Abstract: Water electrolysis systems that operate at intermediate temperature (i.e., between about 100° C. and about 300° C.) are described. At least some aspects of the present disclosure relate to proton exchange membrane steam electrolysis (PEMSE) systems including a polymer electrolyte comprising at least one phosphorus atom. In at some examples, the polymer electrolyte my comprise phosphonic acid.

Abstract: Disclosed herein are electrolytes comprising a cationic-functionalized polymer and a polyacid dopant. Also disclosed herein are methods of making and using the disclosed doped polymer electrolytes.

Abstract: Water electrolysis systems that operate at intermediate temperature (i.e., between about 100° C. and about 300° C.) are described. At least some aspects of the present disclosure relate to proton exchange membrane steam electrolysis (PEMSE) systems including a polymer electrolyte comprising at least one phosphorous atom. In at least some examples, the polymer electrolyte my comprise phosphonic acid.

Abstract: Disclosed is a self-healing polysilsesquioxane and a hybrid film using the same. Once crosslinked, the polysilsesquioxane copolymer can self-heal within several minutes at 100-120° C. The self-healing polysilsesquioxane copolymer can be prepared into a hybrid material in the form of a film. Because the hybrid film has an excellent ability of self-healing the damage caused by external impact, it is applicable to wide applications such as gas separation membranes, etc., without limitation.

Abstract: Disclosed is a self-healing polysilsesquioxane and a hybrid film using the same. Once crosslinked, the polysilsesquioxane copolymer can self-heal within several minutes at 100-120° C. The self-healing polysilsesquioxane copolymer can be prepared into a hybrid material in the form of a film. Because the hybrid film has an excellent ability of self-healing the damage caused by external impact, it is applicable to wide applications such as gas separation membranes, etc., without limitation.

Abstract: Provided is a composition for use in fabricating a carbon molecular sieve membrane, including a fluorine-containing polymer matrix and polysilsesquioxane. The composition shows high selectivity to the gas to be separated and high separation quality by controlling the mixing ratio of the fluorine-containing polymer matrix with polysilsesquioxane as well as the type of fluorine-containing polymer matrix and polysilsesquioxane. Ancillary selective pore formation is enhanced by a so-called “autogenous fluorinated gas induced siloxane etching” (A-FISE) mechanism of fluorine-containing polymer/polysilsesquioxane blend precursors during carbonization. Therefore, it is possible to effectively separate gases having a small difference in particle size, which, otherwise, are difficult to be separated with the conventional polymer membranes.

Abstract: The present disclosure provides a gas separation membrane using a ladder-structured polysilsesquioxane in which organic functional groups are attached to a long siloxane chain and a method for fabricating the same. In accordance with the present disclosure, a free-standing ladder-structured polysilsesquioxane-based membrane with various functional groups can be fabricated for gas separations. The performance of the gas separation membrane can be controlled through a variety of combinations of the organic functional groups linked to the siloxane chain. In addition, by controlling the molecular structure of the gas separation membrane through mixing of the ladder-structured polysilsesquioxane with an amine compound or conventional glassy or rubbery polymers or through thermal/UV-curing, the permeability and selectivity of the gas separation membrane can be controlled selectively.

Abstract: Provided is a composition for use in fabricating a carbon molecular sieve membrane, including a fluorine-containing polymer matrix and polysilsesquioxane. The composition shows high selectivity to the gas to be separated and high separation quality by controlling the mixing ratio of the fluorine-containing polymer matrix with polysilsesquioxane as well as the type of fluorine-containing polymer matrix and polysilsesquioxane. Ancillary selective pore formation is enhanced by a so-called “autogenous fluorinated gas induced siloxane etching” (A-FISE) mechanism of fluorine-containing polymer/polysilsesquioxane blend precursors during carbonization. Therefore, it is possible to effectively separate gases having a small difference in particle size, which, otherwise, are difficult to be separated with the conventional polymer membranes.

Abstract: The present invention relates to a coating composition having excellent wavelength conversion efficiency and a wavelength converting thin film/sheet prepared using the same. The coating composition of the present disclosure includes 1 to 60 wt % of polyorgano-silsesquioxane, 0.0001 to 30.0 wt % of a wavelength converting agent, and a solvent, and exhibits a transmittance of 70% or more as compared to that of an aqueous solution. A wavelength converting thin film/sheet prepared by using the coating composition has not only excellent photoluminescence, thermal resistance, and light-fastness, but also moisture and oxygen permeability is low, and the visible light transmittance thereof is 70% or more as compared to that of the air, and when patterning is added, the photoluminescence intensity of sheet is at least two-fold higher than that of a non-patterned sheet.

Abstract: Provided is a mercapto-based polysilsesquioxane having a thiol group (—SH) introduced to at least one side chain of polysilsesquioxane, represented by the following Chemical Formula 1 (In Chemical Formula 1, each of R1, R2 and R3 is independently selected from the group consisting of a thiol aromatic group, thiol aliphatic group and organic functional group, wherein at least one of R1, R2 and R3 is a thiol aromatic group or thiol aliphatic group, and n is an integer of 1-10,000).

Abstract: The present invention relates to a coating composition having excellent wavelength conversion efficiency and a wavelength converting thin film/sheet prepared using the same. The coating composition of the present disclosure includes 1 to 60 wt % of polyorgano-silsesquioxane, 0.0001 to 30.0 wt % of a wavelength converting agent, and a solvent, and exhibits a transmittance of 70% or more as compared to that of an aqueous solution. A wavelength converting thin film/sheet prepared by using the coating composition has not only excellent photoluminescence, thermal resistance, and light-fastness, but also moisture and oxygen permeability is low, and the visible light transmittance thereof is 70% or more as compared to that of the air, and when patterning is added, the photoluminescence intensity of sheet is at least two-fold higher than that of a non-patterned sheet.

Abstract: The present disclosure provides a gas separation membrane using a ladder-structured polysilsesquioxane in which organic functional groups are attached to a long siloxane chain and a method for fabricating the same. In accordance with the present disclosure, a free-standing ladder-structured polysilsesquioxane-based membrane with various functional groups can be fabricated for gas separations. The performance of the gas separation membrane can be controlled through a variety of combinations of the organic functional groups linked to the siloxane chain. In addition, by controlling the molecular structure of the gas separation membrane through mixing of the ladder-structured polysilsesquioxane with an amine compound or conventional glassy or rubbery polymers or through thermal/UV-curing, the permeability and selectivity of the gas separation membrane can be controlled selectively.

Abstract: Provided is a mercapto-based polysilsesquioxane having a thiol group (—SH) introduced to at least one side chain of polysilsesquioxane, represented by the following Chemical Formula 1 (In Chemical Formula 1, each of R1, R2 and R3 is independently selected from the group consisting of a thiol aromatic group, thiol aliphatic group and organic functional group, wherein at least one of R1, R2 and R3 is a thiol aromatic group or thiol aliphatic group, and n is an integer of 1-10,000).