Engineering Photoluminescence of Lanthanide Doped Yttrium-MOF-76 for Volatile Organic Compound Sensing DOI Open Access

O. R. Rivas,

Mariana Hamer, Héctor A. Baldoni

и другие.

Polymers, Год журнала: 2025, Номер 17(9), С. 1135 - 1135

Опубликована: Апрель 22, 2025

A set of three-dimensional metal-organic frameworks, named MOF-76, belonging to the tetragonal P4322 space group, based on [Y(BTC)(H2O)](DMF)1.1 (1,3,5-benzenetricarboxylate) doped with Eu3+, Tb3+, and Eu3+/Tb3+ were obtained under solvothermal conditions fully characterized by powder X-ray diffraction, thermal, vibrational analyses. In addition, upon UV light excitation (280 nm), all powdered samples exhibited fine 4f-4f transitions, which 5D0 → 7F2 (Eu3+) 5D4 7F5 (Tb3+) most intense ones. All photophysically analyzed determining luminescence lifetimes, their emission colors quantified calculating chromaticities color purities. Moreover, intrinsic quantum yield, radiative, non-radiative constants calculated compared establish a structure–property relationship. Specifically, Eu/Tb co-doped sample was employed monitor its hypersensitive emissions in presence small volatile organic compounds (VOCs), showing quenching or enhancement protic non-protic solvents. Furthermore, DFT calculations carried out understand energy transfer processes between sensor respective analytes. These results are promising for development solid-state lighting devices colorimetric chemical sensors specific compounds.

Язык: Английский

The Construction of Carbazole-Based Metal–Organic Frameworks as Fluorescent Probes for Picric Acid Detection DOI Creative Commons
Yufei Jia, Xin Wang,

Hechuan Li

и другие.

Chemosensors, Год журнала: 2025, Номер 13(3), С. 105 - 105

Опубликована: Март 13, 2025

Nitroaromatic-explosives (NEs) not only threaten global security but are also recognized as a highly toxic pollutant. Metal–organic framework Zn-Ms (Zn-M1, Zn-M2) were synthesized in this study via the coordination-driven self-assembly of Zn ions and carbazole-based ligand L containing an aldehyde group. They inherited excellent fluorescence performance could work fluorescent sensor for detecting picric acid (PA) at low concentrations. showed emission 450 nm exhibited higher quenching efficiency toward PA than other related NEs. The results suggest that response might be attributed to inner filter effect (IFE); Förster resonance energy transfer (FRET); possibly, photo-induced electron (PET). In addition, critical role group recognition site was corroborated using post-modification strategy.

Язык: Английский

Процитировано

0
Thiophene-functionalized triazolate metal-organic frameworks for enhanced oxygen evolution reaction: Insights from electrochemical studies and DFT calculations DOI
Limin Ma, Muhammad Imran Anwar, Faheem Abbas

и другие.

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 127, С. 447 - 461

Опубликована: Апрель 15, 2025

Язык: Английский

Процитировано

0
Engineering Photoluminescence of Lanthanide Doped Yttrium-MOF-76 for Volatile Organic Compound Sensing DOI Open Access

O. R. Rivas,

Mariana Hamer, Héctor A. Baldoni

и другие.

Polymers, Год журнала: 2025, Номер 17(9), С. 1135 - 1135

Опубликована: Апрель 22, 2025

A set of three-dimensional metal-organic frameworks, named MOF-76, belonging to the tetragonal P4322 space group, based on [Y(BTC)(H2O)](DMF)1.1 (1,3,5-benzenetricarboxylate) doped with Eu3+, Tb3+, and Eu3+/Tb3+ were obtained under solvothermal conditions fully characterized by powder X-ray diffraction, thermal, vibrational analyses. In addition, upon UV light excitation (280 nm), all powdered samples exhibited fine 4f-4f transitions, which 5D0 → 7F2 (Eu3+) 5D4 7F5 (Tb3+) most intense ones. All photophysically analyzed determining luminescence lifetimes, their emission colors quantified calculating chromaticities color purities. Moreover, intrinsic quantum yield, radiative, non-radiative constants calculated compared establish a structure–property relationship. Specifically, Eu/Tb co-doped sample was employed monitor its hypersensitive emissions in presence small volatile organic compounds (VOCs), showing quenching or enhancement protic non-protic solvents. Furthermore, DFT calculations carried out understand energy transfer processes between sensor respective analytes. These results are promising for development solid-state lighting devices colorimetric chemical sensors specific compounds.

Язык: Английский

Процитировано

0