Intensity and lifetime ratiometric luminescent thermometer based on a Tb(III) coordination polymer

Area of Science:

• Materials Science
• Inorganic Chemistry
• Solid-State Chemistry

Background:

• Coordination polymers offer tunable properties for advanced applications.
• Terbium(III) complexes are known for their characteristic luminescence.
• Developing sensitive and stable thermometers is crucial for various scientific fields.

Purpose of the Study:

• To synthesize and characterize a novel three-dimensional terbium(III) coordination polymer.
• To investigate the luminescent and thermometric properties of the synthesized material.
• To explore the magnetic behavior of the terbium(III) coordination polymer.

Main Methods:

• Hydrothermal synthesis of the terbium(III) coordination polymer.
• Solid-state photoluminescent spectroscopy for luminescence analysis.
• Variable-temperature magnetic susceptibility measurements for magnetic studies.

Main Results:

• A 3D terbium(III) coordination polymer, [Tb(bttb)_0.5(2,5-pzdc)_0.5] (1), was successfully synthesized.
• Compound 1 displays intense green luminescence (550 nm) with millisecond lifetimes.
• It functions as a ratiometric solid luminescent thermometer with a sensitivity of 0.76% K^-1 at 295 K.

Conclusions:

• The synthesized terbium(III) coordination polymer exhibits excellent luminescent and thermometric properties.
• This material is a promising candidate for solid-state luminescent thermometry in the physiological temperature range.
• The study also provides insights into the magnetic interactions within the coordination polymer.