Langmuir–Blodgett films of stearic acid deposited on substrates at different orientations relative to compression direction: alignment layer for nematic liquid crystal

Choudhary, Keerti; Kumar, J.; Taneja, Parul; Gupta, R. K.; Manjuladevi, V.

doi:10.1080/02678292.2017.1306890

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…Although in-plane isotropy is expected at the air-water interface due to the isotropy of both bulk phases, the unidirectional compression of the monolayer could potentially introduce anisotropy in the surface. This possibility has been raised previously and has been demonstrated when casting monolayers onto solid supports ( 79 ). However, SFG spectra of the C-H stretching region in the SPP and PSP polarization combinations showed no intensity, indicating minimal if any anisotropy ( 80 ).…”

Section: Resultsmentioning

confidence: 92%

In situ investigation of the oxidation of a phospholipid monolayer by reactive oxygen species

Fellows¹,

Casford²,

Davies³

2023

Biophysical Journal

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Section: Resultsmentioning

confidence: 92%

In situ investigation of the oxidation of a phospholipid monolayer by reactive oxygen species

Fellows¹,

Casford²,

Davies³

2023

Biophysical Journal

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“…The phase of the LM of ODACNTs in the A range of 4-3 cm 2 . µg −1 can be considered liquid-like based on the maximum value of E (30 mN/m) [36], [37] and fluidic texture in the BAM images.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Langmuir-Blodgett Layer of Functionalized Single-Walled Carbon Nanotubes for Efficient Glucose Sensing

Gayakwad,

Manjuladevi,

Gupta

2023

IEEE Sensors J.

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The interfacial layer of single-walled carbon nanotubes (CNTs) introduced between the surface of the electrode and bio-ligands can enhance sensing performance by establishing amplified physical and chemical interaction between them. In this article, we report that an efficient glucose-sensing nanostratified layer can be created on the surface of the working electrode (gold surface) of an electrochemical platform by immobilizing glucose oxidase (GOx) on the highly organized Langmuir-Blodgett (LB) film of octadecylamine functionalized single-walled CNTs (ODACNTs). The amine group of ODACNTs provides stability to the Langmuir monolayer (LM) at the air-water (a/w) interface which is essential for the fabrication of highly ordered LB film. The sensing of glucose was performed in an aqueous medium using GOx immobilized layer onto the LB film and drop-casted film of ODACNTs modified working electrodes. The sensor fabricated using LB film modified electrodes offers a very wide concentration range (10 pM-1 mM), a very low limit of detection (LOD) (10 pM), and a sensitivity 2.8× better than that of drop-casted modified electrodes. The enhanced performance of LB film modified electrode is due to some coherent performance of organized nanotubes in the LB film as compared to a random network of the nanotubes in drop-casted film. The electrodes were characterized at different stages of sensing using grazing incidence X-ray diffraction, field emission scanning electron microscope (FESEM), Raman, and attenuated total internal reflection (ATR)-FTIR spectroscopies.

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“…First, the solid substrate is immersed in the LB trough containing the subphase liquid, and the molecular or colloidal particles are then deposited on the substrate surface (figure 1(a)). Once the desired pressure value is reached, the film is transferred to the solid substrate by slowly pulling the substrate upward to form a single or multilayer film of molecular/particle thickness (figures 1(b) and (c)) [7]. In the LB instrument, the compression phasing is usually manipulated by observing changes in the surface pressures of the subphases.…”

Section: Introductionmentioning

confidence: 99%

Recent developments in the preparation and assembly of two-dimensional plate materials in Langmuir–Blodgett films: a review

Zhao

Wang

et al. 2023

Nano Futures

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In recent years, two-dimensional (2D) plate materials have become the most attractive class of candidate materials with a wide range of potential applications due to their unique structural characteristics and physicochemical properties. Starting from graphene, 2D plate materials have become a large family with many members and diverse categories. Especially in the recent past years, we have made some significant breakthroughs in the field of 2D materials. Langmuir-Blodgett (LB) technology is an advanced technology for preparing ultrathin films with highly ordered molecules by using its unique dynamic interface in the preparation process, which can effectively control and adjust film material with layered nanostructures. With the advancement of LB technology, different thin film materials need to be prepared to realize various functions. This paper summarizes the research progress and future perspectives of LB technology based on 2D materials.

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Langmuir–Blodgett films of stearic acid deposited on substrates at different orientations relative to compression direction: alignment layer for nematic liquid crystal

Cited by 8 publications

References 22 publications

In situ investigation of the oxidation of a phospholipid monolayer by reactive oxygen species

In situ investigation of the oxidation of a phospholipid monolayer by reactive oxygen species

Interfacial Langmuir-Blodgett Layer of Functionalized Single-Walled Carbon Nanotubes for Efficient Glucose Sensing

Recent developments in the preparation and assembly of two-dimensional plate materials in Langmuir–Blodgett films: a review

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