Ferrocene chromophores continue to inspire. Fine-tuning and switching of the second-order nonlinear optical response
Keywords: A; acceptor; Az+; azulenylium; BINOL; 1,1â²-bi-2-naphthol; BLA; bond length alternation; BODIPY; 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene; CNS; cyanostilbene; Cp; cyclopentadiene; CPCM; Cossi and Barone's conductor like polarisable continuum model; C