An atmospheric water harvesting material includes a deliquescent salt, a photothermal agent, and a polymeric hydrogel matrix containing the deliquescent salt and photothermal agent.

The present specification relates to compositions, devices, apparatus, methods, kits and systems for sample preparation (e.g., separation, reduction or removal of small molecules from biomolecules in a sample). Exemplary small molecules that can be separated, reduced or removed have a molecular weight range of <2000 Da. and may include, but are not limited to, dyes, biotin, affinity tags, crosslinkers, reducing agents, labels, nanoparticles, radioactive ligands, mass tags, unreacted molecules and combinations, intermediates and derivatives of the foregoing. Exemplary biomolecules present in a sample, include but are not limited to, proteins, glycoproteins, antibodies, peptides, nucleic acids, polysaccharides, carbohydrates and lipids. Methods, compositions, kits, devices, apparatus and systems of the disclosure may advantageously provide superior separation of small molecule contaminants and additionally reduce time and expenses related to separation of small molecules from larger biomolecules in samples. Biomolecules separated as set forth herein are amenable to better downstream processing.

A method of binding a target metal in solution. The method of binding a target metal comprises contacting a solution containing i) a target metal with ii) an encapsulated exudate of a culture of algal flagellate, or a fraction thereof; or an encapsulated dried Euglena biomass or a fraction thereof, to form a complex between the target metal, and the encapsulated exudate or fraction thereof, or the encapsulated dried Euglena biomass or the fraction thereof; and optionally separating the complex from the solution. The disclosure also relates to a biosorbent element, as well as methods of using same in binding a metal in solution.

Disclosed herein are peptoids and related compounds, including peptoid affinity ligands for binding and/or purifying immunoglobulins, immunoglobulin fragments or immunoglobulin fusion proteins thereof. Methods of making peptoid affinity ligands and using the same to bind, purify and/or isolate immunoglobulins and related compounds are also disclosed. Such peptoid affinity ligands comprise a peptoid compound consisting of sequentially coupled peptoid residues forming a peptoid backbone, with one or more functional groups appended to a nitrogen of the peptoid residues of the peptoid backbone configured to provide the desired binding affinity.

The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group. In some examples, the present disclosure can include a chromatographic system having a chromatographic column having a stationary phase with a chromatographic substrate containing silica, metal oxide, an inorganic-organic hybrid material, a group of block copolymers, or a combination thereof.

Metal organic resins, composite materials composed of the metal organic resins, and anion exchange columns packed with the composite materials are provided. Also provided are methods of using the composite materials to remove metal anions from a sample, methods of using the metal organic resins as fluorescence sensors for detecting metal anions in a sample, and methods of making the metal organic resins and the composite materials. The metal organic resins are amine-functionalized metal organic frameworks and their associated counter anions. The composite materials are composed of metal organic resin particles coated with organic polymers, such as alginic acid polymers.

Open tubular capillary columns for liquid and ion chromatography, based upon an ionically impermeable polyolefin capillary having a bore with a sulfonate-group- or amine-group-functionalized internal surface. The capillary columns may include a coating of ion exchanging nanoparticles electrostatically bound to the functionalized internal surface. The capillary columns may be made by exposing the interior surface to a sulfonating reagent comprising chlorosulfonic acid (CISO.sub.3H), preferably from 85 wt % to 95 wt % chlorosulfonic acid at a process temperature of 20 to 25 C. The interior surface may be subsequently exposed to an asymmetrical diamine to form a sulfonic mid-linkage to the diamine, i.e., to form a sulfonamide-linked, amine-group-functionalized internal surface. The coating may be provided by subsequently exposing the interior surface to an aqueous suspension of ion exchanging nanoparticles to electrostatically bond the ion exchanging nanoparticles to the functionalized internal surface.

Provided is an affinity chromatography carrier having an excellent purification purity, including a substrate, a hydrophilic polymer, and an affinity ligand, in which the substrate is constituted of at least one selected from the group consisting of a polysaccharide, an acrylate-based polymer, a methacrylate-based polymer and a styrene-based polymer, the hydrophilic polymer is at least one selected from the group consisting of hydrophilic polysaccharides, the affinity ligand is at least one selected from the group consisting of an antibody-binding protein and an antibody-binding polypeptide, a carboxy group is introduced into the affinity chromatography carrier, and the amount of the carboxy group introduced is 15 mmol/L-gel to 60 mmol/L-gel in terms of ion exchange capacity.

A rapidly curable liquid gel for collecting an analyte from a sampling surface includes a polymer precursor mixture including a monomer and/or an oligomer; and an additive to enhance extraction of the analyte from the sampling surface. A kit for collecting an analyte from a sampling surface may include the rapidly curable liquid gel and a portable device for rapidly curing the gel. The rapidly curable liquid gel is cured to thereby form a peelable sampling film, and the sampling film is removed from the sampling surface, thereby collecting the analyte. In one embodiment, the rapidly curable liquid gel is UV-curable, the polymer precursor mixture further includes a photoinitiator compound, and the portable device includes a UV light source configured to emit UV light of a wavelength range absorbed by the photoinitiator compound.

Contaminate-sequestering coatings including a network of hydrolyzed silane compounds including a plurality of thiol functional groups, a plurality of fluorinated functionalities, or both are provided. The contaminate-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species or any combination thereof. Methods of functionalizing a substrate surface with contaminate-sequestering functionalities that sequester one or more PFAS, heavy metals, or both are also provided. Methods of removing contaminants from contaminate-containing liquids, and devices including the contaminate-sequestering coatings are also provided.