Thermotropic liquid crystal films for biosensors and beyond

Popov, Piotr; Mann, Elizabeth K.; Jákli, Antal

doi:10.1039/c7tb00809k

Cited by 153 publications

(109 citation statements)

References 148 publications

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“…Thed ynamic behavior of nematic liquid crystals at an interface can be used in sensors. [164,185] Sensing systems using amphiphilic surfactants and nematic liquid crystals have been developed by Abbott and co-workers. [164,[186][187][188][189][190][191] These sensors are classified as thin-film type (Figure 9) [186][187][188][189] or droplet type.…”

Section: Angewandte Chemiementioning

confidence: 99%

Functional Liquid Crystals towards the Next Generation of Materials

et al. 2018

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Since the discovery of the liquid-crystalline state in 1888, liquid crystal science has made great advances through fusion with various technologies and disciplines. Recently, new molecular design strategies and new self-assembled structures have been developed as a result of the progress made in synthetic procedures and characterization techniques. Since these liquid crystals exhibit new functions and properties derived from their nanostructures and alignment, a variety of new functions for liquid crystals, such as transport for energy applications, separation for environmental applications, chromism, sensing, electrooptical effects, actuation, and templating have been proposed. This Review presents recent advances of liquid crystals that should contribute to the next generation of materials.

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Section: Angewandte Chemiementioning

confidence: 99%

Functional Liquid Crystals towards the Next Generation of Materials

et al. 2018

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“…[ 15–21 ] Regarding biosensors, the concept involves either the imaging of targeted species displayed at solid surfaces, or sensing at LC/aqueous interfaces (LC thin films or droplets). So far, LC‐based biosensors have been reported to detect a wide range of biomolecules such as glucose, [ 22 ] cholesterol, [ 23 ] lipids, [ 24 ] antimicrobial peptides, [ 25 ] proteins, [ 26,27 ] antigens, [ 28 ] pathogen DNA, [ 29 ] viruses, [ 30 ] bacteria, [ 31 ] or mammalian cells. [ 32,33 ] Nonetheless, the exploitation of LCs in biosensing devices has already been reviewed by other authors [ 16,19 ] and is outside the scope of this work.…”

Section: Introductionmentioning

confidence: 99%

Seeing the Unseen: The Role of Liquid Crystals in Gas‐Sensing Technologies

Esteves

Ramou

Porteira

et al. 2020

Advanced Optical Materials

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Fast, real‐time detection of gases and volatile organic compounds (VOCs) is an emerging research field relevant to most aspects of modern society, from households to health facilities, industrial units, and military environments. Sensor features such as high sensitivity, selectivity, fast response, and low energy consumption are essential. Liquid crystal (LC)‐based sensors fulfill these requirements due to their chemical diversity, inherent self‐assembly potential, and reversible molecular order, resulting in tunable stimuli‐responsive soft materials. Sensing platforms utilizing thermotropic uniaxial systems—nematic and smectic—that exploit not only interfacial phenomena, but also changes in the LC bulk, are demonstrated. Special focus is given to the different interaction mechanisms and tuned selectivity toward gas and VOC analytes. Furthermore, the different experimental methods used to transduce the presence of chemical analytes into macroscopic signals are discussed and detailed examples are provided. Future perspectives and trends in the field, in particular the opportunities for LC‐based advanced materials in artificial olfaction, are also discussed.

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“…Das dynamische Verhalten nematischer Flüssigkristalle an einer Grenzfläche kann in Sensoren genutzt werden . Ein Sensorsystem unter Verwendung von amphiphilen Tensiden und nematische Flüssigkristalle bildenden Molekülen wurde von Abbott und Mitarbeitern entwickelt .…”

Section: Neuartige Funktionalisierung Von Nematischen Flüssigkristallenunclassified

Von funktionellen Flüssigkristallen zur nächsten Generation von Materialien

et al. 2018

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Seit der Entdeckung des flüssigkristallinen Zustandes im Jahr 1888 wurden Flüssigkristalle unter Einsatz verschiedener Technologien in unterschiedlichen Disziplinen eingehend erforscht. In letzter Zeit wurden dank der Fortschritte bei Synthese‐ und Charakterisierungsmethoden ein neuartiges Moleküldesign und neue selbstorganisierte Strukturen entwickelt. Für diese Flüssigkristalle, deren neuartige Funktionen und Eigenschaften sich von ihren Nanostrukturen und ihrer Ausrichtung ableiten, wurde eine Vielzahl möglicher Anwendungen vorgeschlagen, etwa im Energietransport, in Trennverfahren für die Umwelttechnik, als Sensoren, Aktuatoren oder Template sowie auf der Grundlage von Farbänderungen oder elektrooptischen Effekten. Dieser Aufsatz präsentiert die neuesten Fortschritte bei Flüssigkristallen, die zu einer neuen Generation von Materialien führen könnten.

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Thermotropic liquid crystal films for biosensors and beyond

Abstract: Recent results on structural properties and possible bio-sensing applications of planar liquid crystal films are reviewed.

Cited by 153 publications

References 148 publications

Functional Liquid Crystals towards the Next Generation of Materials

Functional Liquid Crystals towards the Next Generation of Materials

Seeing the Unseen: The Role of Liquid Crystals in Gas‐Sensing Technologies

Von funktionellen Flüssigkristallen zur nächsten Generation von Materialien

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