Synthesis, structure, and optical properties of 1,4-dithiafulvene-based nonlinear optic-phores.
Polyenic nonlinear optic (NLO)-phores with a proaromatic 1,4-dithiafulvene electron donor and the little explored 1,1,3-tricyano-2-phenylpropene acceptor have been synthesized. Their configurational and conformational features, ground state polarization, and linear and nonlinear optical properties have been determined experimentally and theoretically, and the results are compared to those of tetrathiafulvalene-related derivatives. The newly prepared compounds show close to optimal bond length alternation values for maximizing the first molecular hyperpolarizability, and one of them displays the highest mu beta0 value ever reported for a dithiafulvene-based NLO-phore. The first example of a dithiafulvenylmethylene transfer reaction is also reported.
Alías
Silvia
S
Departamento de Química OrgAnica, ICMA, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain.
Andreu
Raquel
R
Blesa
María Jesús
MJ
Franco
Santiago
S
Garín
Javier
J
Gragera
Aurora
A
Orduna
Jesús
J
Romero
Pilar
P
Villacampa
Belén
B
Allain
Magali
M