Nano-demixing as a novel strategy for magnetic field responsive systems: the case of dibutyl phosphate/bis(2-ethylhexyl)amine systems

Pochylski, Mikołaj; Rossi, Cesare Oliviero; Nicotera, Isabella; Liveri, Vincenzo Turco; Calandra, Pietro

doi:10.1039/c6ra02386j

Cited by 17 publications

(9 citation statements)

References 26 publications

(27 reference statements)

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“…This is a very cheap, easy, fast, and new way to obtain local intermolecular self-assembly systems with enhanced proton conductivity [340], one-dimensional anomalous proton diffusion [341], peculiar solubilizing properties towards inorganic salts [342], non-Arrhenian behaviour of conductivity [343]. Even ionic liquids [344] and smart materials readily responding to a magnetic field [345] can be prepared. The similar strategy can be applied to bio-related substances such as amphiphiles, lipids, peptides, proteins, and nucleic acids, which can be obtained from natural resources without further synthesis.…”

Section: Future Perspectivesmentioning

confidence: 99%

Self-assembly as a key player for materials nanoarchitectonics

Ariga

Nishikawa

Mori

et al. 2019

Science and Technology of Advanced Materials

354

255

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The development of science and technology of advanced materials using nanoscale units can be conducted by a novel concept involving combination of nanotechnology methodology with various research disciplines, especially supramolecular chemistry. The novel concept is called 'nanoarchitectonics' where self-assembly processes are crucial in many cases involving a wide range of component materials. This review of self-assembly processes reexamines recent progress in materials nanoarchitectonics. It is composed of three main sections: (1) the first short section describes typical examples of self-assembly research to outline the matters discussed in this review; (2) the second section summarizes self-assemblies at interfaces from general viewpoints; and (3) the final section is focused on self-assembly processes at interfaces. The examples presented demonstrate the strikingly wide range of possibilities and future potential of self-assembly processes and their important contribution to materials nanoarchitectonics. The research examples described in this review cover variously structured objects including molecular machines, molecular receptors, molecular pliers, molecular rotors, nanoparticles, nanosheets, nanotubes, nanowires, nanoflakes, nanocubes, nanodisks, nanoring, block copolymers, hyperbranched polymers, supramolecular polymers, supramolecular gels, liquid crystals, Langmuir monolayers, Langmuir-Blodgett films, self-assembled monolayers, thin films, layer-by-layer structures, breath figure motif structures, two-dimensional molecular patterns, fullerene crystals, metal-organic frameworks, coordination polymers, coordination capsules, porous carbon spheres, mesoporous materials, polynuclear catalysts, DNA origamis, transmembrane channels, peptide conjugates, and vesicles, as well as functional materials for sensing, surface-enhanced Raman spectroscopy, photovoltaics, charge transport, excitation energy transfer, lightharvesting, photocatalysts, field effect transistors, logic gates, organic semiconductors, thin-film-based devices, drug delivery, cell culture, supramolecular differentiation, molecular recognition, molecular tuning, and hand-operating (hand-operated) nanotechnology.

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Section: Future Perspectivesmentioning

confidence: 99%

Self-assembly as a key player for materials nanoarchitectonics

Ariga

Nishikawa

Mori

et al. 2019

Science and Technology of Advanced Materials

354

255

View full text Add to dashboard Cite

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“…In addition, it is worth noticing that it has been recently found that ionic liquids can be easily prepared by simply mixing two opportunely chosen amphiphilic liquids [18]. In this case, further additional properties can arise, like anysotropical self-assembly [19,20], response to an external magnetic field [21], enhanced proton conductivity [22], and enhanced capability of salt solubilization [23], which can open a wide scenario of new and promising applications.…”

Section: Ionic Liquidsmentioning

confidence: 99%

Recent Developments on 1,3-Dipolar Cycloaddition Reactions by Catalysis in Green Solvents

et al. 2020

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The use of eco-compatible synthetic procedures in organic reactions and, in particular, in 1,3-dipolar cycloaddition reactions, has recently received a great deal of attention and considerable progress has been achieved in this area in the last years. This review summarizes the approaches currently employed to synthesize heterocyclic compounds by catalyzed 1,3-dipolar cycloadditions in green solvents in the last six years. Our choice to do a selection of the literature from 2014 to 2019 was made considering the absence of a recent review about this period, to our knowledge. Several examples to construct heterocycles by 1,3-dipolar cycloadditions will be discussed in this work subdivided in function of the most important class of non-conventional and green solvents, i.e., ionic liquids (ILs), deep eutectic solvents (DES), and water.

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“…This would further increase the local anisotropy helping the building up of bigger aggregates (see later). A comparison with the magnetically induced birefringence shown by dibutylphosphate/bis (2-ethylhexyl) amine [18], i.e., where the amine molecular architecture is bigger having two branched alkyl tails (instead of a single and short one as in the case of PA), can be useful. In that mixture, the magnitude of the induced birefringence is even higher (|∆n/λ| > 0.8) and occurs at a different composition (amine molar ratio of 0.7).…”

Section: Datamentioning

confidence: 99%

“…The data suggest that it is particularly high due to the presence of the structures themselves. Earlier translational diffusion measurement taken on the similar system [18] indicated that local molecular motions are somehow influenced by the structural complexity of the system. However, measured values of diffusivities cannot explain the drastically slow kinetics observed after external magnetic field was turned off.…”

Section: Datamentioning

confidence: 99%

“…In some cases, even ionic liquids are produced [12]. In this ambit, not only these diversified properties promote their use in several research fields, for example as amphiphile self-assembly reaction media [13,14] or reaction catalyst in organic synthesis [15,16], as a solvent phase in microemulsions and emulsions or in the emerging field of nanostructured inorganic materials synthesis [17], but a peculiarly intriguing property deserving attention is the optical birefringence arising as a response to an external magnetic field [18].…”

Section: Introductionmentioning

confidence: 99%

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Optical Birefringence Growth Driven by Magnetic Field in Liquids: The Case of Dibutyl Phosphate/Propylamine System

Pochylski

Lombardo²,

Calandra

2019

Applied Sciences

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Magnetically-induced birefringence is usually low in molecular liquids owing to the low magnetic energy of molecules with respect to the thermal one. Despite this, it has been found that a mixture of dibutyl phosphate and propylamine at propylamine molar ratio (X) around 0.33 surprisingly gives an intense effect (∆n/λ ≈ −0.1 at 1 Tesla). In this paper the time- and intensity- response to the magnetic field of such mixture have been studied. It was found that the reaction to the magnetic field is unusually slow (from several minutes to hours) depending of the magnetic field intensity. On the basis of the data, the model of orientable dipoles dispersed in a matrix enables to interpret the magnetic field-induced self-assembly in terms of soft molecules-based nanostructures. The analogy with systems made of magnetically polarizable (solid or soft) particles dispersed in liquid carrier allows understanding, at the microscopic scale, the molecular origin and the supra-molecular dynamics involved in the observed behavior. The data present a novel phenomenon in liquid phase where the progressive building up/change of ordered and strongly interacting amphiphiles is driven by the magnetic field.

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Nano-demixing as a novel strategy for magnetic field responsive systems: the case of dibutyl phosphate/bis(2-ethylhexyl)amine systems

Abstract: Pure surfactant liquids and their binary mixtures, owing to the amphiphilic nature of the molecules involved, can exhibit nano-segregation and peculiar transport properties with the formation of magnetic field-responsive supramolecular structures.

Cited by 17 publications

References 26 publications

Self-assembly as a key player for materials nanoarchitectonics

Self-assembly as a key player for materials nanoarchitectonics

Recent Developments on 1,3-Dipolar Cycloaddition Reactions by Catalysis in Green Solvents

Optical Birefringence Growth Driven by Magnetic Field in Liquids: The Case of Dibutyl Phosphate/Propylamine System

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