Nematic 2,5-disubstituted thiophenesElectronic supplementary information (ESI) available: extensive synthetic information. See http://www.rsc.org/suppdata/jm/b2/b202073b/

Citations Over TimeTop 18% of 2002 papers

Abstract

A large number of new liquid crystals incorporating the 2,5-disubstituted thiophene ring have been prepared and their mesomorphic behaviour studied in order to systematically investigate the correlation between the molecular structure and mesomorphism of thiophene derivatives with different shapes, polarisability and polarity. As a consequence of these investigations we have prepared a new class of liquid crystals incorporating a 2,5-disubstituted thiophene ring and a conjugated trans-carbon–carbon double bond in the terminal chain. These novel thiophene derivatives are the first liquid crystals incorporating a 2,5-disubstituted thiophene ring to exhibit a nematic phase at room temperature. This enables the flexoelectric coefficients of a bent-shaped molecule to be measured directly and at room temperature for the first time to the authors' knowledge. Many of these new thiophenes exhibit a high birefringence and a high nematic clearing point and are of potential use as components of nematic mixtures in LCDs.

Related Papers

• → The structure of thiophene(1961)390 cited
• → Fundamental vibrations of thiophene and its deuterated derivatives(1965)181 cited
• → Synthesis of phenanthro[b]thiophenes(1980)76 cited
• → Angular polycyclic thiophenes containing two thiophene rings. I(1984)34 cited
• → Angular polycyclic thiophenes containing two thiophene rings. Part II(1984)15 cited