Abstract: Provided herein are various metallopolymers and methods of making the same.

Abstract: An aptamer-N-heterocyclic-carbene metal complex conjugate (aptamer-NHCM conjugate) or an aptamer-bis-N-heterocyclic-carbene metal complex conjugate (aptamer-bis-NHCM conjugate) includes an aptamer coupled through a hydrolytically stable bond to an N-heterocyclic-carbene metal complex (NHCM) or a bis-N-heterocyclic-carbene metal complex (bis-NHCM). The aptamer-NHCM conjugate is prepared where the chosen aptamer displays selective binding to a cell specific receptor, such that the cytotoxic NHCM can be directed specifically to cells responsible for a target disease (e.g., a specific cancer type). A method of preparing the aptamer-N-heterocyclic-carbene metal complex conjugate involves installing a coupling group to an N-heterocyclic-carbene metal complex that can specifically bond with a functional group on an aptamer; the bond, covalent or non-covalent, is stable hydrolytically in the absence of an environment that promotes intentional cleavage of the bond.

Abstract: The disclosure provides a method of preparing a functionalized cyclic polymer the method including reacting a metal-alkylidyne compound, metallacycloalkylene compound, or metallacyclopentadiene compound with a plurality of alkynes to form the functionalized cyclic polymer, wherein at least one alkyne comprises a functional group capable of further reacting to form a modified polymer. Also provided is a stereoregular functionalized cyclic polymer prepared by the method of the disclosure.

Abstract: Macrocyclic polyalkene homopolymers and copolymers can be formed and converted to macrocyclic polyalkanes or macrocyclic poly(alkane-co-alkene) upon hydrogenation or, when the macrocyclic polyalkene is reacted with an alkene in the presence of an olefin metathesis catalyst, to a macrocyclic poly(alkane-co-alkene) comprising vicinal —C(?CR2)—'s. Upon hydrogenation of a macrocyclic poly(alkane-co-alkene) comprising vicinal —C(?CR2)-'s, macrocyclic poly(alkane)s or poly(alkane-co-alkene)s with isolated —C(?CR2)- groups can be provided, depending on the degree of hydrogenation. The poly(alkane-co-alkene)s with isolated —C(?CR2)- units can be used to form poly(macrocyclic poly(alkane-co-alkene))s, poly(macrocyclic poly(alkane))s, and/or bi-, tri-, and/or multi-macrocyclic poly(alkane-co-alkene)s or bi-, tri-, and/or multi-macrocyclic poly(alkane)s.

Abstract: A tetraanionic OCO pincer ligand metal-oxo-alkylidene complex is prepared from a trianionic pincer ligand supported metal-alkylidyne. The metal can be tungsten or other group 5-7 transition metal. The tetraanionic pincer ligand metal-oxo-alkylidene complex, a trianionic OCO pincer ligand metal complex, or a trianionic ONO pincer ligand metal complex can be used to polymerize cycloalkenes. The poly(cycloalkene)s are predominantly cis-alkene macrocyclics.

Abstract: Provided herein are compounds that can be used as a catalyst to form cyclic polymers, methods of making and using the same.

Abstract: Disclosed are saturated cyclic monopolymers derived from hexyne, octyne, nonyne, pentadecyne and saturated cyclic copolymers derived from acetylene and a second alkyne monomer that is hexyne, octyne, nonyne, or pentadecyne.

Abstract: Provided herein are trans-cyclic polyacetylenes and methods of preparing the trans-cyclic polyacetylenes.

Abstract: Disclosed herein are methods for removing acetylene from an ethylene gas stream wherein a catalyst reacts with the acetylene to polymerize said acetylene forming an ethylene gas stream substantially free of acetylene.

Abstract: A tetraanionic OCO pincer ligand metal-oxo-alkylidene complex is prepared from a trianionic pincer ligand supported metal-alkylidyne. The metal can be tungsten or other group 5-7 transition metal. The tetraanionic pincer ligand metal-oxo-alkylidene complex, a trianionic OCO pincer ligand metal complex, or a trianionic ONO pincer ligand metal complex can be used to polymerize cycloalkenes. The poly(cycloalkene)s are predominantly cis-alkene macrocyclics.

Abstract: Provided herein are catalysts for polymerization of alkenes to cyclic poly(alkenes), and methods of making and using the same.

Abstract: Provided herein are complexes for polymerization of linear alkynes to cyclic poly(alkynes), and methods of making and using same.

Abstract: The disclosure provides a method of preparing a functionalized cyclic polymer the method including reacting a metal-alkylidyne compound, metallacycloalkylene compound, or metallacyclopentadiene compound with a plurality of alkynes to form the functionalized cyclic polymer, wherein at least one alkyne comprises a functional group capable of further reacting to form a modified polymer. Also provided is a stereoregular functionalized cyclic polymer prepared by the method of the disclosure.

Abstract: Disclosed are to metallocyclopropene complexes, methods of making same, methods for ring expansion metathesis polymerization, and polymers prepared by the methods for ring expansion metathesis polymerization.

Abstract: A tetraanionic OCO pincer ligand metal-oxo-alkylidene complex is prepared from a trianionic pincer ligand supported metal-alkylidyne. The metal can be tungsten or other group 5-7 transition metal. The tetraanionic pincer ligand metal-oxo-alkylidene complex, a trianionic OCO pincer ligand metal complex, or a trianionic ONO pincer ligand metal complex can be used to polymerize cycloalkenes. The poly(cycloalkene)s are predominantly cis-alkene macrocyclics.

Abstract: Disclosed are saturated cyclic monopolymers derived from hexyne, octyne, nonyne, pentadecyne and saturated cyclic copolymers derived from acetylene and a second alkyne monomer that is hexyne, octyne, nonyne, or pentadecyne.

Abstract: Disclosed are saturated cyclic monopolymers derived from hexyne, octyne, nonyne, pentadecyne and saturated cyclic copolymers derived from acetylene and a second alkyne monomer that is hexyne, octyne, nonyne, or pentadecyne.

Abstract: Disclosed herein are methods for removing acetylene from an ethylene gas stream wherein a catalyst reacts with the acetylene to polymerize said acetylene forming an ethylene gas stream substantially free of acetylene.

Abstract: An aptamer-N-heterocyclic-carbene metal complex conjugate (aptamer-NHCM conjugate) or an aptamer-bis-N-heterocyclic-carbene metal complex conjugate (aptamer-bis-NHCM conjugate) includes an aptamer coupled through a hydrolytically stable bond to an N-heterocyclic-carbene metal complex (NHCM) or a bis-N-heterocyclic-carbene metal complex (bis-NHCM). The aptamer-NHCM conjugate is prepared where the chosen aptamer displays selective binding to a cell specific receptor, such that the cytotoxic NHCM can be directed specifically to cells responsible for a target disease (e.g., a specific cancer type). A method of preparing the aptamer-N-heterocyclic-carbene metal complex conjugate involves installing a coupling group to an N-heterocyclic-carbene metal complex that can specifically bond with a functional group on an aptamer; the bond, covalent or non-covalent, is stable hydrolytically in the absence of an environment that promotes intentional cleavage of the bond.

Abstract: Disclosed are to metallocyclopropene complexes, methods of making same, methods for ring expansion metathesis polymerization, and polymers prepared by the methods for ring expansion metathesis polymerization.