Disclosed are an organic thin film including a semiconducting polymer including a ligand that is metal-coordination bondable or is metal-coordination bonded and an elastomer including a ligand that is metal-coordination bondable or is metal-coordination bonded, wherein the semiconducting polymer and the elastomer are configured to be dynamic intermolecular bonded by a metal-coordination bond, an organic sensor, and an electronic device.

The present invention provides a cation exchange resin, and a cation exchange membrane and an electrolyte membrane for a fuel cell using the same. The cation exchange resin comprises a divalent hydrophobic unit; and a divalent hydrophilic unit having divalent hydrophilic groups which are repeated via carbon-carbon bond. The divalent hydrophilic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group, a divalent silicon-containing group, a divalent nitrogen-containing group, a divalent phosphorus-containing group, a divalent oxygen-containing group, a divalent sulfur-containing group, or carbon-carbon bond, and at least one of the aromatic rings having a cation exchange group; wherein the hydrophobic unit and the hydrophilic unit are bonded to each other via carbon-carbon bond.

The present application relates to a polymer containing at least one structural unit of a formula (I) and at least one further structural unit selected from structural units A, B and C. The present application further relates to the use of the polymer in an electronic device and to a process for preparing the polymer. The present application further relates to an electronic device comprising the polymer.

A process for purifying semiconducting single-walled carbon nanotubes (sc-SWCNTs) extracted with a conjugated polymer, the process comprising exchanging the conjugated polymer with an s-tetrazine based polymer in a processed sc-SWCNT dispersion that comprises the conjugated polymer associated with the sc-SWCNTs. The process can be used for production of thin film transistors and chemical sensors. In addition, disclosed herein is use of an s-tetrazine based polymer for purification of semiconducting single-walled carbon nanotubes (sc-SWCNTs).

Disclosed are compositions of electroactive polymers (EAPs) having improved performance stability. In the EAP compositions, a cross-linked polymer is deposited onto the surface of the EAP by vapor-deposition methods. Upon contact with an aqueous solution (e.g., an aqueous electrolyte solution), the vapor-deposited polymeric network becomes a hydrogel that encapsulates the EAPs. By modulating precursors and vapor deposition conditions, the mesh size of the resultant hydrogel coatings can be controlled to accommodate the key species that interact with the EAPs.

Embodiments of a nanohoop-functionalized polymer and methods of making and using the same are described herein. In particular embodiments, the polymer comprises one or more nanohoops that extend from the polymer backbone. Also described are polymerizable nanohoop monomer embodiments that can be used to make the polymer embodiments.

This disclosure relates generally to electrochromic polymers that include a plurality of -conjugated chromophores in spaced relation with one another, and a plurality of conjugation-break spacers (CBSs), where at least one CBS separates adjacent chromophores. The chromophores may be colored in the neutral state, and multicolored to transmissive in different oxidization states.

A process for purifying semiconducting single-walled carbon nanotubes (sc-SWCNTs) extracted with a conjugated polymer, the process comprising exchanging the conjugated polymer with an s-tetrazine based polymer in a processed sc-SWCNT dispersion that comprises the conjugated polymer associated with the sc-SWCNTs. The process can be used for production of thin film transistors and chemical sensors. In addition, disclosed herein is use of an s-tetrazine based polymer for purification of semiconducting single-walled carbon nanotubes (sc-SWCNTs).

A cation exchange resin having improved chemical properties and mechanical properties, and a cation exchange membrane and an electrolyte membrane for a fuel cell using the same are provided.

A cation exchange resin is used, the cation exchange resin comprising: a divalent hydrophobic unit; and a divalent hydrophilic unit having divalent hydrophilic groups which are repeated via carbon-carbon bond, the divalent hydrophilic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group, a divalent silicon-containing group, a divalent nitrogen-containing group, a divalent phosphorus-containing group, a divalent oxygen-containing group, a divalent sulfur-containing group, or carbon-carbon bond, at least one of the aromatic rings having a cation exchange group; wherein the hydrophobic unit and the hydrophilic unit are bonded to each other via carbon-carbon bond.

Embodiments described herein provide a precursor for synthesizing a number of molecules for use in organic photovoltaics. The precursor is diiodo-furopyran (DFP), such as dibromo-DFP (DBDFP), to be used to synthesize a number of different molecules for use in organic photovoltaics. DFP possesses numerous reactive sites that can be used to simultaneously modify the backbone structure (which can be used to tune electronic and crystalline properties) and the side-chains (affecting the solubility and the solubility of any subsequent copolymers). Each of the molecules has either a biisocoumarin or biisoquinoline core structure and can be easily varied to yield a different functional backbone or different substituents. The molecules can be used in copolymers or small molecules for use in OPVs.