Unusual temperature dependence of smectic layer structure associated with the nematic–smectic C phase transition in a hockey-stick-shaped four-ring compound

Lopamudra Chakraborty; Nirmalangshu Chakraborty; Dipika Debnath Sarkar; Nandiraju V. S. Rao; Satoshi Aya; Khoa Van Le; Fumito Araoka; Ken Ishikawa; Damian Pociecha; Ewa Gorecka; Hideo Takezoe

doi:10.1039/C3TC00759F

Unusual temperature dependence of smectic layer structure associated with the nematic–smectic C phase transition in a hockey-stick-shaped four-ring compound†

Lopamudra Chakraborty,^a Nirmalangshu Chakraborty,^a Dipika Debnath Sarkar,^a Nandiraju V. S. Rao,*^a Satoshi Aya,^b Khoa Van Le,^b Fumito Araoka,^b Ken Ishikawa,^b Damian Pociecha,^c Ewa Gorecka^c and Hideo Takezoe*^b

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* Corresponding authors

^a Department of Chemistry, Assam University, Silchar-788011, India
E-mail: drnvsrao@gmail.com

^b Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
E-mail: takezoe.h.aa@m.titech.ac.jp

^c Department of Chemistry, University of Warsaw, ul. Żwirki i Wigury 101, 02-089 Warsaw, Poland

Abstract

In a newly designed four-ring asymmetrical bent-core compound, we observed smectic-C-type diffuse layer reflection over the entire nematic temperature range. At the nematic–smectic C phase transition, a sharp layer reflection emerges in addition to the diffuse reflection with different layer tilt angles.

Journal of Materials Chemistry C

Unusual temperature dependence of smectic layer structure associated with the nematic–smectic C phase transition in a hockey-stick-shaped four-ring compound†

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Unusual temperature dependence of smectic layer structure associated with the nematic–smectic C phase transition in a hockey-stick-shaped four-ring compound

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