POLYHETEROSILOXANE COMPOSITION

摘要

A polyheterosiloxane composition includes (A) a first metal (M1), (B) a second metal (M2), and (C) siloxy units having the formula (R1 3SiO1/2), (R1 2SiO2/2), (R1SiO3/2), and/or (SiO4/2). Each R1 is independently a hydrocarbon or halogenated hydrocarbon group including 1 to 30 carbon atoms. The mole fractions of (A), (B), and (C) relative to each other is of the formula [(M1)]a[(M2)]b[R1 3SiO1/2]m[R1 2SiO2/2]d[R1SiO3/2]t[SiO4/2]q, wherein a and b are each independently from 0.001 to 0.9, m, d, t, and q are each independently from zero to 0.9, m, d, t, and q cannot all be zero, and the sum of a+b+m+d+t+q≈1. At least one oxygen atom of the siloxy units is bonded to at least one of (M1) and/or (M2). The composition exhibits a quantum yield of at least 0.05% and at least one of (M1) and (M2) is a lanthanide metal.