Pyrene-and anthracene-appended new crown ether derivatives have been synthesized by
Schiff's base reaction, and cation complexation behavior was investigated by fluorescence …

Abstract New chiral diaza-18-crown-6 ether derivatives, 5 and 6 were synthesized from (R)-(-
)-2-amino-1-bütanol. These chiral artificial receptors exhibit pronounced chiral recognition …

Spin–lattice (T1) and spin–spin (T2) relaxation times of seven peaks in dibenzo diaza 18-
crown-6 ether derivative were measured at 300K with a Bruker 400MHz NMR spectrometer …

Spin-lattice relaxation times in one of dibenzo diaza 18-crown-6 ether derivative were
measured vs. increasing temperature. The relaxation times (ln T1) were fitted vs. l/T over a …

Measurement of spin-lattice relaxation time T1 has been performed for the chiral monoaza-
15-crown-5 ether derivative as a function of temperature. Activation energies Ea and …