Related Experiment Video
Updated: Feb 28, 2026

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
Published on: January 17, 2020
Synergistic Effects in a Homochiral Metal-Organic Framework Enable Enhanced Enantiomeric Discrimination and
Zhi-Yun Dong1, Fu-Gui Xi1, Rui-Xuan Li2
1Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China.
Abstract:
The rational design of chiral interfaces that emulate the sophisticated recognition of biological systems remains a persistent challenge in sensing, demanding molecular recognition with high specificity and affinity. Progress in this area is crucial for advancing sensing capabilities, particularly in the precise quantification of biomarkers, including urinary L-cystine for human cystinuria and cellular glutathione disulfide (GSSG) for vivo oxidative stress. Herein, we report a homochiral metal-organic framework (MOF), Zn-TMTyrBa, engineered as an electrochemical sensing platform for the specific detection of L-cystine and GSSG. By leveraging synergistically integrated binding sites, this MOF achieves ultra-low detection limits (46.1 pM for L-cystine and 0.12 pM for GSSG) and unprecedented chiral selectivity between cystine enantiomers (IL/ID = 55.2; ΔE = 200 mV). The sensor demonstrates reliable quantitative capability for target analytes in complex matrices, including racemic mixtures, artificial cerebrospinal fluid, and fetal bovine serum, and has been applied to quantify L-cystine in human urine, yielding results that fall within the typical physiological range for healthy individuals. Mechanistic studies reveal that the superior performance arises from a synergy between the configurational match of the chiral microenvironment of the MOF with the target analytes and the complementary specific binding interactions of its integrated multifunctional groups with corresponding analyte moieties. This work establishes a viable strategy that utilizes multisite synergy in MOFs to significantly enhance sensing specificity, thereby providing new insights for the design of high-performance chiral sensing interfaces.
More Related Videos
12:30Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
09:37Combining Non-reducing SDS-PAGE Analysis and Chemical Crosslinking to Detect Multimeric Complexes Stabilized by Disulfide Linkages in Mammalian Cells in Culture
Published on: May 2, 2019
Related Concept Videos
Stereoisomerism
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Preparation and Reactions of Sulfides
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Prochirality
Molecules with Multiple Chiral Centers