Liquid crystal based sensors for the detection of cholic acid

2013 ◽  
Vol 5 (16) ◽  
pp. 4126 ◽  
Author(s):  
Sihui He ◽  
Wenlang Liang ◽  
Colleen Tanner ◽  
Kung-Lung Cheng ◽  
Jiyu Fang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholic Acid

Optical biosensor based on liquid crystal droplets for detection of cholic acid

2016 ◽  
Vol 381 ◽  
pp. 286-291 ◽  
Author(s):  
Xiaofang Niu ◽  
Dan Luo ◽  
Rui Chen ◽  
Fei Wang ◽  
Xiaowei Sun ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholic Acid ◽  
Optical Biosensor

Unconventional multi-arm azobenzene liquid crystal with different lengths of mesogenic arm based on cholic acid: synthesis, mesophase properties and photo-induced transition

2019 ◽  
Vol 47 (3) ◽  
pp. 352-368 ◽  
Author(s):  
Duo Wang ◽  
Yuan-Yuan Quan ◽  
Qing-Qing He ◽  
Ji-Wen Hu ◽  
Mei Tian ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholic Acid ◽  
Acid Synthesis

Design of β-CD–surfactant complex-coated liquid crystal droplets for the detection of cholic acid via competitive host–guest recognition

2015 ◽  
Vol 51 (43) ◽  
pp. 8912-8915 ◽  
Author(s):  
Jinan Deng ◽  
Xiaoyan Lu ◽  
Colin Constant ◽  
Aristide Dogariu ◽  
Jiyu Fang
Keyword(s):  
Liquid Crystal ◽  
Cholic Acid ◽  
Optical Probe ◽  
Selective Detection ◽  
Surfactant Complex ◽  
Configuration Transition

We report the use of β-CD–C14TAB complex-coated 5CB droplets for the selective detection of cholic acid, in which the β-CD–C14TAB complex at the surface of the 5CB droplets is used as a selective barricade and the configuration transition of the 5CB inside the droplets serves as an optical probe.

Non-conventional multi-arm ester liquid crystal derived from cholic acid: synthesis, thermal and optical behaviour

2019 ◽  
Vol 46 (15) ◽  
pp. 2167-2180 ◽  
Author(s):  
Duo Wang ◽  
Yue Min ◽  
Yuan-Yuan Quan ◽  
Jin-Ming Lv ◽  
Qing-Qing He ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholic Acid ◽  
Acid Synthesis ◽  
Optical Behaviour

Detection of bile acids using optical biosensors based on cholesteric liquid crystal droplets

2021 ◽  
Vol 9 (39) ◽  
pp. 13991-14002
Author(s):  
Buchaiah Gollapelli ◽  
Arun Kumar Tatipamula ◽  
Saikat Dewanjee ◽  
Ramadevi Suguru Pathinti ◽  
Jayalakshmi Vallamkondu
Keyword(s):  
Liquid Crystal ◽  
Bile Acids ◽  
Cholic Acid ◽  
Deoxycholic Acid ◽  
Cholesteric Liquid Crystal ◽  
Optical Biosensors ◽  
Highly Sensitive

We report a novel highly sensitive bile acids (cholic acid and deoxycholic acid) biosensor based on PVA/SC12S-stabilized cholesteric liquid crystal droplets.

Novel chiral multi-arm liquid crystal polymers containing azobenzene mesogens and cholic acid

2021 ◽  
pp. 1-14
Author(s):  
Chun-yang Li ◽  
Ya-ping Liu ◽  
Zi-yun Zhang ◽  
Jiang-tao Sun ◽  
Ying-gang Jia ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholic Acid ◽  
Liquid Crystal Polymers ◽  
Azobenzene Mesogens

Multi-arm azobenzene liquid crystal based on cholic acid: synthesis and mesophase properties

2018 ◽  
Vol 45 (12) ◽  
pp. 1813-1824 ◽  
Author(s):  
Duo Wang ◽  
Yu Huang ◽  
Jin-Ming Lv ◽  
Yue Min ◽  
Yuan-Yuan Quan ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholic Acid ◽  
Acid Synthesis

Freeze-fracture TEM of the helical smectic A* phase

1992 ◽  
Vol 50 (1) ◽  
pp. 278-279
Author(s):  
K.J. Ihn ◽  
R. Pindak ◽  
J. A. N. Zasadzinski
Keyword(s):  
Liquid Crystal ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Freeze Fracture ◽  
Smectic Phase ◽  
Layer Spacing ◽  
Screw Dislocations ◽  
Smectic A ◽  
Smectic Phases ◽  
Discrete Amount

A new liquid crystal (called the smectic-A* phase) that combines cholesteric twist and smectic layering was a surprise as smectic phases preclude twist distortions. However, the twist grain boundary (TGB) model of Renn and Lubensky predicted a defect-mediated smectic phase that incorporates cholesteric twist by a lattice of screw dislocations. The TGB model for the liquid crystal analog of the Abrikosov phase of superconductors consists of regularly spaced grain boundaries of screw dislocations, parallel to each other within the grain boundary, but rotated by a fixed angle with respect to adjacent grain boundaries. The dislocations divide the layers into blocks which rotate by a discrete amount, Δθ, given by the ratio of the layer spacing, d, to the distance between grain boundaries, lb; Δθ ≈ d/lb (Fig. 1).

Attractive mode force microscopy of chiral liquid crystal surfaces

1992 ◽  
Vol 50 (1) ◽  
pp. 268-269
Author(s):  
B.D. Terris ◽  
R. J. Twieg ◽  
C. Nguyen ◽  
G. Sigaud ◽  
H. T. Nguyen
Keyword(s):  
Liquid Crystal ◽  
Crystal Surfaces ◽  
Free Surfaces ◽  
Control Range ◽  
Force Microscopy ◽  
Liquid Crystal Films ◽  
Chiral Liquid Crystal ◽  
Crystal Films ◽  
Electrostatic Charging ◽  
And Shifts

We have used a force microscope in the attractive, or noncontact, mode to image a variety of surfaces. In this mode, the microscope tip is oscillated near its resonant frequency and shifts in this frequency due to changes in the surface-tip force gradient are detected. We have used this technique in a variety of applications to polymers, including electrostatic charging, phase separation of ionomer surfaces, and crazing of glassy films.Most recently, we have applied the force microscope to imaging the free surfaces of chiral liquid crystal films. The compounds used (Table 1) have been chosen for their polymorphic variety of fluid mesophases, all of which exist within the temperature control range of our force microscope.

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