A Room-Temperature Liquid-Crystalline Phase with Crystalline π Stacks

2007 ◽  
Vol 119 (21) ◽  
pp. 3970-3973 ◽  
Author(s):  
Yijin Xu ◽  
Siwei Leng ◽  
Chenming Xue ◽  
Runkun Sun ◽  
Jie Pan ◽  
...  
Keyword(s):  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Liquid Crystalline Phase ◽  
Temperature Liquid

A Room-Temperature Liquid-Crystalline Phase with Crystalline π Stacks

2007 ◽  
Vol 46 (21) ◽  
pp. 3896-3899 ◽  
Author(s):  
Yijin Xu ◽  
Siwei Leng ◽  
Chenming Xue ◽  
Runkun Sun ◽  
Jie Pan ◽  
...  
Keyword(s):  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Liquid Crystalline Phase ◽  
Temperature Liquid

Tuning liquid crystalline phase behaviour in columnar crown ethers by sulfur substituents

2017 ◽  
Vol 4 (5) ◽  
pp. 790-803 ◽  
Author(s):  
Jochen Kirres ◽  
Katharina Schmitt ◽  
Iris Wurzbach ◽  
Frank Giesselmann ◽  
Sabine Ludwigs ◽  
...  
Keyword(s):  
Crown Ethers ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Phase Behaviour ◽  
Liquid Crystalline Phase ◽  
Side Chains ◽  
Columnar Mesophases ◽  
Sulfur Containing

Sulfur-containing side chains in the periphery ofo-terphenyl or triphenylene units of crown ethers induce room-temperature columnar mesophases.

scholarly journals A 1,6-Diphenylpyrene-Based, Photoluminescent Cyclophane Showing a Nematic Liquid-Crystalline Phase at Room Temperature

Crystals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 92 ◽  
Author(s):  
Yoshimitsu Sagara ◽  
Tatsuya Muramatsu ◽  
Nobuyuki Tamaoki
Keyword(s):  
Liquid Crystals ◽  
Crystalline Phase ◽  
Nematic Phase ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Liquid Crystalline Phase ◽  
Condensed State ◽  
Liquid Crystalline Phases ◽  
Potential Applications ◽  
Blue Photoluminescence

Photoluminescent nematic liquid crystals have been an attractive research target for decades, because of their potential applications in optoelectrical devices. Integration of luminescent motifs into cyclic structures is a promising approach to induce low-ordered liquid-crystalline phases, even though relatively large and rigid luminophores are used as emitters. Here, we demonstrate a 1,6-diphenylpyrene-based, unsymmetric cyclophane showing a stable nematic phase at room temperature and exhibiting strong photoluminescence from the condensed state. The observed sky-blue photoluminescence was dominated by the emission species ascribed to assembled luminophores rather than monomers.

scholarly journals Electron transfer studies of a conventional redox probe in human sweat and saliva bio-mimicking conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
P. Krishnaveni ◽  
V. Ganesh
Keyword(s):  
Electron Transfer ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Redox Couple ◽  
Liquid Crystalline Phase ◽  
Transfer Reactions ◽  
Redox Probe ◽  
Human Sweat

AbstractModern day hospital treatments aim at developing electrochemical biosensors for early diagnosis of diseases using unconventional human bio-fluids like sweat and saliva by monitoring the electron transfer reactions of target analytes. Such kinds of health care diagnostics primarily avoid the usage of human blood and urine samples. In this context, here we have investigated the electron transfer reaction of a well-known and commonly used redox probe namely, potassium ferro/ferri cyanide by employing artificially simulated bio-mimics of human sweat and saliva as unconventional electrolytes. Typically, electron transfer characteristics of the redox couple, [Fe(CN)6]3−/4− are investigated using electrochemical techniques like cyclic voltammetry and electrochemical impedance spectroscopy. Many different kinetic parameters are determined and compared with the conventional system. In addition, such electron transfer reactions have also been studied using a lyotropic liquid crystalline phase comprising of Triton X-100 and water in which the aqueous phase is replaced with either human sweat or saliva bio-mimics. From these studies, we find out the electron transfer reaction of [Fe(CN)6]3−/4− redox couple is completely diffusion controlled on both Au and Pt disc shaped electrodes in presence of sweat and saliva bio-mimic solutions. Moreover, the reaction is partially blocked by the presence of lyotropic liquid crystalline phase consisting of sweat and saliva bio-mimics indicating the predominant charge transfer controlled process for the redox probe. However, the rate constant values associated with the electron transfer reaction are drastically reduced in presence of liquid crystalline phase. These studies are essentially carried out to assess the effect of sweat and saliva on the electrochemistry of Fe2+/3+ redox couple.

Liquid crystalline phase transitions in hexakis(4-(4′-heptyloxy)biphenoxy)cyclotriphosphazene

1995 ◽  
Vol 18 (5) ◽  
pp. 795-800 ◽  
Author(s):  
K. Moriya ◽  
H. Mizusaki ◽  
M. Kato ◽  
S. Yano ◽  
M. Kajiwara
Keyword(s):  
Phase Transitions ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Liquid Crystalline Phase

scholarly journals Influence of applied electric fields on the positive magneto-LC effects observed in the ferroelectric liquid crystalline phase of a chiral nitroxide radical compound

Soft Matter ◽  
2013 ◽  
Vol 9 (18) ◽  
pp. 4687 ◽  
Author(s):  
Katsuaki Suzuki ◽  
Yoshiaki Uchida ◽  
Rui Tamura ◽  
Yohei Noda ◽  
Naohiko Ikuma ◽  
...  
Keyword(s):  
Electric Fields ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Nitroxide Radical ◽  
Liquid Crystalline Phase
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