Chiral lyotropic chromonic liquid crystals composed of disodium cromoglycate doped with water-soluble chiral additives

Shirai, T.; Shuai, Min; Nakamura, Keita; Yamaguchi, Akihiro; Naka, Yumiko; Sasaki, Takeo; Clark, Noel A.; Le, Khoa V.

doi:10.1039/c7sm02262j

Cited by 27 publications

(32 citation statements)

References 31 publications

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“…For chiral mixtures DSCG was dissolved in 10%w/w L‐alanine water solution following literature. [ 20–23 ] Oxazine perchlorate (less than 1‰ w/w) was added to DSCG solution. For KCl tests the L‐alanine was prepared in 0.1 and 0.01 m KCl solutions.…”

Section: Methodsmentioning

confidence: 99%

Induced Chiral Chromonics Confined in Micrometric Droplets

Pellegrino

Santo

Spina

et al. 2021

Adv Funct Materials

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Chirality emergence in biological systems is common but the chiral expression from the molecular to macroscopic level in water‐based systems is poorly understood. Among water‐based systems, chromonic liquid crystals have recently received a lot of attention due to the spontaneous chirality they show when confined in curved geometries. Confinement of chiral‐induced chromonics is not trivial since they are three component systems whose time stability is a delicate thermodynamic balance. In this work, a well‐defined periodic Frank–Pryce texture, typical of chiral thermotropic liquid crystals, is observed in microspheres of a chiral induced chromonic embedded in a poly(dimethylsiloxane) matrix. This texture slowly degrades in time and a possible mechanism behind the degradation process is suggested via X‐ray diffraction and atomic force microscopy measurements on thin chromonic films. To stabilize this texture and to control the structure periodicity, cations are added to the three components system in an attempt to tune the non‐covalent interactions between molecules and supramolecular stacks. The study of the effects of this addition allows for better insight into the molecular interactions that occur in the chiral induced mesophase. This is a crucial point in view of possible biocompatible technological applications.

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Section: Methodsmentioning

confidence: 99%

Induced Chiral Chromonics Confined in Micrometric Droplets

Pellegrino

Santo

Spina

et al. 2021

Adv Funct Materials

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show abstract

“…To visualize the morphology of the NLC using FF‐TEM, the samples were fractured before TEM observations. All measurements were implemented at room temperature unless otherwise stated [28].…”

Section: Resultsmentioning

confidence: 99%

Microfluidisation trends in the development of nanodelivery systems: characterisation and release study of resveratrol‐loaded nanostructured lipid carrier prepared with high‐pressure microfluidisation

Jian‐min

Sun

Liu

2020

Micro & Nano Letters

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“…Additives such as ions and water-soluble organic molecules can have an impact on the transition concentration of 5 0 DSCG from isotropic solutions to nematic liquid crystal phases. 13,17,23,[30][31][32] The isodesmic assembly formation is predicted to be a step towards the formation of the LC phase as these isodesmic assemblies align in solution. 13,14,27 However, the extensive studies and characterization of these isodesmic assemblies are lacking.…”

Section: Resultsmentioning

confidence: 99%