Jo, Seong-Yong and Kim, Byeong-Cheon and Jeon, Sung-Wook and Bae, Jae-Hyun and Walker, Martin and Wilson, Mark and Choi, Suk-Won and Takezoe, Hideo (2017) 'Enhancement of the helical twisting power with increasing the terminal chain length of nonchiral bent-core molecules doped in a chiral nematic liquid crystal.', RSC advances., 7 (4). pp. 1932-1935.
In this work, we prepared a series of nonchiral bent-core molecules with different terminal alkoxy chain lengths, and measured the helical twisting power (HTP) of the bent-core molecules doped in a chiral nematic liquid crystal (N*LC). We investigated the doping effect through the colour change and spectral change due to the Bragg (selective) reflection and found that the bent-core molecules with longer alkoxy chains showed stronger HTP under chiral circumstances such as N*LC. Namely, not only the axial conformations at wings linked to the bent central unit but also the length of the alkoxy chains at the terminal positions of the bent-core molecules play an important role in the resulting unusual chiral behaviour. A preliminary stochastic dynamics simulation to determine the distribution of the chirality order parameters was made, being consistent with the present experimental result.
|Full text:||(VoR) Version of Record|
Available under License - Creative Commons Attribution.
Download PDF (1344Kb)
|Publisher Web site:||http://dx.doi.org/10.1039/c6ra27158h|
|Publisher statement:||This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.|
|Date accepted:||21 December 2016|
|Date deposited:||17 January 2017|
|Date of first online publication:||12 January 2017|
|Date first made open access:||No date available|
Save or Share this output
|Look up in GoogleScholar|