2 research outputs found
Comparison of the Photoinduced Orientation Structure in the Bulk and at the Near-Surface of a Photoalignable Liquid Crystalline Polymer Film
The
thermally stimulated photoinduced in-plane and out-of-plane
molecular reorientation behaviors of a polymethacrylate film comprised
of 4-methoxycinnnamoylbiphenyl (MCB) side groups connected with a
decylene spacer (PMCB10M) are compared in the bulk (>10 nm), at
the
inner-surface (âŒ10 nm), and at the near-surface (<2 nm)
using polarized UV absorption and near-edge X-ray absorption fine
structure (NEXAFS) spectroscopies. The biaxial reorientation characteristics
in the bulk of the PMCB10 M films can be controlled by irradiating
with linearly polarized (LP) UV light and subsequent annealing to
generate self-organization of the MCB side groups. However, the homogeneous
in-plane orientation at the near-surface, which can introduce homogeneous
nematic low-molecular-weight liquid crystal mixture alignment, is
observed regardless of the self-organization process. The differences
in the orientation characteristics arise from long alkylene spacer
and bulky mesogenic side groups
Development of Novel Decarboxylation-Urea Method toward Interlayer-Anion-Controlled Layered Double Hydroxides
Layered double hydroxides
(LDHs) are representative of a 2D anionic
clay. Simple and homogeneous synthesis of interlayer-anion-controlled
LDH is essential for studies and industrial production. In this study,
we report the one-pot synthesis of an LDH that is selective for interlayer
anions, which was labeled as âdecarboxylation-urea methodâ.
We obtained LDHs intercalated with NO3â, Clâ, and SO42â by
removing CO2 in this method. The ionic conductivities of
the prepared LDHs were investigated for their applicability to electrolytes,
and it was found that ZnâAl LDH intercalated with NO3â showed the highest ionic conductivity (18 mS
cmâ1). Therefore, the LDH intercalated with NO3â synthesized using the decarboxylation-urea
method is promising as an alkaline solid electrolyte