Belén Villacampa

TL;DR: Novel pi-conjugated donor-acceptor chromophores, based on the strong electron-donating tetrathiafulvalene moiety and different electron-withdrawing acceptors, exhibit large second-order optical nonlinearities.

TL;DR: The second-order nonlinear optical properties of a series of 1,3-dithiole-based electron donor-acceptor systems incorporating proaromatic donor and spacer groups are described, finding that compounds with a p-benzoquinoid spacer and a strong acceptor group show negative mubeta values and yet they are largely quinoid, as evidenced by crystallographic data and theoretical calculations.

TL;DR: Merocyanines where a polyenic spacer separates a 4H-pyran-4-ylidene moiety and different strong organic acceptors have been synthesized with weakly alternated structures and remarkably zwitterionic ground states, with a partial aromatic character that is compared to those of other pyran derivatives.

TL;DR: In this article, the design, synthesis and nonlinear optical response of some bent compounds, at both the molecular and macroscopic level, are reported based on a bent-core NLO-phore with a μβ0 in the range of 390 × 10−48 esu (1907 nm) for second harmonic generation at excitation wavelengths of 1064 and 1600 nm in a mesogenic material with a SmCP mesophase.

TL;DR: In this paper, the second order NLO properties of push-pull TTF derivatives have been studied for the first time and the effect of modifying both the acceptor and the donor moieties on the μβ values has been studied by experimental (EFISH) and theoretical techniques.