Microshells: Photoresponsive Monodisperse Cholesteric Liquid Crystalline Microshells for Tunable Omnidirectional Lasing Enabled by a Visible Light-Driven Chiral Molecular Switch (Advanced Optical Materials 9/2014)

2014 ◽  
Vol 2 (9) ◽  
pp. 904-904 ◽  
Author(s):  
Lujian Chen ◽  
Yannian Li ◽  
Jing Fan ◽  
Hari Krishna Bisoyi ◽  
David A. Weitz ◽  
...  
Keyword(s):  
Visible Light ◽  
Optical Materials ◽  
Liquid Crystalline ◽  
Molecular Switch ◽  
Visible Light Driven ◽  
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.

Visible Light-Driven Artificial Molecular Switch Actuated by Radical–Radical and Donor–Acceptor Interactions

2015 ◽  
Vol 119 (24) ◽  
pp. 6317-6325 ◽  
Author(s):  
Junling Sun ◽  
Yilei Wu ◽  
Zhichang Liu ◽  
Dennis Cao ◽  
Yuping Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Molecular Switch ◽  
Visible Light Driven ◽  
Donor Acceptor

Cholesteric liquid crystal glass platinum acetylides

2014 ◽  
Vol 1698 ◽  
Author(s):  
Thomas M. Cooper ◽  
Aaron R. Burke ◽  
Douglas M. Krein ◽  
Ronald F. Ziolo ◽  
Eduardo Arias ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Optical Materials ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Cholesteric Liquid Crystal ◽  
Isotropic Phase ◽  
Crystal Glass ◽  
Cholesteric Phase ◽  
Long Time ◽  
Cholesteric Liquid Crystalline

ABSTRACTTo prepare cholesteric liquid crystalline nonlinear optical materials with ability to be vitrified on cooling and form long time stability cholesteric glasses at room temperature, a series of platinum acetylide complexes modified with cholesterol has been synthesized. The materials synthesized have the formula trans-Pt(PR3)(cholesterol (3 or 4)-ethynyl benzoate)(1-ethynyl-4-X-benzene), where R = Et, Bu or Oct and X = H, F, OCH3 and CN. A cholesteric liquid crystal phase was observed in the complexes R = Et, and X = F, OCH3 and CN but not in any of the other complexes. When X = CN, a cholesteric glass was observed at room temperature which remained stable up to 130 °C, then converted to a mixed crystalline/cholesteric phase and completely melted to an isotropic phase at 230 °C. When X = F or OCH3 the complexes were crystalline at room temperature with conversion to the cholesteric phase upon heating to 190 and 230 °C, respectively. In the series X = CN, OCH3 and F, the cholesteric pitch was determined to be 1.7, 3.4 and 9.0 µ, respectively.

1,2‐Dithienyldicyanoethene‐Based, Visible‐Light‐Driven, Chiral Fluorescent Molecular Switch: Rewritable Multimodal Photonic Devices

2019 ◽  
Vol 131 (45) ◽  
pp. 16198-16202 ◽  
Author(s):  
Juntao Li ◽  
Hari Krishna Bisoyi ◽  
Siyang Lin ◽  
Jinbao Guo ◽  
Quan Li
Keyword(s):  
Visible Light ◽  
Molecular Switch ◽  
Photonic Devices ◽  
Visible Light Driven
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