Ratiometric fluorescent receptors for both Zn 2+ and H 2PO 4- ions based on a pyrenyl-linked triazole-modified homooxacalix[3]arene: A potential molecular traffic signal with an R-S latch logic circuit

Ni, Xin Long; Zeng, Xi; Redshaw, Carl; Yamato, Takehiko

Abstract

A ratiometric fluorescent receptor with a C 3 symmetric structure based on a pyrene-linked triazole-modified homooxacalix[3]arene (L) was synthesized and characterized. This system exhibited an interesting ratiometric detection signal output for targeting cations and anions through switching the excimer emission of pyrene from the "on-off" to the "off-on" type in neutral solution. 1H NMR titration results suggested that the Zn 2+ center of receptor L·Zn 2+ provided an excellent pathway of organizing anion binding groups for optimal host - guest interactions. It is thus believed that this receptor has potential application in sensing, detection, and recognition of both Zn 2+ and H 2PO 4- ions with different optical signals. In addition, the fluorescence emission changes by the inputs of Zn 2+ and H 2PO 4- ions can be viewed as a combinational R-S latch logic circuit at the molecular level. © 2011 American Chemical Society.

Citation

Ni, X. L., Zeng, X., Redshaw, C., & Yamato, T. (2011). Ratiometric fluorescent receptors for both Zn 2+ and H 2PO 4- ions based on a pyrenyl-linked triazole-modified homooxacalix[3]arene: A potential molecular traffic signal with an R-S latch logic circuit. Journal of Organic Chemistry, 76(14), 5696-5702. https://doi.org/10.1021/jo2007303

• Journal Article Type: Article
• Online Publication Date: Jun 17, 2011
• Publication Date: Jul 15, 2011
• Deposit Date: Jun 8, 2022
• Journal: Journal of Organic Chemistry
• Print ISSN: 0022-3263
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 76
• Issue: 14
• Pages: 5696-5702
• DOI: https://doi.org/10.1021/jo2007303
• Public URL: https://hull-repository.worktribe.com/output/3622414