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Advances in Colloid and Interface Science

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https://www.readbyqxmd.com/read/28318490/emulsion-based-synthesis-of-porous-silica
#1
REVIEW
Hanna Gustafsson, Krister Holmberg
We review the use of various types of emulsions as media for synthesis of porous silica particles. The use of high internal phase emulsions, i.e. emulsions with a high ratio of dispersed to continuous phase, is an approach that has attracted considerable attention. Polymerization of the continuous phase followed by removal of the dispersed phase leads to a material with an even distribution of pores if the emulsion droplets are uniform in size. Another route is to use particle stabilized emulsions as template...
March 11, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28314438/effect-of-ligand-on-particle-size-and-morphology-of-nanostructures-synthesized-by-thermal-decomposition-of-coordination-compounds
#2
REVIEW
Zeinab Fereshteh, Masoud Salavati-Niasari
Thermal decomposition of organometallic and various coordination compounds are known as general method to synthesize a wide range of nanostructures including metals, metal oxides and sulfides. Herein, in order to coordinate metals and prepare suitable precursor - due to the efficient role of precursor on the particle size and morphology of products - appropriate ligands will be introduced.
March 8, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28285779/saponins-self-assembly-and-behavior-at-aqueous-interfaces
#3
REVIEW
Sandra Böttcher, Stephan Drusch
Saponins are interfacially active ingredients in plants consisting of a hydrophobic aglycone structure with hydrophilic sugar residues. Variations in aglycone structure as well as type and amount of sugar residues occur depending on the botanical origin. Saponins are a heterogeneous and broad class of natural substances and therefore the relationship between molecular structure and interfacial properties is complex and, yet, not completely understood. A wide range of research focused either on structural elucidation of saponins or interfacial properties...
March 1, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28245904/non-aqueous-foams-current-understanding-on-the-formation-and-stability-mechanisms
#4
REVIEW
Anne-Laure Fameau, Arnaud Saint-Jalmes
The most common types of liquid foams are aqueous ones, and correspond to gas bubbles dispersed in an aqueous liquid phase. Non-aqueous foams are also composed of gas bubbles, but dispersed in a non-aqueous solvent. In the literature, articles on such non-aqueous foams are scarce; however, the study of these foams has recently emerged, especially because of their potential use as low calories food products and of their increasing importance in various other industries (such as, for instance, the petroleum industry)...
February 21, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28223074/recent-advances-in-biomedical-applications-of-fluorescent-gold-nanoclusters
#5
REVIEW
Youkun Zheng, Lanmei Lai, Weiwei Liu, Hui Jiang, Xuemei Wang
Fluorescent gold nanoclusters (AuNCs) are emerging as novel fluorescent materials and have attracted more and more attention in the field of biolabeling, biosensing, bioimaging and targeted cancer treatment because of their unusual physicochemical properties, such as long fluorescence lifetime, ultrasmall size, large Stokes shift, strong photoluminescence, as well as excellent biocompatibility and photostability. Recently, significant efforts have been committed to the preparation, functionalization and biomedical application studies of fluorescent AuNCs...
February 16, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28259207/polymer-decorated-gold-nanoparticles-in-nanomedicine-conjugates
#6
REVIEW
Ignác Capek
Noble metal, especially gold nanoparticles and their conjugates with biopolymers have immense potential for disease diagnosis and therapy on account of their surface plasmon resonance (SPR) enhanced light scattering and absorption. Conjugation of noble metal nanoparticles to ligands specifically targeted to biomarkers on diseased cells allows molecular-specific imaging and detection of disease. The development of smart gold nanoparticles (AuNPs) that can deliver therapeutics at a sustained rate directly to cancer cells may provide better efficacy and lower toxicity for treating cancer tumors...
February 15, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28213985/capillary-dynamics-driven-by-molecular-self-layering
#7
Pingkeng Wu, Alex Nikolov, Darsh Wasan
Capillary dynamics is a ubiquitous everyday phenomenon. It has practical applications in diverse fields, including ink-jet printing, lab-on-a-chip, biotechnology, and coating. Understanding capillary dynamics requires essential knowledge on the molecular level of how fluid molecules interact with a solid substrate (the wall). Recent studies conducted with the surface force apparatus (SFA), atomic force microscope (AFM), and statistical mechanics simulation revealed that molecules/nanoparticles confined into the film/wall surfaces tend to self-layer into 2D layer/s and even 2D in-layer with increased confinement and fluid volume fraction...
February 10, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28202131/how-irreversible-adsorption-affects-interfacial-properties-of-polymers
#8
REVIEW
Simone Napolitano, Michele Sferrazza
Growing experimental evidence shows that the behavior of polymer chains confined at the nanoscale level strongly depends on the degree of adsorption correlated to the number density of monomers pinned onto the supporting substrate. In this contribution, after introducing the physics behind the mechanisms of irreversible adsorption, we review recent experimental observations on how adsorption affects properties of polymer melts confined in 1D, focusing on those related to the thermal glass transition, maximum water uptake, viscosity and crystallization...
February 9, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28219622/particles-adsorbed-at-various-non-aqueous-liquid-liquid-interfaces
#9
REVIEW
Miguel Angel Fernandez-Rodriguez, Bernard P Binks, Miguel Angel Rodriguez-Valverde, Miguel Angel Cabrerizo-Vilchez, Roque Hidalgo-Alvarez
Particles adsorbed at liquid interfaces are commonly used to stabilise water-oil Pickering emulsions and water-air foams. The fundamental understanding of the physics of particles adsorbed at water-air and water-oil interfaces is improving significantly due to novel techniques that enable the measurement of the contact angle of individual particles at a given interface. The case of non-aqueous interfaces and emulsions is less studied in the literature. Non-aqueous liquid-liquid interfaces in which water is replaced by other polar solvents have properties similar to those of water-oil interfaces...
February 7, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28236447/withdrawing-a-solid-from-a-bath-how-much-liquid-is-coated
#10
REVIEW
Emmanuelle Rio, François Boulogne
A solid withdrawn from a liquid bath entrains a film. In this review, after recalling the predictions and results for pure Newtonian liquids coated on simple solids, we analyze the deviations to this ideal case exploring successively three potential sources of complexity: the liquid-air interface, the bulk rheological properties of the liquid and the mechanical or chemical properties of the solid. For these different complexities, we show that significant effects on the film thickness are observed experimentally and we summarize the theoretical analysis presented in the literature, which attempt to rationalize these measurements...
February 4, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28159168/delivery-systems-for-antimicrobial-peptides
#11
REVIEW
Randi Nordström, Martin Malmsten
Due to rapidly increasing resistance development against conventional antibiotics, finding novel approaches for the treatment of infections has emerged as a key health issue. Antimicrobial peptides (AMPs) have attracted interest in this context, and there is by now a considerable literature on the identification such peptides, as well as on their optimization to reach potent antimicrobial and anti-inflammatory effects at simultaneously low toxicity against human cells. In comparison, delivery systems for antimicrobial peptides have attracted considerably less interest...
January 25, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28139217/recent-advances-in-chemiluminescence-based-on-carbonaceous-dots
#12
REVIEW
Syed Niaz Ali Shah, Jin-Ming Lin
Herein, a broad overview concerning the most recent progress of carbon dots (CDs) in chemiluminescence (CL) as well as the mechanisms and applications are presented. CDs have excellent optical and electronic properties and are very important advancement in the fast growing domain of nanotechnology. CDs enhance the ultraweak CL of different systems. The mechanisms and applications of these enhanced CL reactions are discussed. It is worthy to note that CDs participate in CL reactions as catalysts, energy acceptors or are directly involved in redox reactions with radicals in CL systems...
January 19, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28143675/fabrication-techniques-for-bioinspired-mechanically-durable-superliquiphobic-surfaces-for-water-oil-and-surfactant-repellency
#13
REVIEW
Samuel Martin, Philip S Brown, Bharat Bhushan
Nature provides inspiration for liquid-repellant and low-adhesive surfaces, such as the lotus leaf and pitcher plant. While water-repellency is frequently found in nature, oil-repellency and surfactant-repellency are uncommon to nonexistent. To obtain oil- and surfactant-repellency, hierarchical, re-entrant, bioinspired surface structures along with low surface energy materials are needed. This overview presents wetting literature, common liquids and their composition, and fabrication techniques for superliquiphobic surfaces with repellency toward water, oil, and surfactant-containing liquids...
March 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28132673/recent-advances-in-the-study-and-design-of-parahydrophobic-surfaces-from-natural-examples-to-synthetic-approaches
#14
REVIEW
Caroline R Szczepanski, Frédéric Guittard, Thierry Darmanin
Parahydrophobic surfaces are an interesting class of materials that combines both high contact angles and very strong adhesion with wetting fluids, most commonly water. This unique set of properties makes parahydrophobic surfaces attractive for a variety of applications, including water harvesting and collection, guided fluid transport, and membrane development, amongst many others. Taking inspiration from natural surfaces that display this same behavior such as rose petals and gecko feet, synthetic approaches aim to incorporate the nano- and micro-scale topography as well as the low surface energy chemistry found on these interfaces...
March 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28063520/zeta-potential-of-artificial-and-natural-calcite-in-aqueous-solution
#15
REVIEW
Dawoud Al Mahrouqi, Jan Vinogradov, Matthew D Jackson
Despite the broad range of interest and applications, controls on calcite surface charge in aqueous solution, especially at conditions relevant to natural systems, remain poorly understood. The primary data source to understand calcite surface charge comprises measurements of zeta potential. Here we collate and review previous measurements of zeta potential on natural and artificial calcite and carbonate as a resource for future studies, compare and contrast the results of these studies to determine key controls on zeta potential and where uncertainties remain, and report new measurements of zeta potential relevant to natural subsurface systems...
February 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28043396/cnt-polymer-interface-in-polymeric-composites-and-its-sensitivity-study-at-different-environments
#16
REVIEW
Rajesh Kumar Prusty, Dinesh Kumar Rathore, Bankim Chandra Ray
The environmental durability of polymer based composites has always been a critical concern over its short- and long-term performances. The degree of environmental degradation is supposed to have different mechanisms and kinetics at the polymer/reinforcement interfaces in comparison to the bulk polymer matrix. Differential degradation could possibly attribute a stressed state in the material, especially at the interfaces. Present review is focused on the roles of reinforcing CNT on the performance of the polymeric nanocomposites in different in-service environments (the environmental parameters include temperature, moisture, UV light, low earth orbit space environment, electromagnetic waves)...
February 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28034309/designing-biopolymer-microgels-to-encapsulate-protect-and-deliver-bioactive-components-physicochemical-aspects
#17
REVIEW
David Julian McClements
Biopolymer microgels have considerable potential for their ability to encapsulate, protect, and release bioactive components. Biopolymer microgels are small particles (typically 100nm to 1000μm) whose interior consists of a three-dimensional network of cross-linked biopolymer molecules that traps a considerable amount of solvent. This type of particle is also sometimes referred to as a nanogel, hydrogel bead, biopolymer particles, or microsphere. Biopolymer microgels are typically prepared using a two-step process involving particle formation and particle gelation...
February 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28024645/graphene-oxide-based-nanohybrid-proton-exchange-membranes-for-fuel-cell-applications-an-overview
#18
REVIEW
Ravi P Pandey, Geetanjali Shukla, Murli Manohar, Vinod K Shahi
In the context of many applications, such as polymer composites, energy-related materials, sensors, 'paper'-like materials, field-effect transistors (FET), and biomedical applications, chemically modified graphene was broadly studied during the last decade, due to its excellent electrical, mechanical, and thermal properties. The presence of reactive oxygen functional groups in the grapheme oxide (GO) responsible for chemical functionalization makes it a good candidate for diversified applications. The main objectives for developing a GO based nanohybrid proton exchange membrane (PEM) include: improved self-humidification (water retention ability), reduced fuel crossover (electro-osmotic drag), improved stabilities (mechanical, thermal, and chemical), enhanced proton conductivity, and processability for the preparation of membrane-electrode assembly...
February 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/27988019/nano-carbohydrates-synthesis-and-application-in-genetics-biotechnology-and-medicine
#19
REVIEW
Ali Jebali, Elham Khajeh Nayeri, Sima Roohana, Shiva Aghaei, Maede Ghaffari, Karim Daliri, Garcia Fuente
Combining nanoparticles with carbohydrate has triggered an exponential growth of research activities for the design of novel functional bionanomaterials, nano-carbohydrates. Recent advances in versatile synthesis of glycosylated nanoparticles have paved the way towards diverse biomedical applications. The accessibility of a wide variety of these structured nanosystems, in terms of shape, size, and organization around stable nanoparticles, has readily contributed to their development and application in nanomedicine...
February 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28215495/foreword
#20
EDITORIAL
Paul Dubin, Sarah Perry, Yisheng Xu
No abstract text is available yet for this article.
January 2017: Advances in Colloid and Interface Science
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