Abstract
AbstractThree series of novel chiral tetraphenylethenes have been prepared: citronellyl‐derived ethers 1a, b, lactate‐derived ethers 2d, g, h, i and lactate‐derived esters 3a–c, e–h. Helical twisting powers (HTPs) were determined for those derivatives of 1–3, which were sufficiently miscible with the nematic host 5CB 13 or the discotic nematic host hexayne 14. For binary solutions HTP values of 5.7–10.4 µm−1 for 13/1, 12.8–16.5 µm−1 for 13/2, 8.0–28.7 µm−1 for 13/3 and 2.1–2.9 µm−1 for hexayne 14/3 were determined, indicating a much stronger interaction between the C4‐symmetrical propeller‐shaped tetraphenylethenes 1–3 with the calamitc host 5CB 13 than with the discotic C6‐symmetrical propeller‐shaped host hexayne 14. Copyright © 2009 John Wiley & Sons, Ltd.
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