Inducing Planar Orientation in Side-Chain Liquid-Crystalline Polymer Systems via Interfacial Control

Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]
Shusaku Nagano

Abstract

For efficient photoresponses of liquid-crystal (LC) azobenzene (Az) polymer systems, planar LC orientation of the Az mesogenic group is required because the light irradiation process usually occurs with normal incidence to the film surface. However, LC molecules with a rodlike shape tend to orient perpendicularly to the film surface according to the excluded volume effect theory. This review introduces new approaches for inducing planar orientation in side-chain LC Az polymer films via interface and surface molecular designs. The planar orientation offers efficient in-plane photoalignment and photoswitching to hierarchical LC architectures from molecular LC mesogens and LC phases to mesoscopic microphase-separated structures. These approaches are expected to provide new concepts and possibilities in new LC polymer devices.

References

Jul 7, 1986·Physical Review Letters·B M OckoM Deutsch
Jan 5, 2002·Chemical Reviews·Kunihiro Ichimura
Aug 24, 2006·Journal of the American Chemical Society·Haifeng YuTomiki Ikeda
Mar 8, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Takayuki UekusaTakahiro Seki
Feb 18, 2010·ACS Applied Materials & Interfaces·Fabian Rios, Sergei Smirnov
Jun 4, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Hafiz Ashraful HaqueTakahiro Seki
Feb 19, 2014·Nature Communications·Kei FukuharaTakahiro Seki
Apr 1, 2003·Langmuir : the ACS Journal of Surfaces and Colloids·S BalamuruganGabriel P López

❮ Previous
Next ❯

Citations

Mar 25, 2017·Macromolecular Rapid Communications·Koichiro BeppuTakahiro Seki
Jul 25, 2017·Small·Koen NickmansAlbertus P H J Schenning
Jul 4, 2017·ACS Applied Materials & Interfaces·Tianjie WangHaifeng Yu
Jan 11, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Nobuhiro KawatsukiMizuho Kondo
Aug 12, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Shusaku Nagano

❮ Previous
Next ❯

Methods Mentioned

BETA
optical dichroism
atomic force microscopy
AFM
transmission electron microscopy

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.