Patent ID: 7169477

Claim:
A composition for preparing a porous dielectric thin film which comprises: (1) a pore generating material of gemini detergent represented by the formula (8), quaternary alkyl ammonium salt represented by the formula (9) or mixture thereof; (2) thermo-stable organic or inorganic matrix precursor; and (3) a solvent for dissolving both the said material and/or salt and the matrix precursor: wherein R 1 and R 2 are independently a methyl group or a ethyl group; R 3 is a C 5˜40 alkyl group; X is a halogen atom; r is independently a hydrogen atom, a methyl group or a C 1˜10 alkoxy group; j is 0 or 1; n is an integer from 1 to 12, and m is an integer from 0 to 10, and NL 1 L 2 L 3 L 4 X (9) wherein N is a nitrogen atom; X is a halogen atom; and L 1 , L 2 , L 3 , and L 4 are independently a C 1˜30 alkyl group.