Ratiometric near infrared luminescent thermometer based on lanthanide metal-organic frameworks

• A ratiometric near infrared luminescent MOFs thermometer (Nd0.676Yb0.324BTC) was prepared via a simple solvothermal method.
• The maximum relative sensitivity of Nd0.676Yb0.324BTC is determined to be 1.187% K−1 at 323 K.
• Nd0.676Yb0.324BTC showed excellent repeatability in the physiological temperature range (288–323 K).

A near infrared luminescent MOFs thermometer (Nd0.676Yb0.324BTC) was prepared via a simple solvothermal method using Ln3+ (Ln=Nd, Yb) ions and 1, 3, 5-benznenetricarboxylic acid (H3BTC), and characterized by PXRD, TGA, ICP, and photoluminescence (PL) spectrum. These results indicate that the Nd0.676Yb0.324BTC displays high relative sensitivity and excellent repeatability in the physiological temperature range (288–323 K), and the maximum relative sensitivity is determined to be 1.187% K−1 at 323 K. These NIR luminescent MOFs may have potential applications in physiological temperature sensing.

A near infrared luminescent MOFs thermometer (Nd0.054Yb0.946BTC ) displays high relative sensitivity and excellent repeatability in the physiological temperature range (288–323 K).Figure optionsDownload as PowerPoint slide