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

A near infrared luminescent MOFs thermometer (Nd 0.676 Yb 0.324 BTC) was prepared via a simple solvothermal method using Ln 3+ (Ln=Nd, Yb) ions and 1, 3, 5-benznenetricarboxylic acid (H 3 BTC), and characterized by PXRD, TGA, ICP, and photoluminescence (PL) spectrum. These results indicate that the Nd 0.676 Yb 0.324 BTC 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. [ABSTRACT FROM AUTHOR]