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Functional organogels from lipophilic L-glutamide derivative immobilized on cyclotriphosphazene core

Published online by Cambridge University Press:  01 May 2006

Tomohiro Shirosaki ,
Saleh Chowdhury ,
Makoto Takafuji ,
Dzhamil Alekperov ,
Galina Popova ,
Hiroshi Hachisako  and
Hirotaka Ihara
Tomohiro Shirosaki
Affiliation:
Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto 860-8555, Japan
Saleh Chowdhury
Affiliation:
Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto 860-8555, Japan
Makoto Takafuji
Affiliation:
Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto 860-8555, Japan
Dzhamil Alekperov
Affiliation:
Mendeleyev University of Chemical Technology of Russia, Moscow 125047, Russia
Galina Popova
Affiliation:
Mendeleyev University of Chemical Technology of Russia, Moscow 125047, Russia
Hiroshi Hachisako
Affiliation:
Department of Applied Chemistry, Sojo University, Kumamoto 860-0082, Japan
Hirotaka Ihara*
Affiliation:
Department of Applied Chemistry and Biochemistry, Kumamoto University, Kumamoto 860-8555, Japan
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

A novel cyclotriphosphazene-based low-molecular weight organogelator was prepared by immobilization of six dialkylated L-glutamide derivatives on a cyclotriphosphazene core, and its ability as a self-assembling organogelator was investigated. The organogelator exhibited enhanced gelation ability and chirality, and thixotropic property for self-restoring to a gel state; this was compared to the corresponding L-glutamide-derived organogelator without the core. The gelation test, transmission electron microscopy observation, and circular dichroism (CD) spectral study showed that the gelation and aggregation ability were enhanced by immobilization onto the cyclotriphosphazene core. Gels in chloroform and cyclohexane-ethanol (95:5) mixture showed an unusual thixotropic property.

Keywords

NanostructureSol-gelSelf-assembly
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 5 , May 2006 , pp. 1274 - 1278
Copyright
Copyright © Materials Research Society 2006

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