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Titolo:
TEM and SEM observations of super-structures constructed in organogel systems from a combination of boronic-acid-appended bola-amphiphiles with chiral diols
Autore:
Koumoto, K; Yamashita, T; Kimura, T; Luboradzki, R; Shinkai, S;
Indirizzi:
Kyushu Univ, Grad Sch Engn, Dept Chem & Biochem, Fukuoka 8128581, Japan Kyushu Univ Fukuoka Japan 8128581 Chem & Biochem, Fukuoka 8128581, Japan Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland Polish Acad Sci Warsaw Poland PL-01224 hys Chem, PL-01224 Warsaw, Poland
Titolo Testata:
NANOTECHNOLOGY
fascicolo: 1, volume: 12, anno: 2001,
pagine: 25 - 31
SICI:
0957-4484(200103)12:1<25:TASOOS>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUGAR-INTEGRATED GELATORS; ORGANIC LIQUIDS; CHOLESTERYL 4-(2-ANTHRYLOXY)BUTANOATE; GELLING AGENT; GELS; SOLVENTS; AGGREGATION; GELATION; BOLAAMPHIPHILES; POLYMERIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Koumoto, K Kyushu Univ, Grad Sch Engn, Dept Chem & Biochem, Fukuoka 8128581, Japan Kyushu Univ Fukuoka Japan 8128581 hem, Fukuoka 8128581, Japan
Citazione:
K. Koumoto et al., "TEM and SEM observations of super-structures constructed in organogel systems from a combination of boronic-acid-appended bola-amphiphiles with chiral diols", NANOTECHNOL, 12(1), 2001, pp. 25-31

Abstract

Two bola-amphiphilic alpha, omega -diboronic acids separated by a (CH2)(11) or (CH2)(12) group were synthesized. Complexation with chiral diols readily gave new amphiphiles end-capped with the chiral substituents. Some of these acted as good gelators of organic solvents. Transmission electron microscope and scanning electron microscope observations established that a variety of super-structures are created in the organogels, depending on the solvents and the structure of the chiral end-cap groups. In most cases, the fibrous aggregates, the network structure which is the driving-force for gelation, showed a helical higher-order structure reflecting the chirality of the end-cap groups. The results indicate that the combinatorial approach utilizing boronic acid functions and diol compounds is useful in creating a variety of new super-structures in the gel phase.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 13:28:05