AI Article Synopsis
- This study explores how size affects the design of chromophores used in nonlinear optics, focusing on directly linked donor-acceptor dyads without the traditional π-conjugated linker.
- The research shows that these size-economical chromophores exhibit a higher first hyperpolarizability compared to larger, conventional Fc-based donor-π-acceptor chromophores.
- It argues that larger linkers can hinder electronic communication between the donor and acceptor, ultimately reducing the effectiveness of intramolecular charge transfer in these materials.
Article Abstract
The question of size economy in the design of chromophores for nonlinear optics is addressed in this investigation. We have synthesized directly linked donor-acceptor dyads, which lack a π-conjugated linker, the presence of which is usually considered obligatory in materials designed for nonlinear optics. Correlating linear optical data, electrochemical data, computational data and hyper Rayleigh scattering (HRS) data on ferrocene (Fc) based dyads, we demonstrate that the first hyperpolarizability of such size economical chromophores is significantly better compared to that of Fc based, traditional, larger, donor-π-acceptor chromophores. Arguably, a larger π-conjugated linker decreases the electronic communication between the donor and the acceptor and weakens the intramolecular charge transfer in such chromophores.
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| http://dx.doi.org/10.1039/d3dt01897k | DOI Listing |
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