Abstract: A metallized polymer having a backbone having an acetylenic repeat unit and —SiR2—(O—SiR2)n— and/or —SiR2—(O—SiR2)n-[Cb-SiR2—(O—SiR2)n]m—. At least one of the acetylenic repeat units contains a (MLx)y-acetylene complex. M is a metal, L is a ligand, x and y are positive integers, R is an organic group, Cb is a carborane, and n and m are greater than or equal to zero. A composition containing a siloxane polymer and a metallic compound. The siloxane polymer has a backbone having one or more acetylene groups and —SiR2—(O—SiR2)n— and/or —SiR2—(O—SiR2)n-[Cb-SiR2—(O—SiR2)n]m—. The metallic compound is capable of reacting with the acetylene group to form a (MLx)y-acetylene complex.

Abstract: A metallized thermoset containing a crosslinked metallized polymer having a backbone having an acetylenic repeat unit and —SiR2—(O—SiR2)n— and/or —SiR2—(O—SiR2)n-[Cb-SiR2—(O—SiR2)n]m—. At least one of the acetylenic repeat units contains a (MLx)y-acetylene complex. The metallized thermoset contains a crosslink between acetylene groups and/or a polycarbosiloxane crosslink. M is a metal, L is a ligand, x and y are positive integers, R is an organic group, Cb is a carborane, and n and m are greater than or equal to zero. A method of making a metallized thermoset by providing a metallized polymer and heating the metallized polymer. The metallized polymer contains the above backbone. Heating the metallized polymer forms crosslinks between acetylene groups and/or polycarbosiloxane crosslinks.

Abstract: A carborane-siloxane compound is provided having the repeat unit Q contains any of —SiR2—, —SiR2—O—, —C?C—C?C—, carboranyl, and U?. Each R and R? is alkyl, aryl, alkylaryl, haloalkyl, haloaryl, or mixtures thereof. Each U? is derivable from hydrosilation of an alkenyl or alkynyl group. Each T is alkyl, aryl, alkylaryl, haloalkyl, haloaryl, mixtures thereof, —(O—SiR?2)xH, or the repeat unit. Each x and x? is a positive integer. The compounds may be made be reacting a carborane-siloxane precursor having unsaturated end groups with a siloxane crosslinker in the presence of a hydrosilation catalyst.

Abstract: A carborane-siloxane compound is provided having the repeat unit Q contains any of —SiR2—, —SiR2—O—, —C?C—C?C—, carboranyl, and U?. Each R and R? is alkyl, aryl, alkylaryl, haloalkyl, haloaryl, or mixtures thereof. Each U? is derivable from hydrosilation of an alkenyl or alkynyl group. Each T is alkyl, aryl, alkylaryl, haloalkyl, haloaryl mixtures thereof, —(O—SiR?2)xH, or the repeat unit. Each x and x? is a positive integer. The compounds may be made be reacting a carborane-siloxane precursor having unsaturated end groups with a siloxane crosslinker in the presence of a hydrosilation catalyst.

Abstract: A metallized thermoset containing a crosslinked metallized polymer having a backbone having an acetylenic repeat unit and —SiR2—(O—SiR2)n— and/or —SiR2—(O—SiR2)n-[Cb-SiR2—(O—SiR2)n]m—. At least one of the acetylenic repeat units contains a (MLx)y-acetylene complex. The metallized thermoset contains a crosslink between acetylene groups and/or a polycarbosiloxane crosslink. M is a metal, L is a ligand, x and y are positive integers, R is an organic group, Cb is a carborane, and n and m are greater than or equal to zero. A method of making a metallized thermoset by providing a metallized polymer and heating the metallized polymer. The metallized polymer contains the above backbone. Heating the metallized polymer forms crosslinks between acetylene groups and/or polycarbosiloxane crosslinks.

Abstract: A metallized polymer having a backbone having an acetylenic repeat unit and —SiR2—(O—SiR2)n— and/or —SiR2—(O—SiR2)n-[Cb-SiR2—(O—SiR2)n]m—. At least one of the acetylenic repeat units contains a (MLx)y-acetylene complex. M is a metal, L is a ligand, x and y are positive integers, R is an organic group, Cb is a carborane, and n and m are greater than or equal to zero. A composition containing a siloxane polymer and a metallic compound. The siloxane polymer has a backbone having one or more acetylene groups and —SiR2—(O—SiR2)n— and/or —SiR2—(O—SiR2)n-[Cb-SiR2—(O—SiR2)n]m—. The metallic compound is capable of reacting with the acetylene group to form a (MLx)y-acetylene complex.

Abstract: A ceramic made by providing a composition and pyrolyzing the composition. The composition has siloxane polymer, metallic polymer, siloxane thermoset, and/or metallic thermoset having a backbone having: an acetylenic repeat unit; and —SiR2—(O—SiR2)n— and/or —SiR2—(O—SiR2)n-[Cb-SiR2—(O—SiR2)n]m. R is an organic group, Cb is a carborane, and n and m are integers greater than or equal to zero. Any crosslinking is a crosslink between acetylene groups and/or a polycarbosiloxane crosslink. The composition also has free metal atoms, metal clusters, or metal nanoparticles dispersed homogeneously throughout the composition; (MLx)y-acetylene complex in the backbone; and/or a metallic compound for forming a (MLx)y-acetylene complex. M is a metal, L is a ligand, x and y are positive integers.

Abstract: A carborane-siloxane compound is provided having the repeat unit Q contains any of —SiR2—, —SiR2—O—, —C?C—C?C—, carboranyl, and U?. Each R and R? is alkyl, aryl, alkylaryl, haloalkyl, haloaryl, or mixtures thereof. Each U? is derivable from hydrosilation of an alkenyl or alkynyl group. Each T is alkyl, aryl, alkylaryl, haloalkyl, haloaryl, mixtures thereof, —(O—SiR?2)xH, or the repeat unit. Each x and x? is a positive integer. The compounds may be made be reacting a carborane-siloxane precursor having unsaturated end groups with a siloxane crosslinker in the presence of a hydrosilation catalyst.

Abstract: A crosslinked polymer and process of making it are disclosed. A copolymer having at least one alkyne group, carborane group, and alkylsiloxane group is reacted with a siloxane crosslinker in a hydrosilation reaction. This produces a crosslinked polymer where the crosslink sites are reacted alkyne groups.