USE OF TITANIA PRECURSOR COMPOSITION PATTERN

摘要

A conductive metal pattern can be formed using a titania sol-gel obtained from a titania precursor composition having (a) a titanium alkoxide or titanium aryloxide, (b) a R(O)mCOCH2CO(O)nR′ compound wherein R and R′ are independently alkyl and m and n are independently 0 or 1, (c) water, (d) either an acid having a pKa less than 1 or a source of a halogen, and (e) a water-miscible organic solvent, on a substrate, wherein the molar amounts of (a) through (d) are sufficient to form a pattern of a titania sol-gel upon drying on the substrate. This pattern is contacted with electroless seed metal ions to form a pattern of electroless seed metal ions deposited within the pattern of titania sol-gel on the substrate, which electroless seed metal ions are exposed to electromagnetic radiation to reduce the electroless seed metal. The article is then subjected to electroless metal plating.

主权项

1. A method for forming a conductive metal pattern, comprising:
forming a pattern of a titania sol-gel formed from a titania precursor composition that comprises: (a) a titanium alkoxide or titanium aryloxide, (b) a R(O)mCOCH2CO(O)nR′ compound wherein R and R′ are independently alkyl having at least 1 carbon atom, and m and n are independently 0 or 1, (c) water, (d) either an acid having a pKa less than 1 or a source of a halogen, and (e) a water-miscible organic solvent, on a substrate, wherein the molar amounts of (a) through (d) are sufficient to form a pattern of a titania sol-gel upon drying on the substrate, contacting the pattern of titania sol-gel with electroless seed metal ions to form a pattern of electroless seed metal ions deposited within the pattern of titania sol-gel on the substrate, exposing the pattern of electroless seed metal ions to electromagnetic radiation to reduce the electroless seed metal ions, thereby forming a pattern of electroless seed metal nuclei within the pattern of titania sol-gel on the substrate, and electrolessly plating the pattern of electroless seed metal nuclei with a metal that is the same as or different from the electroless seed metal nuclei.