Isomeric Nonpolar Amino Acid–Derived Metal–Organic Frameworks for Xenon/Krypton Separation
Yijun Yang·Huajun Yang·Pengfei Li·Beibei Sun·Yicheng Zha·Fang Peng·Lei Gan·Hongliang Huang·Yingying Zhang
Efficient xenon/krypton separation remains challenging due to their similar physicochemical properties. Herein, we demonstrate that ligand isomerism can be leveraged as an effective structural handle for constructing new metal-organic frameworks from readily available, low-cost amino acids. Using leucine and isoleucine-two constitutional regioisomers among proteinogenic amino acids that possess the largest nonpolar alkyl side chains-we construct a pair of zinc-based metal-organic frameworks, Zn-