Circular dichroism study of crosslinked cholesteric liquid crystalline hydroxypropyl cellulose solid films

1990 ◽  
Vol 9 (7) ◽  
pp. 768-769 ◽  
Author(s):  
S. Suto ◽  
H. Tashiro ◽  
M. Karasawa
Keyword(s):  
Circular Dichroism ◽  
Liquid Crystalline ◽  
Hydroxypropyl Cellulose ◽  
Solid Films ◽  
Circular Dichroïsm ◽  
Cholesteric Liquid Crystalline

Study of Casting Self-Colored Liquid Crystalline Solid Films of Hydroxypropyl Cellulose

2013 ◽  
Vol 341-342 ◽  
pp. 217-220
Author(s):  
Qin Xing Zhang ◽  
Li Qian ◽  
Li Xia Wang ◽  
S. Stuto ◽  
Chang Yu Shen
Keyword(s):  
Visible Light ◽  
Liquid Crystalline ◽  
Solution Concentration ◽  
Hydroxypropyl Cellulose ◽  
Crystalline Solid ◽  
Selective Reflection ◽  
Solid Films ◽  
Colored Coating ◽  
Cooling Velocity ◽  
Cholesteric Liquid Crystalline

Solutions of lyotropic cholesteric liquid crystalline hydroxypropyl cellulose (HPC) in water would be self-colored due to the selective reflection of visible light, depending on the solution concentration. Colored coating of the liquid crystalline aqueous HPC solutions was attempted to apply. HPC solid films were found which could cast from the liquid crystalline solutions at different conditions such as solution concentration and different drying temperature. Experiments show that both solution concentration and cooling velocity play an important effect in controlling the color of HPC films.

Dual mechanochromism of cellulosic cholesteric liquid-crystalline films: wide-ranging colour control and circular dichroism inversion by mechanical stimulus

2018 ◽  
Vol 6 (6) ◽  
pp. 1370-1376 ◽  
Author(s):  
K. Miyagi ◽  
Y. Teramoto
Keyword(s):  
Circular Dichroism ◽  
Liquid Crystalline ◽  
Colour Change ◽  
Mechanical Stimulus ◽  
Crystalline Films ◽  
Circular Dichroïsm ◽  
Cholesteric Liquid Crystalline

We found that cellulosic liquid-crystalline films displayed not only a wide-ranging colour change but also inversion of circular dichroism upon a mechanical stimulus.

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