing Metal Ions // Macromolecules. 2004. Vol. 37. No. 15. pp. 5490-5494.
GOST all authors (up to 50) Copy
Barmatov E., Barmatova M., Moon B. S., Jae Geun P. New Chiral Nematic Ionomers Containing Metal Ions // Macromolecules. 2004. Vol. 37. No. 15. pp. 5490-5494.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/ma034936e
UR - https://doi.org/10.1021%2Fma034936e
TI - New Chiral Nematic Ionomers Containing Metal Ions
T2 - Macromolecules
AU - Barmatov, E.B.
AU - Barmatova, M.V
AU - Moon, Bong Seok
AU - Jae Geun, Park
PY - 2004
DA - 2004/06/30 00:00:00
PB - American Chemical Society (ACS)
SP - 5490-5494
IS - 15
VL - 37
SN - 0024-9297
SN - 1520-5835
ER -
BibTex |
Cite this
BibTex Copy
@article{2004_Barmatov
author = {E.B. Barmatov and M.V Barmatova and Bong Seok Moon and Park Jae Geun},
title = {New Chiral Nematic Ionomers Containing Metal Ions},
journal = {Macromolecules},
year = {2004},
volume = {37},
publisher = {American Chemical Society (ACS)},
month = {jun},
url = {https://doi.org/10.1021%2Fma034936e},
number = {15},
pages = {5490--5494},
doi = {10.1021/ma034936e}
}
MLA
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MLA Copy
Barmatov, E.B., et al. “New Chiral Nematic Ionomers Containing Metal Ions.” Macromolecules, vol. 37, no. 15, Jun. 2004, pp. 5490-5494. https://doi.org/10.1021%2Fma034936e.
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