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Diamide gelators

Fig. 6 Diamide gelators with even and odd numbers of bridging methylene groups and indicated self-assembly by amide-amide hydrogen bonding... Fig. 6 Diamide gelators with even and odd numbers of bridging methylene groups and indicated self-assembly by amide-amide hydrogen bonding...
Schemes Preparation of chiral even (29-Me) and odd (30-Me) diamide gelators ... Schemes Preparation of chiral even (29-Me) and odd (30-Me) diamide gelators ...
The introduction of stereogenic centers in this type of gelator results in new morphologies of gel fibers such as twisted ribbons and coiled coils. Chiral diamides 29-Me and 30-Me were prepared by acylation of the a,co-polymethylene diamines with (2S)-2-methyldodecanoyl chloride in a two-phase ether-water system in the presence of sodium bicarbonate (Scheme 8). Formation of twisted ribbons and coiled coils was explained by chiral van der Waals interactions between terminal aUcanoic chains induced by introduction of chiral centers. [Pg.88]

Diamide 22 and diurea derivative 23 synthesized from trans-l,2-cyclo-hexanediamine exhibit excellent gelation ability, comparable to that of the... [Pg.639]

See other pages where Diamide gelators is mentioned: [Pg.77]    [Pg.83]    [Pg.221]    [Pg.77]    [Pg.83]    [Pg.221]    [Pg.37]    [Pg.87]    [Pg.88]    [Pg.88]    [Pg.640]    [Pg.42]   
See also in sourсe #XX -- [ Pg.83 ]



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