A Fluoro-Chromogenic Sensor Based on Organic Molecular Framework for Cu2+ and F− in Aqueous Soluble DMSO

Abstract

The 2,2'-dinaphtholazobenzene molecular framework (P) was designed, synthesized and characterized. Its absorption and fluorescence properties revealed that P is a dual sensor for copper ions (Cu) and fluoride ions (F) in DMSO. The colorimetric activities were clearly visible by naked eye upon the addition of the two ions. Fluorescence quenching and enhancement were observed when Cu and F ions were added respectively. Density Functional Theory (DFT) calculations were carried out to provide an insight into the interaction of guest ions (Cu and F) with P, and to explain how the molecular orbitals were affected. Graphical Abstract ᅟ.

Photophysical, electrochemical, and DFT studies of the novel azacrown-bridged dinuclear ruthenium dye sensitizers for solar cells

“…Dye 1 and its bridging ligand were synthesized according to the reported method [30], while Dye 2 [23,24] and its bridging ligand were synthesized according to our previous work [36,37].…”

A facile synthesis of a novel 4-hydroxyl-3-azo coumarin based colorimetric probes for detecting Hg2+ and a fluorescence turn-off response of 3CBD to Fe3+ in aqueous environment

“…The mode of cation detection is largely based on the design of the molecular framework, normally via several interaction mechanisms, 8,42–45 which in many cases characterized by functional groups 46–50 and coordination interaction. 51–54…”

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ & Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

“…Molecular receptors have transformed the eld of supramolecular chemistry in the quest of advancing applications in analytical chemistry (1)(2)(3). Inspired by natural processes, chemical receptors play an important role in guest-host systems through weak intermolecular forces (4)(5)(6)(7)(8)(9). Intermolecular forces are the basis of many natural-occurring interactions, mostly varying from hydrogen bonding (7), π-stacking interaction (10,11), coordination bonding (12,13) and others (14).…”