Hh. Tso et al., NOVEL SUPRAMOLECULAR LIQUID-CRYSTALLINE COMPLEXES DERIVED FROM 5-N-DECYL-SUBSTITUTED THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC AND THIOPHENE-2-CARBOXYLIC ACIDS, New journal of chemistry, 22(8), 1998, pp. 771-773
A convenient route to thieno[3,2-b]thiophene-2-carboxyaldehyde (1) for
the synthesis of new 5-n-decylthieno[3,2-b]thiophene-2-carboxylic aci
d (10) is described. A class of novel supramolecular liquid-crystallin
e complexes are formed starting from 10 or 5-n-decylthiophene-2-carbox
ylic acids and stilbazoles, through intermolecular hydrogen bonding.