Aggregation of dextran hydrophobically modified by sterically-hindered phenols in aqueous solutions: Aggregates vs. single molecules

被引：0

作者：

Filippov, Sergey K. ^{[1
]}

Lezov, Andrey V. ^{[2
]}

Sergeeva, Olga Yu. ^{[3
]}

Olifirenko, Alexey S. ^{[3
]}

Lesnichin, Stepan B. ^{[3
]}

Domnina, Nina S. ^{[3
]}

Komarova, Elena A. ^{[3
]}

Almgren, Mats ^{[4
]}

Karlsson, Göran ^{[4
]}

Štepanek, Petr ^{[1
]}

机构：

[1] Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic

[2] V.A. Fock Institute of Physics, St. Petersburg State University, Uljanovskaja ul.1, 198504 St. Petersburg, Russia

[3] Chemical Faculty, St. Petersburg State University, University av. 26, 198504 St. Petersburg, Russia

[4] Department of Physical and Analytical Chemistry, Uppsala University, Box 579, SE-75123 Uppsala, Sweden

来源：

European Polymer Journal | 2008年 / 44卷 / 10期

关键词：

The hydrodynamic properties of dextrans hydrophobically modified by sterically-hindered phenols in aqueous solution were characterized by a combination of Cryogenic Transmission Electron Microscopy (Cryo-TEM); fluorescent spectroscopy; and Dynamic Light Scattering (DLS). All solutions investigated contained aggregates the structure; shape; and critical aggregation concentration of which are influenced by the amount of the inserted phenol groups in the polymer matrix. We found that increasing of temperature enhances aggregation. It was established that the critical aggregation concentration could be well approximated by a logarithmic function of the substitution degree of the glycoside units. The results suggest that the proportion of aggregates is nevertheless negligible in comparison with the proportion of single molecules. Crown Copyright © 2008;

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学科分类号：

摘要：

Journal article (JA)

引用

页码：3361 / 3369

共 5 条

[1] Aggregation of dextran hydrophobically modified by sterically-hindered phenols in aqueous solutions: Aggregates vs. single molecules
Filippov, Sergey K.
Lezov, Andrey V.
Sergeeva, Olga Yu
Olifirenko, Alexey S.
Lesnichin, Stepan B.
Domnina, Nina S.
Komarova, Elena A.
Almgren, Mats
Karlsson, Goeran
Stepanek, Petr
EUROPEAN POLYMER JOURNAL, 2008, 44 (10) : 3361 - 3369
[2] Aggregation of dextran hydrophobically modified by sterically hindered phenols
Filippov, S. K.
Komolov, A. S.
Sergeeva, O. Yu.
Olifirenko, A. S.
Lesnichin, S. B.
Komarova, E. A.
Loginov, B. A.
Domnina, N. S.
Lezov, A. V.
POLYMER SCIENCE SERIES A, 2009, 51 (02) : 161 - 167
[3] Molecular properties of hybrid macromolecular antioxidants: Dextran hydrophobically modified by sterically hindered phenols
S. K. Filippov
B. Porsch
O. Yu. Sergeeva
A. S. Olifirenko
S. B. Lesnichin
N. S. Domnina
E. A. Komarova
A. V. Lezov
V. M. Garamus
Z. Walterova
P. Štepanek
The European Physical Journal E, 2011, 34
[4] Molecular properties of hybrid macromolecular antioxidants: Dextran hydrophobically modified by sterically hindered phenols
Filippov, S. K.
Porsch, B.
Sergeeva, O. Yu.
Olifirenko, A. S.
Lesnichin, S. B.
Domnina, N. S.
Komarova, E. A.
Lezov, A. V.
Garamus, V. M.
Walterova, Z.
Stepanek, P.
EUROPEAN PHYSICAL JOURNAL E, 2011, 34 (11):
[5] Characterization of Aggregates formed by Hydrophobically Modified Cationic Dextran and Sodium Alkyl Sulfates in Salt-Free Aqueous Solutions
Nichifor, Marieta
Bastos, Margarida
Lopes, Sonia
Lopes, Antonio
JOURNAL OF PHYSICAL CHEMISTRY B, 2008, 112 (49): : 15554 - 15561

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