Hetero-nuclear metal organic framework with enhanced hydrolytic stability for distinguishing between the protic and aprotic solvents and detecting water in organic solvents.

Yixuan Xu, Jiawei Tian, Fanpeng Ran, Qin Huang, Xiaoyu Wang, Junbao Ma, Xiaoyan Liu, Haixia Zhang

Abstract read

In one paragraph

Article in Mikrochimica acta, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

8 authors.

Yixuan Xu *State Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.

Jiawei Tian *State Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.

Fanpeng RanState Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.

Qin HuangState Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.

Xiaoyu WangState Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.

Junbao MaState Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.

Xiaoyan LiuState Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China. liuxiaoy@lzu.edu.cn.

Haixia ZhangState Key Laboratory of Natural Product Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000, China.

Funding

National Natural Science Foundation of China 22174058

6 · The paper itself

Abstract

A hetero-bimetallic metal–organic framework (MOF) (Zn-Cd-MOF, Zn2Cd(DMF)2(L)6}n (L = 2,5-bis(phenylamino)-1,4-benzenedicarboxylic acid), featuring a dense topology assembled through synergistic Zn2+ and Cd2+ coordination, has been synthesized via a direct solvothermal approach. Compared to its monometallic analogues (Zn-MOF or Cd-MOF), Zn-Cd-MOF exhibits significantly improved stability in water and diverse organic solvents. Moreover, this bimetallic framework displays tunable fluescence properties, enabling effective distinction between protic and aprotic solvents. This unique fluorescence response is attributed to the excited-state intramolecular proton transfer (ESIPT) process of the ligand, in which competitive hydrogen bonding with water molecules modulates the enol-keto tautomer equilibrium. The material also demonstrates excellent reusability, maintaining stable performance over at least 5 consecutive cycles for detecting water in organic solvents, and retains structural integrity for over 2 years. This study offers a new strategy for constructing stable MOFs based on low-valence metal and carboxylate ligands, while also providing a practical design concept for identifying protic solvents in aprotic environments.

Indexed as

Bimetallic metal-organic frameworksESIPTLuminescence sensingSolvent discriminationSolvent stabilityWater detection

Identifiers

PMID41649574

DOI10.1007/s00604-026-07884-0

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.