Wide-range temperature sensing regulated by the excited-state intramolecular proton transfer in main-group metal-organic frameworks

Li, Dan; Yan, Xin; Xing, Chen-Chen; Zhang, Peng; Zhai, Quan-Guo

doi:10.1016/j.jssc.2024.124601

Cited by 2 publications

(1 citation statement)

References 51 publications

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“…Because atoms have an electron number greater than or equal to 4, except for a few elements such as Sn (tin) and Sb (antimony) in the main group of metals, the main group metals with outermost electron numbers of less than 4 are prone to losing electrons and exhibit moderate or strong electrophilicity. , In addition, metal ions with larger radii have stronger polarization and deformation abilities, forming MOFs with rich and diverse 1D, 2D, and 3D topological structures and high stability. , Some main group metal ions in the p-region contain valence electrons in the s- and p-sublayers located at the outermost layer of the electron layer, resulting in strong interactions with coordination fields, such as bismuth (Bi), tellurium, lead, tin, antimony, indium, and aluminum . As a result, they are prone to forming complexes with broadband luminescence similar to transition metal ions, and functional complexes with rich and colorful structures and special properties such as optoelectronic properties can be obtained .…”

Section: Introductionmentioning

confidence: 99%

A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S^2– and H₂S Gas with High Proton Conductivity

Ma,

Wang,

Fan

et al. 2024

ACS Appl. Mater. Interfaces

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Metal organic frameworks (MOFs) constructed with bismuth metal have not been widely reported, especially multifunctional Bi-MOFs. Therefore, developing multifunctional MOFs is of great significance due to the increasing requirements of materials. In this work, a 3D Bi-MOF (Bi-TCPE) with multifunctionality was successfully constructed, demonstrating high thermal stability, water stability, a porous structure, and strong blue fluorescence emission. We evaluated the properties of Bi-TCPE in detecting anions (S 2− , Cr 2 O 7 2− , and CrO 4 2− ) in aqueous solution, along with the rapid visual detection of H 2 S gas and proton conduction. In terms of anion detection, Bi-TCPE achieved the rapid detection of trace S 2− in aqueous solutions, while the K sv value was 1.224 × 10 4 M −1 with a limit of detection (LOD) value of 1.93 μM through titration experiments. Furthermore, Bi-TCPE could sensitively detect Cr 2 O 7 2− and CrO 4 2− , with K sv values of 1.144 × 10 4 and 1.066 × 10 4 M −1 , respectively, while LOD reached 2.07 and 2.18 μM. Subsequently, we conducted H 2 S gas detection experiments, and the results indicated that Bi-TCPE could selectively detect H 2 S gas at extremely low concentrations (2.08 ppm) and with a fast response time (<10 s). We also observed significant color changes under both UV light and sunlight. Therefore, we developed a H 2 S detection test paper for the rapid visual detection of H 2 S gas. Finally, we evaluated the proton conductivity of Bi-TCPE, and the experimental results showed that the proton conductivity of Bi-TCPE reached 4.77 × 10 −2 S•cm −1 at 98% RH and 90 °C, achieving an excellent value for unmodified and encapsulated MOFs. In addition, Bi-TCPE showed high stability in proton conduction experiments (it remained stable after 21 consecutive days of testing and 12 cycles of testing), demonstrating relatively high application value. These results indicate that Bi-TCPE is a multifunctional MOF material with great application potential.

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Section: Introductionmentioning

confidence: 99%

A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S^2– and H₂S Gas with High Proton Conductivity

Ma,

Wang,

Fan

et al. 2024

ACS Appl. Mater. Interfaces

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Mg-based metal-organic framework for the sensitive detection of N<sub>2</sub>H<sub>4</sub> based on the ESIPT mechanism

Xing,

Li,

Zhai

2024

Sci. Sin.-Chim

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Wide-range temperature sensing regulated by the excited-state intramolecular proton transfer in main-group metal-organic frameworks

Cited by 2 publications

References 51 publications

A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S^2– and H₂S Gas with High Proton Conductivity

A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S^2– and H₂S Gas with High Proton Conductivity

Mg-based metal-organic framework for the sensitive detection of N<sub>2</sub>H<sub>4</sub> based on the ESIPT mechanism

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Wide-range temperature sensing regulated by the excited-state intramolecular proton transfer in main-group metal-organic frameworks

Cited by 2 publications

References 51 publications

A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S2– and H2S Gas with High Proton Conductivity

A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S2– and H2S Gas with High Proton Conductivity

Mg-based metal-organic framework for the sensitive detection of N&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt; based on the ESIPT mechanism

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A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S^2– and H₂S Gas with High Proton Conductivity

A Highly Stable Multifunctional Bi-Based MOF for Rapid Visual Detection of S^2– and H₂S Gas with High Proton Conductivity

Mg-based metal-organic framework for the sensitive detection of N<sub>2</sub>H<sub>4</sub> based on the ESIPT mechanism