Preparation of 1, 2, 3-Triazole-Functionalized Polystyrene Diblock Copolymer and Its Properties of Selective Adsorption of Proteins

The first few atomic layers of a solid can form a barrier between its interior and an often hostile environment. Although adsorption at the vacuum-solid interface has been studied in great detail, little is known about adsorption at the liquid-solid interface. Adsorption at a liquid-solid interface is of intrinsic interest, and is of technological importance because it provides a way to coat a surface with monolayer or multilayer structures. A pinhole free monolayer (with a reasonable dielectric constant) could lead to the development of nanoscale capacitors with unique characteristics and lithographic resists that surpass the resolution of their conventional counterparts. Chemically selective adsorption is of particular interest because it can be used to passivate a surface from external modification or change the wear and the lubrication properties of a surface to reflect new and useful properties. Immunochemical adsorption could be used to fabricate novel molecular electronic devices or to construct small, “smart”, unobtrusive sensors with the potential to detect a wide variety of preselected species at the molecular level. These might include a particular carcinogen in the environment, a specific type of explosive, a chemical agent, a virus, or even a tumor in the human body.

Download Full-text

Surface segregation in model symmetric polyolefin diblock copolymer melts

Journal de Physique II ◽

10.1051/jp2:1994258 ◽

1994 ◽

Vol 4 (12) ◽

pp. 2231-2248 ◽

Cited By ~ 6

Author(s):

Mohan Sikka ◽

Navjot Singh ◽

Frank S. Bates ◽

Alamgir Karim ◽

Sushil Satija ◽

...

Keyword(s):

Diblock Copolymer ◽

Surface Segregation ◽

Copolymer Melts

Download Full-text

Synthetic diblock copolymer micelles as vectors for siRNA delivery to knockdown RUNX1/ETO in acute myeloid leukaemia cells

Klinische Pädiatrie ◽

10.1055/s-0035-1550253 ◽

2015 ◽

Vol 227 (03) ◽

Author(s):

D Coleman ◽

D Fulton ◽

O Heidenreich

Keyword(s):

Acute Myeloid Leukaemia ◽

Myeloid Leukaemia ◽

Diblock Copolymer ◽

Sirna Delivery ◽

Copolymer Micelles ◽

Acute Myeloid

Download Full-text

Compatibilization of Blends of Crystallizable Polybutadiene Isomers by Precipitation and by Addition of Amorphous Diblock Copolymer

10.21236/ada232071 ◽

1991 ◽

Author(s):

Moira M. Nir ◽

Robert E. Cohen

Keyword(s):

Diblock Copolymer

Download Full-text

Application of iron-coated sand on the treatment of toxic metals

Water Science & Technology Water Supply ◽

10.2166/ws.2004.0124 ◽

2004 ◽

Vol 4 (5-6) ◽

pp. 335-341 ◽

Cited By ~ 2

Author(s):

Jae-Kyu Yang ◽

Yoon-Young Chang ◽

Sung-Il Lee ◽

Hyung-Jin Choi ◽

Seung-Mok Lee

Keyword(s):

Heavy Metals ◽

Selective Adsorption ◽

Complete Removal ◽

Batch Adsorption ◽

Column Experiments ◽

Adsorption Behaviour ◽

Optimum Amount ◽

Initial Ph ◽

New Treatment ◽

Coated Sand

Iron-coated sand (ICS) prepared by using FeCl3 and Joomoonjin sand widely used in Korea was used in this study. In batch adsorption kinetics, As(V) adsorption onto ICS was completed within 20 minutes, while adsorption of Pb(II), Cd(II), and Cu(II) onto ICS was slower than that of As(V) and strongly depended on initial pH. At pH 3.5, ICS showed a selective adsorption of Pb(II) compared to Cd( II) and Cu(II) . However, above pH 4.5, near complete removal of Pb(II), Cd(II), and Cu(II) was observed through adsorption or precipitation depending on pH. As(V) adsorption onto ICS occurred through an anionic-type and followed a Langmuir-type adsorption behaviour. In column experiments, pH was identified as an important parameter in the breakthrough of As(V). As(V) breakthrough at pH 4.5 was much slower than at pH 9 due to a strong chemical bonding between As(V) and ICS as similar with batch adsorption behaviour. With variation of ICS amounts, the optimum amount of ICS at pH 4.5 was identified as 5.0 grams in this research. At this condition, ICS could be used to treat 200 mg of As(V) with 1 kg of ICS until 50 ppb of As(V) appeared in the effluent. In this research, as a new treatment system, ICS can be potentially used to treat As(V) and cationic heavy metals.

Download Full-text

Core-Shell Molecularly Imprinted Polymer Nanocomposites for Biomedical and Environmental Applications

Current Pharmaceutical Design ◽

10.2174/1381612825666191009153259 ◽

2019 ◽

Vol 25 (34) ◽

pp. 3633-3644

Author(s):

Nasrullah Shah ◽

Saba Gul ◽

Mazhar Ul-Islam

Keyword(s):

Food Processing ◽

Selective Adsorption ◽

Environmental Applications ◽

Core Shell ◽

Template Molecule ◽

Hollow Core ◽

Imprinted Polymer ◽

Adsorption Selectivity ◽

Molecularly Imprinting Polymers ◽

Relative Adsorption

: Core-shell polymers represent a class of composite particles comprising of minimum two dissimilar constituents, one at the center known as a core which is occupied by the other called shell. Core-shell molecularly imprinting polymers (CSMIPs) are composites prepared via printing a template molecule (analyte) in the coreshell assembly followed by their elimination to provide the everlasting cavities specific to the template molecules. Various other types of CSMIPs with a partial shell, hollow-core and empty-shell are also prepared. Numerous methods have been reported for synthesizing the CSMIPs. CSMIPs composites could develop the ability to identify template molecules, increase the relative adsorption selectivity and offer higher adsorption capacity. Keen features are measured that permits these polymers to be utilized in numerous applications. It has been developed as a modern technique with the probability for an extensive range of uses in selective adsorption, biomedical fields, food processing, environmental applications, in utilizing the plant's extracts for further applications, and sensors. This review covers the approaches of developing the CSMIPs synthetic schemes, and their application with special emphasis on uses in the biomedical field, food care subjects, plant extracts analysis and in environmental studies.

Download Full-text

The formation and constitution of crystals of lead salts containing water-soluble colloid

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences ◽

10.1098/rsta.1935.0018 ◽

1935 ◽

Vol 235 (749) ◽

pp. 125-164 ◽

Cited By ~ 6

Keyword(s):

Selective Adsorption ◽

Water Soluble ◽

Lead Salts ◽

The Subject ◽

As If ◽

Saturated Solutions

The influence of small amounts of dissolved foreign substances on the growth of crystals from saturated solutions has been the subject of much investigation. Usually the added substances have been electrolytes. Dyestuffs have not been neglected, but with some few exceptions comparatively little attention has been given to the effect of non-ionized water-soluble electrolytes such as gelatine or dextrine. As a rule, the presence of the foreign substances is found to cause the crystals to assume a different habit. Whenever this occurs the absorption must have occurred on certain crystal-faces in preference to others, but, although the added material is active by virtue of its close attachment to such faces, it is rarely found to be incorporated into the solid to any great extent. The growing crystals appear to reject the impurity—thrusting it outwards as the growth advances. The action of water-soluble colloids on the halides and certain other salts of lead is exceptional in several ways. Although when such colloids are present in small concentrations one can generally observe a modification of habit, at higher concentrations there may be little selective adsorption, and the result may be a rounded crystal on which no plane faces at all can be distinguished, as if the forces by which atoms are attracted to the structure had been equalized in every direction.

Download Full-text