Disilanylene-bridged BODIPY-based D–σ–A architectures: a novel promising series of NLO chromophores

Abstract

The synthesis and optical properties of a novel series of disilanylene-bridged BODIPY-based D–σ–A chromophores are reported. Si–Si σ-electrons are useful and impressible for tunable optical properties. The electron-donating group facilitates enhancement of the CT nature of the excited state through σ(Si–Si) orbital, leading to the remarkable two-photon absorption cross-sections.