Chiral metal–organic framework coated quartz crystal microbalance for chiral discrimination. Issue 39 (31st March 2015)

• Record Type: Journal Article
• Authors: Duan, Hao-Jie; Yang, Cheng-Xiong; Yan, Xiu-Ping
• Is Part Of: RSC advances. Volume 5:Issue 39(2015)
• Page Start: 30577
• Page End: 30582
• Publication Date: 2015-03-31
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra01204j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A 3D chiral porous Zn–organic framework (Zn2 (bdc)(l -lac)(dmf)·DMF) coated quartz crystal microbalance sensor was fabricated for chiral recognition of enantiomers. Abstract : The development of novel methods for chiral discrimination remains a challenging and important area due to the structural similarity but significantly different roles of enantiomers in biological and environmental systems. Here we report a 3D chiral porous Zn–organic framework (Zn2 (bdc)(l -lac)(dmf)·DMF) coated quartz crystal microbalance (QCM) sensor for chiral discrimination of four pairs of enantiomers. The adsorption isotherms of the enantiomers on Zn2 (bdc)(l -lac)(dmf)·DMF follow the Dubinin–Astakhov equation. The QCM sensor shows excellent sensitivity and enantioselectivity. The chiral recognition ability of the Zn2 (bdc)(l -lac)(dmf)·DMF sensor was temperature and concentration dependent. The chiral selectivity factor ranged from 1.36 ( S / R -1-(1-naphthyl)ethylamine) to 2.20 ( S / R -1-phenylethylamine) at 25 °C. The good chiral recognition capacities of enantiomers provide Zn2 (bdc)(l -lac)(dmf)·DMF potential for the discrimination of enantiomers.