Azobenzene-cholesterol gelator

Azobenzene-based gelators have been studied extensively, because spectroscopic properties of the azobenzene moiety afford useful information on how the molecules are assembled and how the gel is formed. A typical sample was azobenzene-appended cholesterol gelators 22a-e, in which azobenzene 7T-7T Stacking and cholesterol-cholesterol interaction cooperatively stabilize the organogel structure as described in Sect. 2.1.1 (Fig. 15) [12,13]. Hydro-... 

Sakurai et al. have employed synchrotron SAXS to support a previously proposed model [54] for molecular arrangement in a helical fiber of an azobenzene-cholesterol-based gelator (6) [52a]. A hollow cylinder model exhibited better agreement with the experimental SAXS profile than a solid cylinder model. 

Scheme 12 Azobenzene-appended cholesterol LMOGs bearing a crown ether moiety display metal-cation sensitive gelation ability...

Scheme 13 Azobenzene-appended cholesterol LMOGs bearing pendant ammonium or diamine units as effective gelators of polar organic solvents...

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