Supermolecular bent configuration composed of achiral flexible liquid crystal trimers exhibiting chiral domains with opposite handedness

The Journal of Physical Chemistry. B
Haruna SasakiAtsushi Yoshizawa

Abstract

Chirality's effects on physical properties of materials and how chirality arises have persisted as attractive issues in chemistry. We prepared a homologous series of achiral liquid crystal trimers in which three phenylpyrimidine units are connected via flexible heptamethylene spacers. An equimolecular mixture of a trimer with a nematic (N) phase and that with smectic A (SmA), smectic C (SmC), and smectic B phases was found to exhibit an N phase, a SmC phase, and a B4 phase composed of chiral domains with opposite handedness. The chiral characteristics of the B4 phase were confirmed by uncrossing the polarizers in opposite directions. XRD measurements reveal that both SmC and B4 phases have an interdigitated layer structure. That molecular interdigitation might form a supermolecular bent configuration that can produce saddle splay curvature to drive the B4 phase.

References

Mar 15, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A EreminW Weissflog
Jun 6, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J EtxebarriaM B Ros
Jul 25, 2009·Science·L E HoughN A Clark
Jul 25, 2009·Science·L E HoughN A Clark
Apr 7, 2010·Physical Review Letters·Elisabetta A MatsumotoRandall D Kamien
Jun 23, 2011·Journal of the American Chemical Society·Dong ChenNoel A Clark
Sep 15, 2011·Topics in Current Chemistry·H Takezoe
Nov 9, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M CestariH Zimmermann
Feb 22, 2013·Advanced Materials·Mohamed AlaasarCarsten Tschierske
Mar 9, 2013·Chemical Communications : Chem Comm·Anna ZepEwa Gorecka
Apr 23, 2013·Angewandte Chemie·Ethan TsaiDavid M Walba
May 30, 2013·Angewandte Chemie·Takahiro UedaHideo Takezoe
Sep 6, 2013·Proceedings of the National Academy of Sciences of the United States of America·Dong ChenNoel A Clark
Nov 6, 2013·Nature Communications·V BorshchO D Lavrentovich
Oct 25, 2014·Nature Chemistry·Christian DresselCarsten Tschierske
Oct 30, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Dong ChenNoel A Clark

❮ Previous
Next ❯

Citations

May 11, 2016·The Journal of Physical Chemistry. B·Atsushi YoshizawaJun Yamamoto
Nov 10, 2015·Soft Matter·E RamouG H Mehl
Mar 8, 2016·Soft Matter·Haruna SasakiAtsushi Yoshizawa
Nov 15, 2016·Chemical Communications : Chem Comm·Mohamed AlaasarCarsten Tschierske
Sep 30, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Carsten Tschierske, Goran Ungar
Jun 14, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Jodie L Hann, Richard J Mandle

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.