Home
Resources
Publications
Ligand Charge Separation To Build Highly Stable Quasi-Isomer of MOF-74-Zn

Ligand Charge Separation To Build Highly Stable Quasi-Isomer of MOF-74-Zn

Huajun Yang, Fang Peng, Candy Dang, Yong Wang, Dandan Hu, Xiang Zhao, Pingyun Feng, Xianhui Bu

J Am Chem Soc. 2019 Jun 26;141(25):9808-9812.

PMID: 31199634

Abstract:

Built from an unusual high-charge-density ligand 2,5-dioxido-1,4-benzenedicarboxylate (dobdc4-), MOF-74 M (M2dobdc) have unsurpassed gas uptake and separation properties. It is thus intriguing to mimic or replicate such ligand properties in other chemical systems. Here, we show a ligand charge separation (LCS) model that could offer one pathway toward this goal. Two new materials (CPM-74 and -75, corresponding to MOF-74 and IRMOF-74-II, respectively) are presented here to illustrate this concept and its feasibility. Specifically, the dobdc4- ligand in MOF-74 can be conceptually broken down into OH- and obdc3- (H3obdc = 2-hydroxyterephthalic acid), which leads to CPM-74, Zn2(OH)(obdc), that is nearly isomeric with MOF-74-Zn. Different from MOF-74, CPM-74 is made from homohelical rod packing. Moreover, CPM-74 has high hydrothermal and thermal stability uncommon for Zn-MOFs. It contains open Zn sites on 4-coordinated Zn2+ and its isosteric heat of adsorption for CO2 is 22% higher than that of MOF-74-Zn at low pressures.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP636942	2-Hydroxyterephthalic acid		636-94-2	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: