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PreprintCC BYChemRxiv

Super Sensitization Near-Infrared Ln-MOF with ultra high quantum yield 19.51% as Ratiometric Temperature Sensing Platform

  • Chenxi Xie1
  • Xueying Zhou1
  • Bin Ding1
  • Xingze Wang1
  • Jing Du2,3
  • Yaqi Shen1
  • Yujie Tang1
  • Xinhui Fang1
  • Xinrui Wang1,4,5
5 affiliations
  1. 1Tianjin Key Laboratory of Structure and Performance for Functional Molecule, College of Chemistry, Tianjin Normal University, 393 Binshui West Road, Tianjin, China, 300387
  2. 2Department of Chemistry
  3. 3Institute of Molecular Aggregation Science, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University
  4. 4Yusuf Hamied Department of Chemistry
  5. 5University of Cambridge
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Abstract

： Temperature sensing plays a pivotal role in environmental, biomedical, and industrial applications. While most luminescence-based sensors operate in the visible spectrum, their effectiveness is limited in scenarios requiring deep tissue penetration or low background interference. Near-infrared (NIR) luminescence sensing address these limitations yet its development is hampered by low quantum yields and severe thermal quenching of rare-earthdoped materials. These limitations lead to sensing instability across broad temperature ranges, compromising their real-time monitoring capabilities in complex environments. In this work, we report a Yb3+/Nd3+ dual-emission rare-earth MOF integrated with Au nanoparticles to harness surface plasmon resonance (SPR) effects. By synergistically combining SPR-induced electromagnetic field enhancement with fluorinated ligands that effectively suppress vibrational quenching, the quantum yield was enhanced from 11.32% to 19.51%, enabling stable, high-sensitivity near-infrared temperature sensing across a wide operational window 2 / 39 covering 78-348 K. This strategy effectively addresses long-standing trade-offs between quantum efficiency and thermal stability, providing a generalizable platform for high-precision thermal sensing in biomedical and catalytic systems.

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Cite

BibTeXRIS
BibTeX
@misc{xie2026super,
  title = {{Super Sensitization Near-Infrared Ln-MOF with ultra high quantum yield 19.51% as Ratiometric Temperature Sensing Platform}},
  author = {Chenxi Xie and Xueying Zhou and Bin Ding and Xingze Wang and Jing Du and Yaqi Shen and Yujie Tang and Xinhui Fang and Xinrui Wang},
  howpublished = {ChemRxiv},
  year = {2026},
  month = sep,
  doi = {10.26434/chemrxiv.15009317/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009317/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Super Sensitization Near-Infrared Ln-MOF with ultra high quantum yield 19.51% as Ratiometric Temperature Sensing Platform
AU  - Chenxi Xie
AU  - Xueying Zhou
AU  - Bin Ding
AU  - Xingze Wang
AU  - Jing Du
AU  - Yaqi Shen
AU  - Yujie Tang
AU  - Xinhui Fang
AU  - Xinrui Wang
PY  - 2026
DA  - 2026/09/22
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15009317/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009317/v1
AB  - ： Temperature sensing plays a pivotal role in environmental, biomedical, and industrial applications. While most luminescence-based sensors operate in the visible spectrum, their effectiveness is limited in scenarios requiring deep tissue penetration or low background interference. Near-infrared (NIR) luminescence sensing address these limitations yet its development is hampered by low quantum yields and severe thermal quenching of rare-earthdoped materials. These limitations lead to sensing instability across broad temperature ranges, compromising their real-time monitoring capabilities in complex environments. In this work, we report a Yb3+/Nd3+ dual-emission rare-earth MOF integrated with Au nanoparticles to harness surface plasmon resonance (SPR) effects. By synergistically combining SPR-induced electromagnetic field enhancement with fluorinated ligands that effectively suppress vibrational quenching, the quantum yield was enhanced from 11.32% to 19.51%, enabling stable, high-sensitivity near-infrared temperature sensing across a wide operational window 2 / 39 covering 78-348 K. This strategy effectively addresses long-standing trade-offs between quantum efficiency and thermal stability, providing a generalizable platform for high-precision thermal sensing in biomedical and catalytic systems.
ER  -