Lyotropic Chiral Nematic Liquid Crystalline Aliphatic Conjugated Polymers Based on Disubstituted Polyacetylene Derivatives That Exhibit High Dissymmetry Factors in Circularly Polarized Luminescence

2012 ◽  
Vol 134 (48) ◽  
pp. 19795-19807 ◽  
Author(s):  
Benedict A. San Jose ◽  
Satoshi Matsushita ◽  
Kazuo Akagi
Keyword(s):  
Conjugated Polymers ◽  
Liquid Crystalline ◽  
Circularly Polarized ◽  
Chiral Nematic ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Circularly polarized luminescence in chiral nematic liquid crystals: generation and amplification

2021 ◽  
Author(s):  
Xuefeng Yang ◽  
Xue Jin ◽  
Tonghan Zhao ◽  
Pengfei Duan
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Excellent Performance ◽  
Circularly Polarized ◽  
Chiral Nematic ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Chiral nematic liquid crystals exhibit excellent performance in obtaining high luminescence dissymmetry factor of circularly polarized luminescence.

scholarly journals Preferential Circularly Polarized Luminescence from a Nano-Segregated Liquid Crystalline Phase Using a Polymerized Twisted Nematic Platform

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2529
Author(s):  
Jae-Jin Lee ◽  
Suk-Won Choi
Keyword(s):  
Molecular Weight ◽  
Liquid Crystalline ◽  
Guest Molecule ◽  
Mixed System ◽  
Low Molecular Weight ◽  
Circularly Polarized ◽  
Molecular Systems ◽  
Circularly Polarized Luminescence ◽  
Twisted Nematic ◽  
Polarized Luminescence

In this study, a polymerized twisted nematic (TN) network was used as an extrinsic chiral platform to overcome the heterogeneity during spontaneous symmetry breaking in a mixed system comprising an achiral bent-core molecule and rod-like mesogen. The TN platform was prepared by photopolymerizing a reactive mesogen dispersed in a low molecular weight liquid crystal with TN orientation. The use of TN orientation to correct the degeneracy in bent-core molecular systems has been previously reported; however, to the best of our knowledge, this is the first study that uses an extrinsic chiral platform of a polymerized TN network. The heterogeneity in the nano-segregated phase of the achiral mixture was suppressed using the extrinsic TN platform with a twisted angle θ of ≥ |±30°|. When an achiral mixture doped with a luminescent guest molecule was refilled into the extrinsic chiral platform, preferential deracemization with one-handedness occurred, corresponding to the handedness of the TN platform. Therefore, circularly polarized luminescence with a preferential handedness can be achieved using this extrinsic chiral platform.

Ionic Liquid Crystalline Based on Amino Acid and Gemini Surfactant: Tunable Phase Structure, Circular Polarized Luminescence and Emission Color

2022 ◽  
Author(s):  
Mengjiao Yi ◽  
Ping Qi ◽  
Qi Fan ◽  
Jingcheng Hao
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystalline ◽  
Gemini Surfactant ◽  
Excitation Wavelength ◽  
Circularly Polarized ◽  
Display Devices ◽  
Emission Color ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Application Prospects

Circularly polarized luminescence (CPL)-active ionic liquid crystalline (ILC) featuring excitation wavelength-dependent (Ex-De) photoluminescence have latent application prospects in display devices. In addition, materials with tunable CPL responses are quite attractive...

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