3',4'-Dideoxy-3'-eno-ribostamycin

Yb3+/Er3+/Tm3+- and Yb3+/Er3+/Tm3+/Ho3+-dopedα-NiMoO4nanoparticles were synthesized using a microwave hydrothermal method and studied for white-light emission under 980 nm laser diode excitation. White upconversion (UC) light was successfully obtained with the appropriate control of blue, green, and red emissions by successfully tuning the Er3+and Ho3+concentrations in Yb3+/Er3+/Tm3+- and Yb3+/Er3+/Tm3+/Ho3+-dopedα-NiMoO4, respectively. In addition, the white color emission was shown by the CIE chromaticity coordinates of samples. The energy transfer mechanisms are explained in detail based on the emission spectra and pump power density-dependent UC luminescence intensity in rare earth (Yb3+/Er3+/Tm3+and Yb3+/Er3+/Tm3+/Ho3+)-dopedα-NiMoO4nanoparticles. The results indicate that Yb3+/Er3+/Tm3+- and Yb3+/Er3+/Tm3+/Ho3+-dopedα-NiMoO4nanoparticles can be good candidates for white-light devices.

In the mol-ecule of the title compound, C(18)H(19)N(3)O(3), the triazole ring is oriented with respect to the 3-methoxy-phenyl and 2-methoxy-phenyl rings at dihedral angles of 11.79 (3) and 89.22 (3)°, respectively. The dihedral angle between the two benzene rings is 85.95 (3)°. In the crystal structure, inter-molecular O-H⋯N and C-H⋯O hydrogen bonds link the mol-ecules. There is a π-π contact between the triazole and 3-methoxy-phenyl rings [centroid-centroid distance = 3.916 (3) Å]. There is a π-π contact between the triazole and one of the 3-methoxy-phenyl rings [centroid-centroid distance = 3.916 (3) Å ]. C-H⋯π contacts are also found between the benzene ring and the methyl groups of their 3-methoxy-substituents.