Europium(iii)/terbium(iii) mixed metal–organic frameworks and their application as ratiometric thermometers with tuneable sensitivity in organic dispersion

Unprecedented insight into the lanthanide dispersion in mixed-metal Eu x Tb 1− x BTC using high-field 1 H MAS NMR spectroscopy. Isolation of Eu sites in the TbBTC matrix leads to efficient Tb-to-Eu energy transfer and high temperature sensitivity near RT.