Communications ogies of the films as well as the molecular structures are different from each other.In the present study, the new organic n-electron systems containing the oligothiophenes linked to the two triphenylamine moieties are found to exhibit interesting multiredox behaviors and to form stable amorphous glasses with relatively high Tgs, They form stable, uniform, and transparent films, constituting a novel family of photo-and electroactive amorphous molecular materials, and are expected to function as materials for use in photoreceptors in electrophotography and electroluminescent devices. Further studies are now in progress to synthesize new materials of this novel family and to examine the effect of n-conjugation length of the oligothiophene moieties on the glass-forming properties as well as molecular and solid-state properties.

Amphiphilic 1 ,Z-diol derivatives and their acetonides, incorporating rigid aromatic structural units, have been prepared. They exhibit liquid-crystalline behaviour and form stable monolayers at the air/water interface. The force-area isotherms obtained depend largely on the chemical structure of the rigid core.

X[nm] -Fig. 2. UVjVIS spectra of 5 (solid line) and 3 (dotted line). Angeu. Chrm. In/. Ed. Engl. 1993, 32, No. 8 Q VCH Ver1ogsgesellschoft mbH, 0.69451 Weinbrim, 1993 0S7#-OR33~93~OSO~-ll~7 3 lO.O~+.ZS/O

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