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Novel metal-organic frameworks with high stability for selectively sensing nitroaromatics
Yi Liu1, Yue Zhao, Xiao-Hui Liu
1Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China. sunwy@nju.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|October 16, 2018
Summary
Two novel metal-organic frameworks (MOFs) with aldehyde groups were synthesized. One MOF demonstrates exceptional stability and high carbon dioxide adsorption capacity, suggesting potential for gas separation and sensing applications.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Metal-organic frameworks (MOFs) are crucial for various applications due to their tunable properties.
- Stability and functionality are key considerations for practical MOF utilization.
Purpose of the Study:
- To synthesize and characterize novel aldehyde-functionalized MOFs.
- To investigate the stability, gas adsorption, and luminescent properties of these new MOFs.
Main Methods:
- Solvothermal synthesis using mixed organic ligands (2,4-bis[(pyridin-4-yl)methoxy]benzaldehyde and 1,4-benzenedicarboxylic acid) and metal salts (Zinc and Cobalt).
- Structural characterization of the resulting 2-fold interpenetrated 3D frameworks.
- Assessment of water and pH stability.
- Carbon dioxide (CO2) adsorption measurements.
- Photoluminescence (PL) studies.
Main Results:
- Two new MOFs, [Zn2(L)(BDC)2]·2DMF·MeOH·H2O (1) and [Co2(L)(BDC)2]·2DMF·2MeOH·H2O (2), were successfully synthesized.
- MOF 1 exhibits excellent stability across a wide range of water conditions and pH levels.
- MOF 1 shows a high CO2 adsorption capacity (large Qst value).
- Photoluminescence studies suggest MOF 1 can act as a luminescent probe for nitroaromatic detection.
Conclusions:
- The synthesized MOFs possess robust structural integrity and desirable functional groups.
- MOF 1 shows significant promise for carbon capture technologies due to its high CO2 adsorption.
- The luminescent properties of MOF 1 open possibilities for its use in chemical sensing applications, particularly for nitroaromatics.
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