Strong optical limiting (OL) capability of the two-dimensional network cluster polymer [MoS4Cu6I4(py)4]n
Abstract
The two-dimensional network compound [MoS4Cu6I4(py)4]n is the first example of a cluster polymer showing very large optical limiting effects; its nonlinear absorptive index α2 and nonlinear refractive value n2 are 1.5 × 10–9 m W–1 and –2.5 × 10–17 m2 W–1, respectively, in 6.5 × 10–5 mol dm–3 DMSO solution; the optical limiting threshold was determined to be 0.6 J cm–2, which is about three times better than that of C60.