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).