A colorimetric sensor for detecting an analyte of interest that includes a metal layer disposed upon a substrate, a plurality of nanostructures, and a corresponding plurality of metal deposits spaced apart from the metal layer. The metal layer defines a plurality of holes, each nanostructure includes a first portion disposed within a respective hole, and each metal deposit is disposed upon a second portion of a respective nanostructure. The sensor also includes a molecularly imprinted polymer layer that may cover the metal layer, the nanostructures, and/or the metal deposits. The molecularly imprinted polymer layer defines a cavity shaped to receive the analyte of interest, and the sensor is configured such that, when an analyte contacts the molecularly imprinted polymer layer and becomes disposed within the cavity, an optical property of at least a portion of the sensor changes thereby to cause a detectable color change in and/or from the sensor.

Embodiments of templated polymeric materials capable of binding lysophosphatidic acids (LPAs) are disclosed. Methods of making and using the templated polymeric materials also are disclosed. The disclosed templated polymeric materials are molecularly imprinted polymers that bind LPAs and facilitate the production of lysophosphatidic acid-enriched samples, for instance through extraction of lysophosphatidic acids from biological samples, such as plasma or serum samples.

A method for preparing a hollow hydroxyl iron-manganese composite by employing a cubic structure template comprises: (1) preparation of a template: adding a certain mass of potassium permanganate to diluted hydrochloric acid, and dissolving and mixing evenly the same by magnetic stirring at room temperature; then adding polyvinylpyrrolidone thereto, and continuing to dissolve the same thoroughly by magnetic stirring; and finally adding a certain mass of potassium ferrocyanide and de-solubilizing the same for 10-60 minutes at room temperature, then transferring the above mixed solution into a sample bottle, and performing an isothermal reaction at 50-90 C. for 18-24 hours to obtain a blue-black deposit, namely a target iron-manganese composite template; and (2) preparation of a hollow iron-manganese composite: evenly dispersing the blue-black iron-manganese composite template obtained in the step (1) to a small amount of anhydrous ethanol, then adding a certain concentration of sodium hydroxide solution thereto, placing the same on a rotary shaker to react at room temperature for 6-12 hours, and then removing a supernatant liquid, so that a black substance remaining at a bottom of a centrifuge tube is a hollow hydroxyl iron-manganese composite having a cubic structure. Also provided are a hollow hydroxyl iron-manganese composite prepared by the above method, and an application thereof to adsorption and removal of heavy metal in water.

A zeolite having the framework structure of SSZ-31 is synthesized using 1-cyclohexylmethyl-1-ethylpiperidinium cations as a structure directing agent.

The present invention relates to a PST-20 zeolite having a novel skeletal structure, its preparation method, and a selective separation and adsorption method for a gas using the PST-20 zeolite. More specifically, the present invention relates to a method of preparing a microporous aluminosilicate PST-20 zeolite having a novel skeletal structure totally different from the skeletal structure of known zeolites and using the PST-20 zeolite as an adsorbent/separator capable of selectively adsorbing/separating carbon dioxide to separate and collect carbon dioxide with high purity from burned gases or natural gases.

Provided are a polyimide and/or polyamideimide porous body and method for manufacturing same, method for separation and/or adsorption using the porous body, a separation material, adsorption material, and filter media composed of the porous body, a laminate, and a filter device. A polyimide and/or polyamideimide porous body in which the polyimide and/or polyamideimide has at least one group selected from the group consisting of a carboxy group, a salt-type carboxy group, and a NH bond.

A colorimetric sensor for detecting an analyte of interest that includes a metal layer disposed upon a substrate, a plurality of nanostructures, and a corresponding plurality of metal deposits spaced apart from the metal layer. The metal layer defines a plurality of holes, each nanostructure includes a first portion disposed within a respective hole, and each metal deposit is disposed upon a second portion of a respective nanostructure. The sensor also includes a molecularly imprinted polymer layer that may cover the metal layer, the nanostructures, and/or the metal deposits. The molecularly imprinted polymer layer defines a cavity shaped to receive the analyte of interest, and the sensor is configured such that, when an analyte contacts the molecularly imprinted polymer layer and becomes disposed within the cavity, an optical property of at least a portion of the sensor changes thereby to cause a detectable color change in and/or from the sensor.

Crystalline molecular sieves and their synthesis using quaternary N-methyl-diisoalkylammonium cations as organic structure directing agents are disclosed. The structure directing agent has the following structure (1):

##STR00001##

in which R.sup.1 is selected from hydrogen, a methyl group, an ethyl group, a propyl group, and a hydroxymethyl group; and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from a methyl group, an ethyl group, and a propyl group.

Crystalline molecular sieves and their synthesis using quaternary N-methyl-diisoalkylammonium cations as organic structure directing agents are disclosed. The structure directing agent has the following structure (1): ##STR00001##
in which R.sup.1 is selected from hydrogen, a methyl group, an ethyl group, a propyl group, and a hydroxymethyl group; and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from a methyl group, an ethyl group, and a propyl group.

Embodiments provide a methane microporous carbon adsorbent including a thermally-treated CVD carbon having a shape in the form of a negative replica of a crystalline zeolite has a BET specific surface area, a micropore volume, a micropore to mesopore volume ratio, a stored methane value and a methane delivered value and a sequential carbon synthesis method for forming the methane microporous carbon adsorbent. Introducing an organic precursor gas for a chemical vapor deposition (CVD) period to a crystalline zeolite that is maintained at a CVD temperature forms the carbon-zeolite composite. Introducing a non-reactive gas for a thermal treatment period to the carbon-zeolite composite maintained at a thermal treatment temperature forms the thermally-treated carbon-zeolite composite. Introducing an aqueous strong mineral acid mixture to the thermally-treated carbon-zeolite composite forms the methane microporous carbon adsorbent.