Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host

Maja Trček; George Cordoyiannis; Brigita Rožič; Vassilios Tzitzios; George Nounesis; Samo Kralj; Ioannis Lelidis; Emmanuelle Lacaze; Heinz Amenitsch; Zdravko Kutnjak

doi:10.1080/02678292.2017.1306887

Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host

Maja Trček, George Cordoyiannis, Brigita Rožič, Vassilios Tzitzios, George Nounesis, Samo Kralj, Ioannis Lelidis, Emmanuelle Lacaze, Heinz Amenitsch, Zdravko Kutnjak^*

^*Corresponding author for this work

Institute of Inorganic Chemistry (6330)

Research output: Contribution to journal › Article › peer-review

Abstract

We report on the stabilisation of the liquid-crystalline, twist-grain boundary A (TGB_A) phase in mixtures of a chiral liquid crystal and surface-functionalised spherical Au nanoparticles (NPs) of 10 nm diameter. The results, obtained by calorimetric, optical, small-angle X-ray and plasmon resonance measurements, demonstrate that a TGB_A phase, which is metastable for the pure liquid crystal host, can be effectively stabilised for a 3 K range in the presence of NPs. Moreover, the role of NPs size on the TGB_A stabilisation is briefly discussed.

Original language	English
Pages (from-to)	1575-1581
Number of pages	7
Journal	Liquid Crystals
Volume	44
Issue number	10
DOIs	https://doi.org/10.1080/02678292.2017.1306887
Publication status	Published - 9 Aug 2017

Keywords

calorimetry
Gold nanoparticles
liquid crystals
plasmon resonance
SAXS
twist-grain boundary phase

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1080/02678292.2017.1306887

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title = "Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host",

abstract = "We report on the stabilisation of the liquid-crystalline, twist-grain boundary A (TGBA) phase in mixtures of a chiral liquid crystal and surface-functionalised spherical Au nanoparticles (NPs) of 10 nm diameter. The results, obtained by calorimetric, optical, small-angle X-ray and plasmon resonance measurements, demonstrate that a TGBA phase, which is metastable for the pure liquid crystal host, can be effectively stabilised for a 3 K range in the presence of NPs. Moreover, the role of NPs size on the TGBA stabilisation is briefly discussed.",

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T1 - Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host

AU - Trček, Maja

AU - Cordoyiannis, George

AU - Rožič, Brigita

AU - Tzitzios, Vassilios

AU - Nounesis, George

AU - Kralj, Samo

AU - Lelidis, Ioannis

AU - Lacaze, Emmanuelle

AU - Amenitsch, Heinz

AU - Kutnjak, Zdravko

PY - 2017/8/9

Y1 - 2017/8/9

N2 - We report on the stabilisation of the liquid-crystalline, twist-grain boundary A (TGBA) phase in mixtures of a chiral liquid crystal and surface-functionalised spherical Au nanoparticles (NPs) of 10 nm diameter. The results, obtained by calorimetric, optical, small-angle X-ray and plasmon resonance measurements, demonstrate that a TGBA phase, which is metastable for the pure liquid crystal host, can be effectively stabilised for a 3 K range in the presence of NPs. Moreover, the role of NPs size on the TGBA stabilisation is briefly discussed.

AB - We report on the stabilisation of the liquid-crystalline, twist-grain boundary A (TGBA) phase in mixtures of a chiral liquid crystal and surface-functionalised spherical Au nanoparticles (NPs) of 10 nm diameter. The results, obtained by calorimetric, optical, small-angle X-ray and plasmon resonance measurements, demonstrate that a TGBA phase, which is metastable for the pure liquid crystal host, can be effectively stabilised for a 3 K range in the presence of NPs. Moreover, the role of NPs size on the TGBA stabilisation is briefly discussed.

KW - calorimetry

KW - Gold nanoparticles

KW - liquid crystals

KW - plasmon resonance

KW - SAXS

KW - twist-grain boundary phase

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Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host

Abstract

Keywords

ASJC Scopus subject areas

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