An Anionic Interpenetrated Zeolite‐Like Metal–Organic Framework Composite As a Tunable Dual‐Emission Luminescent Switch for Detecting Volatile Organic Molecules. Issue 48 (14th October 2016)

• Record Type: Journal Article
• Authors: Xie, Wei; He, Wen‐Wen; Li, Shun‐Li; Shao, Kui‐Zhan; Su, Zhong‐Min; Lan, Ya‐Qian
• Is Part Of: Chemistry. Volume 22:Issue 48(2016)
• Page Start: 17298
• Page End: 17304
• Publication Date: 2016-10-14
• Subjects: cationic dyes -- dual-emitting luminescent sensors -- metal-organic frameworks -- volatile organic molecules -- zeolites; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201603487
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: The luminescent MOF [(CH3 )2 NH2 ]2 [(Zn2 O)L]⋅5 DMF (NENU‐519, NENU=Northeast Normal University) with a zeolite BCT topology was successfully synthesized. It is a rare example of a two‐fold interpenetrated framework with a zeolite topology. NENU‐519 demonstrates the ability to selectively adsorb cationic dyes. Furthermore we developed Rh6@NENU‐519 (Rh6=Rhodamine 6G) as a dual‐emitting sensor for probing different volatile organic molecules (VOMs) due to an energy transfer between L and the dye. The composite can be used to distinguish the isomers of o‐, m‐, and p‐ xylene and ethylbenzene using the emission‐peak‐height ratios of L to the dye as detectable signals, in which the readout signals are involved in the interactions between the dye@MOF composite and the guest analytes. Moreover, Rh6@NENU‐519 can serve as a luminescent switch for the detection of different aromatic compounds, like benzene, benzene substituted with different groups, and pyridine. In other words, the Rh6@NENU‐519 composite can be used as molecular decoder of the structural information of different VOMs into recognizable luminescent signals. Hopefully this work will open a new corridor to develop luminescent guest@MOF composites as sensors for practical applications. Abstract : Dual‐emitting MOFs : The anionic luminescent MOF [(CH3 )2 NH2 ]2 [(Zn2 O)L]⋅ 5 DMF (NENU‐519, NENU=Northeast Normal University) was synthesized and is a rare example of an interpenetrated framework with a zeolite BCT topology. The dual‐emitting Rh6@NENU‐519 composite (Rh6=Rhodamine 6G) can detect volatile organic molecules and distinguishes between the isomers of o ‐, m ‐, and p ‐xylene and ethylbenzene.