An Azoester-containing Photoresponsive Linear Liquid Crystal Polymer with Good Mesophase Stability

Han, Shu-Qiang; Chen, Yingying; Xu, Bo; Jia, Wei; Yu, Yanlei

doi:10.1007/s10118-020-2383-0

Cited by 21 publications

(15 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[26,27] The light-driven CLCs facilitate localized color tuning because light, compared to other stimuli, has spatial superiority of remote and local control. [28] The pitch length that determines the reflection wavelength according to Bragg's law can be manipulated by light stimuli due to the photoresponsive chiral switches doped in the CLCs. [29,30] The chiral switches twist the liquid crystal (LC) molecules into helical superstructures [31,32] and undergo configurational changes upon photoisomerization, leading to variation in the helical twisting power (HTP, β), the pitch length, and consequently the structural colors (tuning).…”

Section: Programmable Coloration and Patterning On Reconfigurable Chi...mentioning

confidence: 99%

Programmable Coloration and Patterning on Reconfigurable Chiral Photonic Paper

Cui

Qin

Liu

et al. 2022

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

Section: Programmable Coloration and Patterning On Reconfigurable Chi...mentioning

confidence: 99%

Programmable Coloration and Patterning on Reconfigurable Chiral Photonic Paper

Cui

Qin

Liu

et al. 2022

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

“…[ 40,46,83 ] More importantly, light enables the remote and precise control, which is difficult to be realized by other stimuli. [ 84,85 ] Fabricating photoresponsive LCPs into soft robots and sensors is likely to be used in “smart” MR devices with remote control, which is favored for multi‐user applications. A straightforward method to obtain photoresponsive LCPs is the incorporation of photothermal dyes (i.e., azobenzene derivatives, [ 86,87 ] organic or organometallic dyes [ 71,88 ] ) or agents (such as gold nanoparticles, [ 54,89 ] carbon nanotubes [ 90,91 ] and polydopamine coatings [ 92,93 ] ) into thermoresponsive LCPs.…”

Section: Programmable Control Of Lcp Deformations For Mr Applicationsmentioning

confidence: 99%

Liquid Crystal Soft Actuators and Robots toward Mixed Reality

Zhu

Jiang

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

Liquid crystals (LCs) are soft but smart materials that can adjust its chemical or physical properties in response to various external stimuli. Using these materials to construct soft actuators and robots, referred as LC actuators and robots, is expected to replace current machinery part, obtaining lighter and smaller equipment with adjustable and complex functions. Especially, combining these LC actuator and robots with existing virtual reality and augmented reality technologies will produce a new world of mixed reality (MR) with the visual, auditory, and somatosensory interaction. In this review, the recent work on responsive LC actuators and robots is introduced, emphasizing on their potentials in haptic use. By discussing their programmable control via suitable stimuli, the LC actuators and robots are summarized for mechanical outputs, environmental mimic, and fine‐tuning of surface texture and roughness. It is anticipated that the continuous development on LC actuators and robots will accelerate the MR technology toward practical application.

show abstract

“…Owing to their photoactivity under UV irradiation, azo and esters are also ideal linking groups for designing new mesomorphic structures [ 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. Intermolecular separation is generally increased by lateral substitution, which extends the core moiety and decreases lateral molecular contacts [ 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

New Self-Organizing Optical Materials and Induced Polymorphic Phases of Their Mixtures Targeted for Energy Investigations

et al. 2022

View full text Add to dashboard Cite

Herein, a new homologues series of fluorinated liquid crystal compounds, In, 4-(((4-fluorophenyl)imino)methyl)-2-methoxyphenyl 4-alkoxybenzoate were synthesized and its mesomorphic properties were investigated both experimentally and theoretically. The synthesized compounds were characterized by elemental analyzer, NMR, and FT-IR spectroscopy to deduce the molecular structures. The differential scanning calorimetry was employed to examine mesophase transitions whereas the polarized optical microscopy was used to identify the mesophases. The obtained results revealed that the purely nematic phase observed in all terminal side chains. All homologues showed to possess monotropic nematic mesophases except the derivative I8 exhibits enantiotropic property. The optimized geometrical structures of the present designed groups have been derived theoretically. The experimental data was explained using density functional theory computations. The estimated values of dipole moment, polarizability, thermal energy, and molecule electrostatic potential demonstrated that the mesophase stability and type could be illustrated. Binary phase diagram was constructed and addressed in terms of the mesomorphic temperature range and obtained polymorphic phases. It was found that incorporation of the terminal F-atom and lateral CH3O group influence both conformation and steric effect in pure and mixed states. The absorption and fluorescence emission spectra of fabricated films were recorded to elucidate the impact of terminal side chain on photophysical properties of synthesized liquid crystal. It was noted that the increase of terminal side chain length lead to reduction of optical band gap, whereas charge carrier lifetime increases.

show abstract

An Azoester-containing Photoresponsive Linear Liquid Crystal Polymer with Good Mesophase Stability

Cited by 21 publications

References 34 publications

Programmable Coloration and Patterning on Reconfigurable Chiral Photonic Paper

Programmable Coloration and Patterning on Reconfigurable Chiral Photonic Paper

Liquid Crystal Soft Actuators and Robots toward Mixed Reality

New Self-Organizing Optical Materials and Induced Polymorphic Phases of Their Mixtures Targeted for Energy Investigations

Contact Info

Product

Resources

About