Pd‐Promoted Homocoupling Reactions of Unsaturated Silanes in Aqueous Micelles

Cicco, Stefania R.; Farinola, Gianluca M.; Martinelli, Carmela; Naso, Francesco; Tiecco, Marcello

doi:10.1002/ejoc.201000021

Cited by 23 publications

(9 citation statements)

References 49 publications

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“…These methods are based on the use of covalent surface modification, non-covalent surface modification and mechanical mixing, respectively. In aqueous solutions, ultrasonic treatment is the most standard mixing method, but suitable physical dispersants represent an alternative to avoid the presence of large agglomerates and filaments [9,12] .…”

Section: Overviewmentioning

confidence: 99%

Towards smart concrete for smart cities: Recent results and future application of strain-sensing nanocomposites

et al. 2016

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The use of smart technologies combined with city planning have given rise to smart cities, which empower modern urban systems with the efficient tools to cope with growing needs from increasing population sizes. For example, smart sensors are commonly used to improve city operations and management by tracking traffic, monitoring crowds at events, and performance of utility systems and public transportation. Recent advances in nanotechnologies have enabled a new family of sensors, termed self-sensing materials, which would provide smart cities with means to also monitor structural health of civil infrastructures. This includes smart concrete, which has the potential to provide any concrete structure with self-sensing capabilities. Such functional property is obtained by correlating the variation of internal strain with the variation of appropriate material properties, such as electrical resistance. Unlike conventional off-the-shelf structural health monitoring sensors, these innovative transducers combine enhanced durability and distributed measurements, thus providing greater scalability in terms of sensing size and cost. This paper presents recent advances on sensors fabricated using a cementitious matrix with nanoinclusions of Carbon Nanotubes (CNTs). The fabrication procedures providing homogeneous piezoresistive properties are presented, and the electromechanical behavior of the sensors is investigated under static and dynamic loads. Results show that the proposed sensors compare well against existing technologies of stress/strain monitoring, like strain gauges and accelerometers. Example of possible field applications for the developed nanocomposite cement-based sensors include traffic monitoring, parking management and condition assessment of masonry and concrete structures.

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Section: Overviewmentioning

confidence: 99%

Towards smart concrete for smart cities: Recent results and future application of strain-sensing nanocomposites

et al. 2016

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“…Surfactants are molecules that find applications in a wide range of topics thanks to their amphipathic structure. , This feature permits these compounds to interact, in fact, with different kinds of molecules and macromolecules, as well as with biological ones. The examples of the applications of surfactants are numerous, a nonexhaustive list of which is represented by DNA interaction for gene delivery, vectors for the solubilization and transport of hydrophobic solutes, and use as components of novel reaction media or solvents. − In all of these topics, small modulations in the molecular structures of the amphiphiles can lead to important changes in the results observed, so a fundamental knowledge of their properties is needed for productive applications.…”

Section: Introductionmentioning

confidence: 99%

Ionic Conductivity as a Tool To Study Biocidal Activity of Sulfobetaine Micelles against Saccharomyces cerevisiae Model Cells

et al. 2016

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Zwitterionic sulfobetaine surfactants are used in pharmaceutical or biomedical applications for the solubilization and delivery of hydrophobic molecules in aqueous medium or in biological environments. In a screening on the biocidal activity of synthetic surfactants on microbial cells, remarkable results have emerged with sulfobetaine amphiphiles. The interaction between eight zwitterionic sulfobetaine amphiphiles and Saccharomyces cerevisiae model cells was therefore analyzed. S. cerevisiae yeast cells were chosen, as they are a widely used unicellular eukaryotic model organism in cell biology. Conductivity measurements were used to investigate the interaction between surfactant solution and cells. Viable counts measurements were performed, and the mortality data correlated with the conductivity profiles very well, in terms of the inflection points (IPs) observed in the curves and in terms of supramolecular properties of the aggregates. A Fourier transform infrared (FTIR)-based bioassay was then performed to determine the metabolomic stress-response of the cells subjected to the action of zwitterionic surfactants. The surfactants showed nodal concentration (IPs) with all the techniques in their activities, corresponding to the critical micellar concentrations of the amphiphiles. This is due to the pseudocationic behavior of sulfobetaine micelles, because of their charge distribution and charge densities. This behavior permits the interaction of the micellar aggregates with the cells, and the structure of the surfactant monomers has impact on the mortality and the metabolomic response data observed. On the other hand, the concentrations that are necessary to provoke a biocidal activity do not promote these amphiphiles as potential antimicrobial agents. In fact, they are much higher than the ones of cationic surfactants.

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“…The goal of obtaining novel media with low environmental impact represents, in fact, a challenge in modern chemistry, considering the toxicity and the high vapour pressure of traditional organic solvents. [1][2][3] Ionic liquids (ILs) are surely the most studied and developed solvents in this eld in the last decades. ILs are formed by organic cations and organic or inorganic anions, and they are liquid at room temperature or at temperatures under 100 C. 4 ILs have important physico-chemical advantages in terms of "greenness" compared to typical organic solvents, a non-exhaustive list of which includes: low vapour pressure, high thermal stability and non-ammability.…”

Section: Introductionmentioning

confidence: 99%

Room temperature deep eutectic solvents of (1S)-(+)-10-camphorsulfonic acid and sulfobetaines: hydrogen bond-based mixtures with low ionicity and structure-dependent toxicity

et al. 2015

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Pd‐Promoted Homocoupling Reactions of Unsaturated Silanes in Aqueous Micelles

Cited by 23 publications

References 49 publications

Towards smart concrete for smart cities: Recent results and future application of strain-sensing nanocomposites

Towards smart concrete for smart cities: Recent results and future application of strain-sensing nanocomposites

Ionic Conductivity as a Tool To Study Biocidal Activity of Sulfobetaine Micelles against Saccharomyces cerevisiae Model Cells

Room temperature deep eutectic solvents of (1S)-(+)-10-camphorsulfonic acid and sulfobetaines: hydrogen bond-based mixtures with low ionicity and structure-dependent toxicity

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