Structure and Luminescence Colour Change of Iridium(III) Bis-Terpyridine Complex Crystal Triggered by Water Sorption/Desorption

Key Points

• To investigate the impact of water sorption/desorption on the luminescent properties of an iridium complex.
• Utilized X-ray crystallography to analyze the crystal structure of [Ir(tpy)2]Br3·7H2O.
• Observed luminescence changes due to thermal cycling and water interactions.
• The complex displays a reversible color change from yellow to orange upon heating and cooling.
• Luminescent properties vary significantly with moisture levels, showcasing vapochromism.