Unique supramolecular assembly through Langmuir – Blodgett (LB) technique

Hussain, Syed Arshad; Dey, Bapi; Bhattacharjee, D.; Mehta, N.

doi:10.1016/j.heliyon.2018.e01038

Cited by 87 publications

(72 citation statements)

References 169 publications

(269 reference statements)

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“…Since this review specifically focuses on polymer coatings, this section briefly discusses some of the main coating methods used for biopolymer coatings. The assembly of polymer into coatings and films can be done various methods such as layer by layer (LBL) [ 3 , 4 ], polymer brushes, dip coating, Langmuir-Blodgett (LB) [ 4 , 5 , 6 ], plasma based coating methods, spin coatings and hydrogels. In LBL method, positively and negatively charged polyelectrolytes are coated successively.…”

Section: Biopolymer Coating Methodsmentioning

confidence: 99%

Biopolymer Coatings for Biomedical Applications

Nathanael

2020

Polymers

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Biopolymer coatings exhibit outstanding potential in various biomedical applications, due to their flexible functionalization. In this review, we have discussed the latest developments in biopolymer coatings on various substrates and nanoparticles for improved tissue engineering and drug delivery applications, and summarized the latest research advancements. Polymer coatings are used to modify surface properties to satisfy certain requirements or include additional functionalities for different biomedical applications. Additionally, polymer coatings with different inorganic ions may facilitate different functionalities, such as cell proliferation, tissue growth, repair, and delivery of biomolecules, such as growth factors, active molecules, antimicrobial agents, and drugs. This review primarily focuses on specific polymers for coating applications and different polymer coatings for increased functionalization. We aim to provide broad overview of latest developments in the various kind of biopolymer coatings for biomedical applications, in order to highlight the most important results in the literatures, and to offer a potential outline for impending progress and perspective. Some key polymer coatings were discussed in detail. Further, the use of polymer coatings on nanomaterials for biomedical applications has also been discussed, and the latest research results have been reported.

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Section: Biopolymer Coating Methodsmentioning

confidence: 99%

Biopolymer Coatings for Biomedical Applications

Nathanael

2020

Polymers

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“…Figure 1b shows the optical image of monolayer and bilayer A3 films deposited on Si/SiO 2 substrate using Langmuir–Blodgett (LB) method. [ 21 ] The A3 molecule is highly polarized with a hydrophobic head and a hydrophilic tail, and as a result uniform layers of A3 can be achieved through specified treatments. The fabrication details can be found in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Self‐Erasable and Rewritable Optoexcitonic Platform for Antitamper Hardware

Cheng

Yang

Kim

et al. 2020

Advanced Optical Materials

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In this work nanoscale strain engineering is utilized to create a self‐erasable and rewritable platform for antitamper hardware. The reversible structural change between trans and cis isomers in azobenzene (A3) molecules is utilized to strain the overlying tungsten diselenide (WSe2) monolayer, thereby affecting its optical bandgap. Using such hybrid material combination, large (>1%) local effective strain is generated that results in dramatic shift (>11 nm) in photoluminescence wavelength. The strain can be rapidly relaxed under exposure to visible light or can be retained up to seven days under dark condition. Thus, by utilizing hyperspectral imaging, a self‐erasable and rewritable optoexcitonic platform is demonstrated that responds to environmental changes (light/temperature) to detect tampering of hardware system. In addition, the results open avenues for varied applications in information storage, time sensitive self‐destructive memories to light detection.

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“…The driving forces operating for the arrangement of the molecules at the air-liquid interface are mainly van der Waals interactions, hydrogen bonding, and/or electrostatic interactions. In addition, the pH of the liquid subphase, as well as the presence of ions can also govern the organization of the molecules [261]. Once the monolayer at the air-water interface, Langmuir film, is well-formed, it can be transferred onto a solid substrate to fabricate a Langmuir-Blodgett (LB) film.…”

Section: The Langmuir-blodgett Techniquementioning

confidence: 99%

“…The historical background and comprehensive descriptions of the technique have been reported before [90,91,261,271,272]. The Langmuir-Blodgett technique, illustrated in Figure 3, involves a more complex monolayer formation process compared to the SA method.…”

Section: The Langmuir-blodgett Techniquementioning

confidence: 99%

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

2020

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The societal impact of the electronics industry is enormous—not to mention how this industry impinges on the global economy. The foreseen limits of the current technology—technical, economic, and sustainability issues—open the door to the search for successor technologies. In this context, molecular electronics has emerged as a promising candidate that, at least in the short-term, will not likely replace our silicon-based electronics, but improve its performance through a nascent hybrid technology. Such technology will take advantage of both the small dimensions of the molecules and new functionalities resulting from the quantum effects that govern the properties at the molecular scale. An optimization of interface engineering and integration of molecules to form densely integrated individually addressable arrays of molecules are two crucial aspects in the molecular electronics field. These challenges should be met to establish the bridge between organic functional materials and hard electronics required for the incorporation of such hybrid technology in the market. In this review, the most advanced methods for fabricating large-area molecular electronic devices are presented, highlighting their advantages and limitations. Special emphasis is focused on bottom-up methodologies for the fabrication of well-ordered and tightly-packed monolayers onto the bottom electrode, followed by a description of the top-contact deposition methods so far used.

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Unique supramolecular assembly through Langmuir – Blodgett (LB) technique

Cited by 87 publications

References 169 publications

Biopolymer Coatings for Biomedical Applications

Biopolymer Coatings for Biomedical Applications

Self‐Erasable and Rewritable Optoexcitonic Platform for Antitamper Hardware

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

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