Abstract
In this work, Er3+/Tm3+ co-doped lanthanide metal-organic frameworks with uniform rod-like shape were obtained by one-step method, maintaining porous structure as well as upconversion characteristics under near-infrared excitation. The significant enhancement in upconversion emissions of Er3+ have been observed due to the Tm3+-mediated energy transfer pathways. By modulating the ratio of Er3+ to Tm3+, tuning upconversion luminescence from yellow to blue light were achieved. Efficient energy transfer from Er3+ to Tm3+ were demonstrated in metal-organic frameworks and the mechanism was discussed in detail. In addition, the Er/Tm-MOF was applied as an optical thermometer based on thermally coupled levels of Er3+, exhibiting high absolute and relative sensitivities. These results will pave an avenue to novel Ln-MOFs for color-tunable photoluminescence and optical sensors.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
