Dual-ratiometric thermometry of Erbium(Ⅲ) in electrospun fibers inlaid with BaMgF4 microcrystals

Gao, Zelin; Li, Ying Zhen; Pun, Edwin Yue‐Bun; Lin, Hai

doi:10.1016/j.dyepig.2021.109645

“…[4] For example, dual ratiometric sensors have exhibited outstanding performance in investigating tumor hypoxia, [5] microenvironmental pH, [6] polarity, [4c] and trace concentration of polycyclic aromatic hydrocarbons. [7] However, dual ratiometric thermometers are limited to rare-earth materials, [8] which are expensive and detrimental to biological applications.…”

Section: Introductionmentioning

confidence: 99%

Modulating Triplet Excited States of Organic Semiconductors via Tuning Molecular Conformation for Dual‐ratiometric Thermometers

Chen

¹

,

Sun

²

,

Liu

³

et al. 2023

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The dual‐ratiometric thermometry is one of highly accurate methods for microscopic thermal measurement in biological systems. Herein, a series of chromone derivatives with noncovalently intramolecular interactions (NIIs) were designed and synthesized for ratiometric thermometers. The triplet states of these organic compounds were systematically tuned upon regulating the conformation with NIIs to yield efficient room temperature phosphorescence and large wavelength difference between fluorescence and phosphorescence simultaneously. As a result, an unprecedent organic 3D dual‐ratiometric thermometer was established based on the intensity ratio and lifetime ratio of fluorescence/phosphorescence vs temperature, which was used for in vitro and in vivo bio‐thermometry with high accuracy. This work provides a novel method to achieve organic dual ratiometric thermometers via tuning the triplet excited states.

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“…Generally, there have been several methods for fabricating nanophosphors, including hydrothermal synthesis, co-precipitation, combustion, pulsed laser ablation and electrospinning [20][21][22][23][24]. It was worth mentioning that electrospinning technology is a versatile method, which has the advantages in fabricating one-dimensional nanofibers or fiber-like nanocomposites [25,26]. To the best of our knowledge, although various of metal ions modified Gd 2 O 3 nanomaterials have been investigated, there has been little work on the electrospun synthesis of rare earth doped Gd 2 O 3 core-shell nanofibers and their photoluminescence.…”

Section: Introductionmentioning

confidence: 99%

Upconversion red light emission and luminescence thermometry of Gd2O3:Er3+ @Gd2O3:Yb3+ core-shell nanofibers synthesized via electrospinning

Liu¹,

Wang²,

Sun³

et al. 2023

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Gd2O3:Er3+@Gd2O3:Yb3+ core-shell nanofibers with cubic phase were successfully fabricated by electrospinning method. The structural, morphological properties were investigated by X-Ray diffraction, scanning electron microscopy. Under 980 nm excitation, the upconversion photoluminescence in visible light exhibits strong red emitting band with obvious splitting peaks resulted from stark splitting of energy level. The visible emissions are sensitive to temperature in the range of 303-543 K. The red emission displays quenching with elevation of temperature. The activation energy for thermal quenching is equal to 0.1408 eV. The temperature dependent multi-peaks of red emission were systematically investigated. Based on valley and peak ratio of I680.31nm/ I683.03nm in upconversion emission spectra, temperature sensing with constant absolute sensitivity was achieved. These results suggest Gd2O3:Er3+@Gd2O3:Yb3+ nanofibers are promising candidates for luminescence thermometry, which may provide their application values in both scientific research and industry.

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Modulating Triplet Excited States of Organic Semiconductors via Tuning Molecular Conformation for Dual‐ratiometric Thermometers

Chen

¹

,

Sun

²

,

Liu

³

et al. 2023

Angewandte Chemie

1

0

View full text Add to dashboard Cite

The dual‐ratiometric thermometry is one of highly accurate methods for microscopic thermal measurement in biological systems. Herein, a series of chromone derivatives with noncovalently intramolecular interactions (NIIs) were designed and synthesized for ratiometric thermometers. The triplet states of these organic compounds were systematically tuned upon regulating the conformation with NIIs to yield efficient room temperature phosphorescence and large wavelength difference between fluorescence and phosphorescence simultaneously. As a result, an unprecedent organic 3D dual‐ratiometric thermometer was established based on the intensity ratio and lifetime ratio of fluorescence/phosphorescence vs temperature, which was used for in vitro and in vivo bio‐thermometry with high accuracy. This work provides a novel method to achieve organic dual ratiometric thermometers via tuning the triplet excited states.

show abstract

Dual-ratiometric thermometry of Erbium(Ⅲ) in electrospun fibers inlaid with BaMgF4 microcrystals

Cited by 5 publications

References 76 publications

Modulating Triplet Excited States of Organic Semiconductors via Tuning Molecular Conformation for Dual‐ratiometric Thermometers

Modulating Triplet Excited States of Organic Semiconductors via Tuning Molecular Conformation for Dual‐ratiometric Thermometers

Upconversion red light emission and luminescence thermometry of Gd2O3:Er3+ @Gd2O3:Yb3+ core-shell nanofibers synthesized via electrospinning

Modulating Triplet Excited States of Organic Semiconductors via Tuning Molecular Conformation for Dual‐ratiometric Thermometers

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