A new class of third-order nonlinear optical materials: laser pulse-duration dependant saturable absorption and nonlinear refraction in platinum(ii) diimine-dithiolate complexes

Pintus A.;Pilloni C.;Pippia G.;Podda E.;Carla Aragoni M.;Lippolis V.;Aloukos P.;Potamianos D.;Chazapis N.;Couris S.;Anyfantis G. C.;Slawin A. M. Z.;Woollins J. D.;Arca M.

2023-01-01

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Abstract

The third-order nonlinear optical (NLO) properties of a series of platinum diimine-dithiolate complexes [Pt(N^N)(S^S)] were investigated by means of Z-scan measurements, revealing second hyperpolarizability values up to 10−29 esu, saturable absorption properties, and nonlinear refractive behaviour, which were rationalized also by means of DFT calculations.