In situ polymerization of liquid-crystalline thin films of electron-transporting perylene tetracarboxylic bisimide bearing cyclotetrasiloxane rings

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5474-5484 ◽  
Author(s):  
Kaede Takenami ◽  
Shinobu Uemura ◽  
Masahiro Funahashi
Keyword(s):  
Thin Films ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
In Situ Polymerization ◽  
Columnar Phase

A perylene tetracarboxylic bisimide (PTCBI) derivative bearing four cyclotetrasiloxane rings that forms a columnar phase at room temperature despite the presence of the bulky cyclotetrasiloxane rings and itsin situpolymerization were reported.

scholarly journals Exploration of immobilization conditions of cellulosic lyotropic liquid crystals in monomeric solvents by in situ polymerization and achievement of dual mechanochromism at room temperature

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 24724-24730 ◽  
Author(s):  
K. Miyagi ◽  
Y. Teramoto
Keyword(s):  
Liquid Crystals ◽  
Polymer Composites ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
In Situ Polymerization ◽  
Synthetic Polymer ◽  
Lyotropic Liquid Crystals ◽  
Liquid Crystalline Structure ◽  
Cholesteric Liquid Crystalline

We obtained cellulosic/synthetic polymer composites incorporating a cholesteric liquid crystalline structure by in situ polymerization and accomplished dual mechanochromism at room temperature.

In-Situ Polymerization of PEDOT in Perovskite Thin Films for Efficient and Stable Photovoltaics

2021 ◽  
pp. 133109
Author(s):  
Wei-Min Gu ◽  
Ke-Jian Jiang ◽  
Yue Zhang ◽  
Guang-Hui Yu ◽  
Cai-Yan Gao ◽  
...  
Keyword(s):  
Thin Films ◽  
In Situ Polymerization

Friction and Rheological Properties of Meso-Porous MCM-41/Unsaturated Polyester In Situ Composites

2014 ◽  
Vol 599-601 ◽  
pp. 18-21
Author(s):  
Shu Long Hu ◽  
Jian Lv ◽  
Feng Ying Lu ◽  
Hua Shan Liu ◽  
De Ming Zeng
Keyword(s):  
Wear Resistance ◽  
Rheological Properties ◽  
Cetyltrimethylammonium Bromide ◽  
Room Temperature ◽  
Polyester Resin ◽  
In Situ Polymerization ◽  
Unsaturated Polyester ◽  
Roller Milling ◽  
Mcm 41

In this paper, meso-porous MCM-41 was synthesized at room temperature using cationic surfactant cetyltrimethylammonium bromide (CTAB) as the template agent. Then MCM-41/unsatura-ted polyester resin (UPR) materials were prepared by in-situ polymerization with the meso-porous MCM-41. MCM-41/UPR in-situ composites were prepared by roller milling and molding processes. Effects of meso-porous MCM-41 on rheological properties and wear resistance of the MCM-41/UPR composites have been investigated. It is shown that MCM-41 has a diameter in range of 4-5 nm and the pores are highly ordered. MCM-41 can improve the rheological properties and wear resistance of the composites. When MCM-41 content is 2%, the mass abrasion loss is decreased by 37.4%.

scholarly journals In situ deformation of nanocrystalline Al2O3 thin films at room temperature

2016 ◽  
pp. 195-196
Author(s):  
Erkka Frankberg ◽  
Lucile Joly-Pottuz ◽  
Francisco Garcia ◽  
Turkka Salminen ◽  
Thierry Douillard ◽  
...  
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
In Situ Deformation

Controllable Synthesis of Functional Polyaniline Nanotubes via a Complex Template

2015 ◽  
Vol 1120-1121 ◽  
pp. 220-224
Author(s):  
Ying Wang ◽  
Dong Hao Sun ◽  
Yan Feng Guo
Keyword(s):  
Electric Conductivity ◽  
Room Temperature ◽  
In Situ Polymerization ◽  
High Yield ◽  
Controllable Synthesis ◽  
Order Of Magnitude ◽  
Uv Visible ◽  
Acid Orange Ii ◽  
High Electric Conductivity

Functional Polyaniline (PANI) nanotubes are easily synthesized in high yield by an in situ polymerization using a fibrillar complex of acid orange II (AO II) and FeCl3as a template. During the process, the complex templates help direct the growth of fibrillar PANI on their surfaces, resulting in the formation of composite micro/nanofibers of PANI. After polymerization, by the post-treatment of removing templates in 1.0 M hydrochloric acid solution, PANI nanotubes with azo function and high electric conductivity of PANI are readily fabricated. The PANI nanotubes have about 150nm-300nm in diameter and several microns in length. At room temperature, the electric conductivity of PANI nanotubes is up to 10-1S/cm order of magnitude. The characterizations, including FTIR, UV-visible, XRD and TG, are presented.

scholarly journals In situ tuning of magnetization via topotactic lithium insertion in ordered mesoporous lithium ferrite thin films

2016 ◽  
Vol 4 (38) ◽  
pp. 8889-8896 ◽  
Author(s):  
Christian Reitz ◽  
Christian Suchomski ◽  
Di Wang ◽  
Horst Hahn ◽  
Torsten Brezesinski
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Lithium Ferrite ◽  
Lithium Insertion ◽  
Ordered Mesoporous ◽  
Ferrite Thin Films

Topotactic Li insertion into polymer-templated mesostructured α-LiFe5O8 thin films allows for the intriguing possibility of tuning the magnetization at room temperature.

Phase Transformations in Sol-Gel PZT Thin Films

2000 ◽  
Vol 623 ◽  
Author(s):  
D.P. Eakin ◽  
M.G. Norton ◽  
D.F. Bahr
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Room Temperature ◽  
Structural Changes ◽  
Sol Gel ◽  
Ex Situ ◽  
Ambient Conditions ◽  
Crystalline Films ◽  
In Situ Heating

AbstractThin films of PZT were deposited onto platinized and bare single crystal NaCl using spin coating and sol-gel precursors. These films were then analyzed using in situ heating in a transmission electron microscope. The results of in situ heating are compared with those of an ex situ heat treatment in a standard furnace, mimicking the heat treatment given to entire wafers of these materials for use in MEMS and ferroelectric applications. Films are shown to transform from amorphous to nanocrystalline over the course of days when held at room temperature. While chemical variations are found between films crystallized in ambient conditions and films crystallized in the vacuum conditions of the microscope, the resulting crystal structures appear to be insensitive to these differences. Significant changes in crystal structure are found at 500°C, primarily the change from largely amorphous to the beginnings of clearly crystalline films. Crystallization does occur over the course of weeks at room temperature in these films. Structural changes are more modest in these films when heated in the TEM then those observed on actual wafers. The presence of Pt significantly influences both the resulting structure and morphology in both in situ and ex situ heated films. Without Pt present, the films appear to form small, 10 nm grains consisting of both cubic and tetragonal phases, whereas in the case of the Pt larger, 100 nm grains of a tetragonal phase are formed.

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