Synthesis, structure and photophysical properties of a new zinc compound

Abstract

Under hydrothermal conditions, a new zinc compound, [Zn(2,2’-bpy)₃]₂S·16H₂O·2OH (1) (2,2’-bpy = 2,2’-bipyridine) was synthesized and structurally characterized by using a single-crystal X-ray diffraction method. This compound is characteristic of an isolated (0-D) structure. A solid-state photoluminescence experiment revealed that it shows blue emission, in combination with molecular orbital (MO) calculations, lead us to conclude that the emission originates from the ligand-to-metal charge-transfer (LMCT) transition. Complex 1 possesses CIE chromaticity coordinates of (0.0782, 0.1973). A solid-state UV/Vis diffuse reflectance spectrum measurement unveiled that this compound features a wide optical band gap of 2.03 eV.

Graphical Abstract

A new zinc compound with an isolated structure was reported. This compound exhibits blue photoluminescence, which is originated from the LMCT transition. It features CIE chromaticity coordinates of 0.0782 and 0.1973. This compound also has a wide optical band gap of 2.03 eV.

Keywords:

• Chromaticity coordinate
• 22’-bipyridine
• photoluminescence
• hydrothermal
• zinc

Additional information

Funding

I gratefully acknowledge the financial support of the open foundation of the State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (20180008).