To enhance the π stacking ability of tetracenes, we have substituted the lateral rings to obtain elongated structures, capable of self-aggregation along the long axis of the nucleus. Such a property was observed with 2,3-di-n-decyloxyanthracene (DDOA) as described in recent publications. 3 The substitution in 2,3 positions by alkoxy chains such as O-n-C 10 H 21 and O-n-C 16 H 33 would lead to didecyloxytetracene (DDOT) and dihexadecyloxytetracene ( ...