Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Detection Methods Policy & Risk Remediation Sign in to save

Probing the stability of metal–organic frameworks by structure-responsive mass spectrometry imaging

Chemical Science 2024 6 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Yue Lin, Qian Liu, Qian Liu, Yue Lin, Ke Min, Qian Liu, Qian Liu, Qian Liu, Qian Liu, Qian Liu, Wende Ma, Qian Liu, Wende Ma, Qian Liu, Qian Liu, Qian Liu, Xuezhi Yang, Qian Liu, Xuezhi Yang, Zhenyu Lin, Guibin Jiang Xuezhi Yang, Dawei Lü, Dawei Lü, Guibin Jiang Guibin Jiang Yue Lin, Guibin Jiang Zhenyu Lin, Guibin Jiang Qian Liu, Guibin Jiang Guibin Jiang Guibin Jiang Guibin Jiang Qian Liu, Qian Liu, Guibin Jiang Qian Liu, Guibin Jiang Guibin Jiang Guibin Jiang Guibin Jiang Qian Liu, Guibin Jiang Guibin Jiang Guibin Jiang Guibin Jiang Guibin Jiang

Summary

A novel structure-responsive mass spectrometry imaging technique was developed to probe the stability of metal-organic frameworks during application, using CuBTC as a model system. The technique detected characteristic spectral changes when MOF structure was compromised, enabling non-destructive real-time monitoring of framework integrity.

The widespread application of metal-organic frameworks (MOFs) is seriously hindered by their structural instability and it is still very challenging to probe the stability of MOFs during application by current techniques. Here, we report a novel structure-responsive mass spectrometry (SRMS) imaging technique to probe the stability of MOFs. We discovered that intact CuBTC (as a model of MOFs) could generate the characteristic peaks of organic ligands and carbon cluster anions in laser desorption/ionization mass spectrometry, but these peaks were significantly changed when the structure of CuBTC was dissociated, thus enabling a label-free probing of the stability. Furthermore, SRMS can be performed in imaging mode to visualize the degradation kinetics and reveal the spatial heterogeneity of the stability of CuBTC. This technique was successfully applied in different application scenarios (in water, moist air, and CO<sub>2</sub>) and also validated with different MOFs. It thus provides a versatile new tool for better design and application of environment-sensitive materials.

Read via DOI Download PDF

Share this paper

Post Share Share Pin Email