Penetration of Langmuir Monolayers by Soluble Amphiphilic Molecules

Langmuir ◽  
1999 ◽  
Vol 15 (5) ◽  
pp. 1784-1790 ◽  
Author(s):  
V. B. Fainerman ◽  
D. Vollhardt
Keyword(s):  
Langmuir Monolayers ◽  
Amphiphilic Molecules

Energetics and structures of the tilted phases of fatty acid Langmuir monolayers

2020 ◽  
Vol 22 (21) ◽  
pp. 12092-12103
Author(s):  
Óscar Toledano ◽  
Miguel A. Rubio ◽  
Óscar Gálvez
Keyword(s):  
Fatty Acid ◽  
Langmuir Monolayers ◽  
Dimensional Structure ◽  
Amphiphilic Molecules ◽  
Air Interface

Langmuir monolayers are monomolecular deep films composed of amphiphilic molecules which are typically confined to a water/air interface in a bi-dimensional structure.

Energetics and structure of Langmuir monolayers of palmitic acid: a DFT study

2019 ◽  
Vol 21 (21) ◽  
pp. 11203-11213 ◽  
Author(s):  
Óscar Toledano ◽  
Óscar Gálvez
Keyword(s):  
Palmitic Acid ◽  
Langmuir Monolayers ◽  
Dft Study ◽  
Dimensional Structure ◽  
Water Interface ◽  
Amphiphilic Molecules ◽  
Air Water Interface

Langmuir monolayers are monomolecular wide films composed of amphiphilic molecules with a bi-dimensional structure typically formed at the air–water interface.

The Effect of the Concentration of Non-ionic Surfactant Amphiphilic Molecules on the Structure and Gelation in Aqueous Dispersions

2020 ◽  
Vol 65 (9) ◽  
pp. 1475-1483
Author(s):  
S. A. Alekseeva ◽  
I. V. Baranets ◽  
V. N. Beresnev ◽  
T. A. Nadervel ◽  
A. D. Kryuchkov ◽  
...  
Keyword(s):  
Ionic Surfactant ◽  
Aqueous Dispersions ◽  
Amphiphilic Molecules

Stimuli-Responsive Supramolecular Chirality Switching and Nanoassembly Constructed by n-Shaped Amphiphilic Molecules in Aqueous Solution

Langmuir ◽  
2021 ◽  
Vol 37 (3) ◽  
pp. 1215-1224
Author(s):  
Yuntian Yang ◽  
Qingqing Han ◽  
Yi-rong Pei ◽  
Shengsheng Yu ◽  
Zhegang Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Stimuli Responsive ◽  
Supramolecular Chirality ◽  
Amphiphilic Molecules

scholarly journals Formation of Amphiphilic Molecules from the Most Common Marine Polysaccharides, toward a Sustainable Alternative?

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4445
Author(s):  
Tiphaine Wong ◽  
Lorette Brault ◽  
Eric Gasparotto ◽  
Romuald Vallée ◽  
Pierre-Yves Morvan ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Carboxylic Acid ◽  
Bioactive Compounds ◽  
Biological Properties ◽  
Cross Linking ◽  
Structural Modifications ◽  
Chemical Structures ◽  
Amphiphilic Molecules

Marine polysaccharides are part of the huge seaweeds resources and present many applications for several industries. In order to widen their potential as additives or bioactive compounds, some structural modifications have been studied. Among them, simple hydrophobization reactions have been developed in order to yield to grafted polysaccharides bearing acyl-, aryl-, alkyl-, and alkenyl-groups or fatty acid chains. The resulting polymers are able to present modified physicochemical and/or biological properties of interest in the current pharmaceutical, cosmetics, or food fields. This review covers the chemical structures of the main marine polysaccharides, and then focuses on their structural modifications, and especially on hydrophobization reactions mainly esterification, acylation, alkylation, amidation, or even cross-linking reaction on native hydroxyl-, amine, or carboxylic acid functions. Finally, the question of the necessary requirement for more sustainable processes around these structural modulations of marine polysaccharides is addressed, considering the development of greener technologies applied to traditional polysaccharides.

scholarly journals Luminescent Supramolecular Nano- or Microstructures Formed in Aqueous Media by Amphiphile-Noble Metal Complexes

2020 ◽  
Vol 2020 ◽  
pp. 1-24 ◽  
Author(s):  
Carmen Cretu ◽  
Loredana Maiuolo ◽  
Domenico Lombardo ◽  
Elisabeta I. Szerb ◽  
Pietro Calandra
Keyword(s):  
Noble Metal ◽  
Smart Materials ◽  
Self Assembly ◽  
Noble Metals ◽  
Photophysical Properties ◽  
Aqueous Media ◽  
Molecular Architecture ◽  
Stimuli Responsive ◽  
Panoramic View ◽  
Amphiphilic Molecules

The involvement of metal ions within the self-assembly spontaneously occurring in surfactant-based systems gives additional and interesting features. The electronic states of the metal, together with the bonds that can be established with the organic amphiphilic counterpart, are the factors triggering new photophysical properties. Moreover, the availability of stimuli-responsive supramolecular amphiphile assemblies, able to disassemble in a back-process, provides reversible switching particularly useful in novel approaches and applications giving rise to truly smart materials. In particular, small amphiphiles with an inner distribution, within their molecular architecture, of various polar and apolar functional groups, can give a wide variety of interactions and therefore enriched self-assemblies. If it is joined with the opportune presence and localization of noble metals, whose chemical and photophysical properties are undiscussed, then very interesting materials can be obtained. In this minireview, the basic concepts on self-assembly of small amphiphilic molecules with noble metals are shown with particular reference to the photophysical properties aiming at furnishing to the reader a panoramic view of these exciting problematics. In this respect, the following will be shown: (i) the principles of self-assembly of amphiphiles that involve noble metals, (ii) examples of amphiphiles and amphiphile-noble metal systems as representatives of systems with enhanced photophysical properties, and (iii) final comments and perspectives with some examples of modern applications.

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