Encapsulating Rhodamine B in the NbO-type metal-organic framework to construct dual-emitting ratiometric thermometer

Design and application of dual-emission metal–organic framework-based ratiometric fluorescence sensors

“…83 (B) Schematic of the preparation of RhB@MOF composites and temperature-ratiometric fluorescence sensing. 84 (C) Schematic diagram for the preparation of a CdSe/Eu-BTC composite material and the ratiometric fluorescence sensing of temperature. 85 (D) Schematic of Dy-MOF-based multimodal ratiometric fluorescence temperature sensing.…”

“…The fluorescence intensity ratio of the organic linker 5,5′-naphthalene-1,4-diyl-diisophthalic acid (H 4 NDPA) to RhB showed a good linear relationship with temperature in the range of 30–90 °C, and the maximum relative temperature sensitivity was 0.42% °C −1 at 30 °C. 84 Sun et al synthesized a dual-emission fluorescent probe CdSe QDs/Eu-BTC by embedding green fluorescent CdSe QDs onto the surface of a red-emitting europium metal–organic framework (Eu-BTC) (Fig. 8C), which was further encapsulated into a hydrophobic film as a temperature-responsive material.…”

Luminescence Thermometry Beyond the Biological Realm

“…To circumvent the challenges associated with thermometry based on absolute fluorescence intensity, a common strategy is to use a ratiometric signal based on the emission intensities of two dyes with different temperature sensitivities. − A similar approach has been used to create a ratiometric thermometer based on two fluorescent proteins with different temperature sensitivities . Ratiometric thermometry methods can also be developed for organic molecules by linking multiple emitting species via a MOF or a polymer matrix. ,− …”

Ratiometric dual-emitting thermometers based on rhodamine B dye-incorporated (nano) curcumin periodic mesoporous organosilicas for bioapplications

“…These ratiometric dual-emitting MOF@dye systems present an adaptable operational range and enhanced sensitivity, rendering them suitable for a spectrum of temperature sensing applications. 5,[15][16][17] It's noteworthy to clarify that within this approach, the MOFs can serve as a host material contributing to one of the emission peaks, 18 or alternatively, two distinct dyes can be embedded within a nonluminescent material. 15 Despite these advantages, MOFs face challenges such as inherent instability and complexities in scalable production.…”