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^*

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Anorganische Chemie (6330)

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

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.

Originalsprache	englisch
Seiten (von - bis)	1575-1581
Seitenumfang	7
Fachzeitschrift	Liquid Crystals
Jahrgang	44
Ausgabenummer	10
DOIs	https://doi.org/10.1080/02678292.2017.1306887
Publikationsstatus	Veröffentlicht - 9 Aug. 2017

ASJC Scopus subject areas

Allgemeine Chemie
Allgemeine Materialwissenschaften
Physik der kondensierten Materie

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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.",

keywords = "calorimetry, Gold nanoparticles, liquid crystals, plasmon resonance, SAXS, twist-grain boundary phase",

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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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U2 - 10.1080/02678292.2017.1306887

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M3 - Article

AN - SCOPUS:85015815272

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VL - 44

SP - 1575

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JO - Liquid Crystals

JF - Liquid Crystals

IS - 10

ER -

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

Abstract

ASJC Scopus subject areas

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