An isotopically-enriched, boron-containing compound comprising two or more boron atoms and at least one fluorine atom, wherein at least one of the boron atoms contains a desired isotope of boron in a concentration or ratio greater than a natural abundance concentration or ratio thereof. The compound may have a chemical formula of B.sub.2F.sub.4. Synthesis methods for such compounds, and ion implantation methods using such compounds, are described, as well as storage and dispensing vessels in which the isotopically-enriched, boron-containing compound is advantageously contained for subsequent dispensing use.

An isotopically-enriched, boron-containing compound comprising two or more boron atoms and at least one fluorine atom, wherein at least one of the boron atoms contains a desired isotope of boron in a concentration or ratio greater than a natural abundance concentration or ratio thereof. The compound may have a chemical formula of B.sub.2F.sub.4. Synthesis methods for such compounds, and ion implantation methods using such compounds, are described, as well as storage and dispensing vessels in which the isotopically-enriched, boron-containing compound is advantageously contained for subsequent dispensing use.

Disclosed are novel organoborane compositions of Formula (I), (II) or (III), ##STR00001##
wherein R.sup.1, R.sup.2, R.sup.3, R, R, n, n, n, m, m, and m are defined hereinabove. Also disclosed is a method of using said compositions for electrolytic media in lithium rechargeable batteries, including lithium-ion or lithium-air rechargeable batteries. Also disclosed are compositions containing said Formula (I), (II) and (III) compounds with lithium salts, useful as electrolytic media or matrices.

Disclosed herein are a polymeric material comprising a plurality of polymeric nanosheets arranged in a layer-by-layer configuration to provide a two-dimensional microporous polymeric material, wherein each of the plurality of polymeric nanosheets is formed from a plurality of ladder-shaped polymers, the ladder-shaped polymers are formed from at least one multivalent monomeric material that has: two or more polymerisable functional groups selected from one or both of acetylene and vinyl functional groups; and a functional group capable of forming a halogen bond with a halogen atom, use of the polymeric material, and a method of manufacturing the polymeric material. Also disclosed herein is a method of adsorbing Li.sup.+ and/or B.sup.3+ ions from an aqueous solution comprising a mixture of ionic species.

Disclosed herein are a polymeric material comprising a plurality of polymeric nanosheets arranged in a layer-by-layer configuration to provide a two-dimensional microporous polymeric material, wherein each of the plurality of polymeric nanosheets is formed from a plurality of ladder-shaped polymers, the ladder-shaped polymers are formed from at least one multivalent monomeric material that has: two or more polymerisable functional groups selected from one or both of acetylene and vinyl functional groups; and a functional group capable of forming a halogen bond with a halogen atom, use of the polymeric material, and a method of manufacturing the polymeric material. Also disclosed herein is a method of adsorbing Li.sup.+ and/or B.sup.3+ ions from an aqueous solution comprising a mixture of ionic species.