Donor-substituted triaryl-1,3,5-triazinanes-2,4,6-triones: octupolar NLO-phores with a remarkable transparency–nonlinearity trade-off
作者:Gilles Argouarch、Romain Veillard、Thierry Roisnel、Anissa Amar、Abdou Boucekkine、Anu Singh、Isabelle Ledoux、Frédéric Paul
DOI:10.1039/c1nj20442d
日期:——
We report in this letter the measurement of the hyperpolarizabilities of a series of donor-substituted triaryl-1,3,5-triazinanes-2,4,6-triones by hyper Rayleigh scattering (HRS). A remarkable transparencyânonlinearity trade-off is evidenced for these octupolar NLO-phores which might be accessed in a straightforward synthetic way and in a few steps from commercial isocyanates.
An Electron-Rich Proazaphosphatrane for Isocyanate Trimerization to Isocyanurates
作者:Steven M. Raders、John G. Verkade
DOI:10.1021/jo9023396
日期:2010.8.6
synthesis of the new electron-rich, sterically hindered proazaphosphatrane shown above is described herein. This proazaphosphatrane catalyzes the cyclotrimerization of a wide variety of isocyanates to isocyanurates under mild conditions with unprecedentedly fast reaction times, giving moderate to high product yields. It is also shown that this proazaphosphatrane can be recycled up to 5 times.
Triaryl-1,3,5-triazinane-2,4,6-triones (Isocyanurates) Peripherally Functionalized by Donor Groups: Synthesis and Study of Their Linear and Nonlinear Optical Properties
The linearoptical (LO) and nonlinearoptical (NLO) properties of a series of isocyanuratesfunctionalized by donor arms at the periphery are reported herein. These octupolar derivatives were obtained in a straightforward way from commercial isocyanate derivatives and were fully characterized. Although several of these compounds are known, those that exhibited the largest NLO activities are all new