New NLO Stilbene Derivatives Bearing Phosphonate Ester Electron-Withdrawing Groups
1997; Elsevier BV; Volume: 38; Issue: 35 Linguagem: Inglês
10.1016/s0040-4039(97)01390-7
ISSN1873-3581
AutoresKevin D. Belfield, Chandrasekhar Chinna, Katherine J. Schafer,
Tópico(s)Luminescence and Fluorescent Materials
ResumoThe synthesis and characterization of a new class of electron donor-acceptor substituted stilbenes bearing a phosphonate ester as the electron-withdrawing functionality is described. Phosphorylation of aromatic rings was accomplished using Ni-catalyzed Arbuzov reactions, while Pd-catalyzed Heck-type coupling reactions were employed to construct the stilbene derivatives. Through determination of an electro-optic coefficient (r33), it was demonstrated that the phosphonate ester group is effective as an electron-withdrawing group for stilbene-based second-order NLO materials. © 1997 Elsevier Science Ltd.
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