Spacers steroid-type

A well-studied group of organogelators are derived from anthracene and anthraquinone (4,5) [13], or steroids (6) [14], and include also compounds which contain both groups linked via a spacer (7,8) [15,16], Other organogelators of this type are an azobenzene-steroid derivatives (9) [17] and a chiral tetraline derivative (10) [18]. Aggregation of these compounds is based upon n-n stacking and solvophobic effects. Figure 2 presents some examples. 

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