Abstract: A system for separating and concentrating ionic compounds in a sample is provided herein. In some embodiments, a system includes at least one sample separation device, a flexible holder having a plurality of slots, wherein each slot is configured to have a sample separation device inserted therein, wherein the at least one sample separation device is inserted into a slot of the flexible holder; and an electrode for applying a voltage to the device, wherein the at least one sample separation device comprises a separation portion, a first storage portion, and a second storage portion, wherein the first and second storage portions are positioned on opposing sides of the separation portion, wherein the separation portion is folded at a predetermined interval to form two or more discrete base units.

Abstract: The present specification relates to a composition including two or more compounds represented by Chemical Formula 1 and having a different number of deuterium substitution, wherein, in the composition, the number of deuterium of an isotope having a highest isotope content among each isotope content for each mass number of the two or more compounds having a different number of deuterium substitution is 13 or greater, and an electronic device and an organic light emitting device including the same.