A wide array of photoinduced motions in molecular and macromolecular assemblies at interfaces

T Seki - Bulletin of the Chemical Society of Japan, 2018 - academic.oup.com
Molecular and macromolecular assemblies have good “chemistry” with light. In the research
of photochromic molecules and systems, the number of papers in the most recent 10 years …

Light-directed alignment, surface morphing and related processes: recent trends

T Seki - Journal of Materials Chemistry C, 2016 - pubs.rsc.org
The immense potential of light responsive polymer materials toward technological
applications in photonics, mechanics and micro-fabrication has been attracting increasing …

All-organic polymer dielectrics prepared via optimization of sequential structure of polystyrene-based copolymers

G He, Y Liu, C Wang, S Chen, H Luo… - Chemical Engineering …, 2022 - Elsevier
It is a great challenge to improve simultaneously the permittivity (ε r) and breakdown strength
of polymer dielectrics. The linear polystyrene (PS) has the advantages of low cost, easy …

Induction of Highly Ordered Smectic Phases in Side Chain Liquid Crystalline Polymers by Means of Random Copolymerization

R Imanishi, Y Nagashima, K Takishima, M Hara… - …, 2020 - ACS Publications
The glass transition and melting temperatures of binary random copolymers are mostly
observed as nearly the average of each homopolymer with moderate deviations. However …

Surface-mediated dynamic cooperative motions in azobenzene polymer films

T Seki - Bulletin of the Chemical Society of Japan, 2024 - academic.oup.com
Abstract Azobenzene (1, 2-diphenyldiazene in IUPAC name) is a widely studied, simple,
rodlike photochromic molecule. The trans-(E) to cis-(Z) photoisomerization of this molecule …

Random planar orientation in liquid-crystalline block copolymers with azobenzene side chains by surface segregation

S Nagano - Langmuir, 2018 - ACS Publications
Rodlike liquid-crystalline (LC) mesogens preferentially adopt a homeotropic orientation by
excluded volume effects at the free surface in side-chain LC (SCLC) polymer films. The …

Periodically spaced side-chain liquid crystalline polymers

GO Orodepo, EB Gowd, S Ramakrishnan - Macromolecules, 2020 - ACS Publications
The melt-transesterification polymerization of diethyl malonate derivatives bearing a
pendant mesogen, with α, ω-alkanediols of varying lengths generated a series of side-chain …

Free surface command layer for photoswitchable out-of-plane alignment control in liquid crystalline polymer films

T Nakai, D Tanaka, M Hara, S Nagano, T Seki - Langmuir, 2016 - ACS Publications
To date, reversible alignment controls of liquid crystalline materials have widely been
achieved by photoreactive layers on solid substrates. In contrast, this work demonstrates the …

Photoinitiated Marangoni flow morphing in a liquid crystalline polymer film directed by super-inkjet printing patterns

I Kitamura, K Oishi, M Hara, S Nagano, T Seki - Scientific Reports, 2019 - nature.com
Slight contaminations existing in a material lead to substantial defects in applied paint.
Herein, we propose a strategy to convert this nuisance to a technologically useful process by …

Chiral photonic liquid crystalline polyethers with widely tunable helical superstructures

MA Farooq, W Wei, H Xiong - Langmuir, 2020 - ACS Publications
Liquid crystalline polymers with tunable structures on the scale of visible wavelength are
important in optical technology due to their enhanced mechanical stability, processability …